Erik Agrell

Professor at Department of Signals and Systems, Communication Systems

Erik Agrell is a Professor in Communication Systems. His research interests belong to the fields of information theory, coding theory, and digital communications. Apart from doing fundamental research in these fields, he also investigates their applications in optical communications, with the overall aim to design more efficient fiber-optical networks. He is a co-founder of the Fiber-Optic Communications Research Center (FORCE) at Chalmers, an interdisciplinary research environment where he leads the signals and systems research area.Find me: Maskingränd 2, floor 6Ö, room 6411

Source: chalmers.se

Projects

2016–2019

Polarization-aware fiber optic transmisson

Magnus Karlsson Department of Microtechnology and Nanoscience, Photonics
Erik Agrell Department of Signals and Systems, Communication Systems
Swedish Research Council (VR)

2016–2020

Coding for Optical communications In the Nonlinear regime (COIN)

Erik Agrell Department of Signals and Systems, Communication Systems
Alexandre Graell i Amat Department of Signals and Systems, Communication Systems
EC, Horizon 2020

2015–2018

Towards flexible and energi-efficient datacentre networks

Erik Agrell Department of Signals and Systems, Communication Systems
Krzysztof Szczerba Department of Microtechnology and Nanoscience, Photonics
Houman Rastegarfar Department of Signals and Systems, Communication Systems
Swedish Research Council (VR)

2015–2018

Technologies for spatial-division multiplexing: The next frontier in optical communications

Peter Andrekson Department of Microtechnology and Nanoscience, Photonics
Victor Torres Company Department of Microtechnology and Nanoscience, Photonics
Magnus Karlsson Department of Microtechnology and Nanoscience, Photonics
Arni Alfredsson Department of Signals and Systems, Communication Systems
Erik Agrell Department of Signals and Systems, Communication Systems
Swedish Research Council (VR)

2014–2019

Energy-efficient optical fibre communication

Erik Agrell Department of Signals and Systems, Communication Systems
Kevin Cushon Department of Computer Science and Engineering, Computer Engineering (Chalmers)
Christoffer Fougstedt Department of Computer Science and Engineering, Computer Engineering (Chalmers)
Lars Lundberg Department of Microtechnology and Nanoscience, Photonics
Anders Larsson Department of Microtechnology and Nanoscience, Photonics
Per Larsson-Edefors Department of Computer Science and Engineering, Computer Engineering (Chalmers)
Alexandre Graell i Amat Department of Signals and Systems, Communication Systems
Alireza Sheikh Department of Signals and Systems, Communication Systems
Magnus Karlsson Department of Microtechnology and Nanoscience, Photonics
Peter Andrekson Department of Microtechnology and Nanoscience, Photonics
Knut and Alice Wallenberg Foundation

2011–2013

Theory and algorithms for fiber-optical intensity channels

Erik Agrell Department of Signals and Systems, Communication Systems
Magnus Karlsson Department of Microtechnology and Nanoscience, Photonics
Johnny Karout Department of Signals and Systems, Communication Systems
Swedish Research Council (VR)

2010–2013

Elastic Optical Networks

Erik Agrell Department of Signals and Systems, Communication Systems
Magnus Karlsson Department of Microtechnology and Nanoscience, Photonics
VINNOVA

2014–2017

Optical Fiber Interference is Not Noise

Erik Agrell Department of Signals and Systems, Communication Systems
Magnus Karlsson Department of Microtechnology and Nanoscience, Photonics
Giuseppe Durisi Department of Signals and Systems, Communication Systems
Kamran Keykhosravi Department of Signals and Systems, Communication Systems
Swedish Research Council (VR)

2013–2016

Adaptive optical networks: Theory and algorithms for system optimization

Erik Agrell Department of Signals and Systems, Communication Systems
Henk Wymeersch Department of Signals and Systems, Communication Systems
Peter Andrekson Department of Microtechnology and Nanoscience, Photonics
Magnus Karlsson Department of Microtechnology and Nanoscience, Photonics
Li Yan Department of Signals and Systems, Communication Systems
Cristian Bogdan Czegledi Department of Signals and Systems, Communication Systems
Swedish Research Council (VR)

8 publications exist
2011–2014

Power-efficient terabit/s transmission

Peter Andrekson Department of Microtechnology and Nanoscience, Photonics
Magnus Karlsson Department of Microtechnology and Nanoscience, Photonics
Henk Wymeersch Department of Signals and Systems, Communication Systems
Erik Agrell Department of Signals and Systems, Communication Systems
Swedish Research Council (VR)

There might be more projects where Erik Agrell participates, but you have to be logged in as a Chalmers employee to see them.

Publications

2017

Optical Circuit Granularity Impact in TCP-Dominant Hybrid Data Center Networks

Houman Rastegarfar, Kamran Keykhosravi, Erik Agrell et al
International Conference on Computing, Networking and Communications (ICNC 2017)
Conference paper - peer reviewed
2017

Phase-Noise Compensation for Spatial-Division Multiplexed Transmission

Arni Alfredsson, Erik Agrell, Henk Wymeersch et al
Optical Fiber Communication Conference, OFC 2017; Los Angeles Convention Center, Los Angeles; United States; 19 March 2015 through 23 March 2017
Conference paper - peer reviewed
2016

Achievable information rates of nonbinary codes for optical fiber transmission

Gabriele Liga, Alex Alvarado, Polina Bayvel et al
IEEE Photonics Conference (IPC)
Conference paper - peer reviewed
2016

To overcome the scalability limitation of passive optical interconnects in datacentres

Rui Lin, Krzysztof Szczerba, Erik Agrell et al
Asia Communications and Photonics Conference (ACP)
Conference paper - peer reviewed
2016

Parallel improved Schnorr-Euchner enumeration SE++ on shared and distributed memory systems, with and without extreme pruning

Fábio Correia, Artur Mariano, Alberto Proença et al
Journal of Wireless Mobile Networks, Ubiquitous Computing, and Dependable Applications. Vol. 7 (4), p. 1-19
Scientific journal article - peer reviewed
2016

Pb/s, homogeneous, single-mode, multi-core fiber systems [Invited]

Benjamin J. Puttnam, Ruben S. Luís, Jun Sakaguchi et al
European Conference on Optical Communication (ECOC)
Conference paper - peer reviewed
2016

Nonlinear-Impairments- and Crosstalk-Aware Resource Allocation Schemes for Multicore-Fiber-based Flexgrid Networks

Madushanka Nishan Dharmaweera, Li Yan, Magnus Karlsson et al
ECOC 2016; 42nd European Conference on Optical Communication; Proceedings of
Conference paper - peer reviewed
2016

Joint-Polarization Phase-Noise Estimation and Symbol Detection for Optical Coherent Receivers

Arni Alfredsson, Rajet Krishnan, Erik Agrell et al
Journal of Lightwave Technology. Vol. 34 (18), p. 4394-4405
Scientific journal article - peer reviewed
2016

Multidimensional Modulation and Coding in Optical Transport

Magnus Karlsson, Erik Agrell,
Journal of Lightwave Technology. Vol. PP (99), p. 7582378
Scientific journal article - peer reviewed
2016

Information rates of next-generation long-haul optical fiber systems using coded modulation

Gabriele Liga, Alex Alvarado Segovia, Erik Agrell et al
Journal of Lightwave Technology. Vol. PP (99), p. Art. no. 7553569
Scientific journal article - peer reviewed
2016

Improved Achievable Information Rates by Optimized Four-Dimensional Demappers in Optical Transmission Experiments

T. Fehenberger, Tobias Eriksson, Alex Alvarado et al
2016 Optical Fiber Communications Conference and Exhibition (Ofc)
Conference paper - peer reviewed
2016

Multidimensional Modulation and Coding

Magnus Karlsson, Erik Agrell,
2016 Optical Fiber Communications Conference and Exhibition (Ofc)
Conference paper - peer reviewed
2016

Ultra-Wideband Nonlinearity Compensation Performance in the Presence of PMD

Gabriele Liga, Cristian Bogdan Czegledi, Tianhua Xu et al
European Conference on Optical Communication
Conference paper - peer reviewed
2016

Polarization-Mode Dispersion Aware Digital Backpropagation

Cristian Bogdan Czegledi, Gabriele Liga, Domanic Lavery et al
European Conference on Optical Communication
Conference paper - peer reviewed
2016

Roadmap of optical communications

Erik Agrell, Magnus Karlsson, A. R. Chraplyvy et al
Journal of Optics. Vol. 18 (6)
Scientific journal article - peer reviewed
2016

Parallel Improved Schnorr-Euchner Enumeration SE++ for the CVP and SVP

Fabio Correia, Artur Mariano, Alberto Proenca et al
24th Euromicro International Conference on Parallel, Distributed, and Network-Based Processing, PDP 2016, Heraklion, Crete, Greece, 17-19 February 2016, p. 596-603
Conference paper - peer reviewed
2016

Sensitivity Comparison of Time Domain Hybrid Modulation and Rate Adaptive Coding

Li Yan, Erik Agrell, Henk Wymeersch et al
Optical fiber communication conference, 2016, p. W1l-3
Conference paper - peer reviewed
2016

On the Information Loss of the Max-Log Approximation in BICM Systems

Mikhail Ivanov, Christian Häger, Fredrik Brännström et al
IEEE Transactions on Information Theory. Vol. 62 (6), p. 3011 - 3025
Scientific journal article - peer reviewed
2016

Modulation Format Independent Joint Polarization and Phase Tracking for Coherent Receivers

Cristian Bogdan Czegledi, Erik Agrell, Magnus Karlsson et al
Journal of Lightwave Technology. Vol. 13 (14), p. 3354-3364
Scientific journal article - peer reviewed
2016

Cn. 2. Multidimensional Optimized Optical Modulation Formats

Magnus Karlsson, Erik Agrell,
Enabling Technologies for High Spectral-efficiency Coherent Optical Communication Networks, Ch. 2, p. 13-64
Chapter in monograph, book
2016

Corrections to "Replacing the soft-decision FEC limit paradigm in the design of optical communication systems"

A. Alvarado, Erik Agrell, D. Lavery et al
Journal of Lightwave Technology. Vol. 34 (2), p. 722
Scientific journal article - peer reviewed
2016

Regenerator site selection in impairment-aware elastic optical networks

Madushanka Nishan Dharmaweera, Li Yan, Magnus Karlsson et al
2016 Optical Fiber Communications Conference and Exhibition (OFC). Anaheim, CA, MAR 20-24, 2016
Conference paper - peer reviewed
2016

A Deterministic Construction and Density Evolution Analysis for Generalized Product Codes

Christian Häger, Henry D. Pfister, Alexandre Graell i Amat et al
Proc. Int. Zurich Seminar on Communications (IZS)
Conference paper - non peer reviewed
2016

Multidimensional modulation formats for coherent optical communications

Tobias Eriksson, Erik Agrell, Magnus Karlsson et al
Conference on Next-Generation Optical Communication - Components, Sub-Systems, and Systems V, San Francisco, CA, Feb 16-18, 2016 (977403)
Conference paper - non peer reviewed
2016

Replacing the Soft-Decision FEC Limit Paradigm in the Design of Optical Communication Systems

A. Alvarado, Erik Agrell, D. Laver et al
Journal of Lightwave Technology. Vol. 34 (2), p. 707-721
Scientific journal article - peer reviewed
2016

Impact of 4D Channel Distribution on the Achievable Rates in Coherent Optical Communication Experiments

Tobias Eriksson, Tobias Fehenberger, Peter Andrekson et al
Journal of Lightwave Technology. Vol. 34 (9), p. 2256-2266
Scientific journal article - peer reviewed
2016

Polarization Drift Channel Model for Coherent Fibre-Optic Systems

Cristian Bogdan Czegledi, Magnus Karlsson, Erik Agrell et al
Scientific Reports. Vol. 6, p. 21217
Scientific journal article - peer reviewed
2016

Implications of information theory in optical fibre communications

Erik Agrell, A. Alvarado, F. R. Kschischang et al
Philosophical Transactions of the Royal Society a-Mathematical Physical and Engineering Sciences. Vol. 374 (2062)
Scientific journal article - peer reviewed
2016

Traffic-grooming- and multipath-routing-enabled impairment-aware elastic optical networks

Madushanka Nishan Dharmaweera, Li Yan, Magnus Karlsson et al
Journal of Optical Communications and Networking. Vol. 8 (2), p. 58-70
Scientific journal article - peer reviewed
2016

Stochastic Digital Backpropagation with Residual Memory Compensation

Naga VishnuKanth Irukulapati, Domenico Marsella, Pontus Johannisson et al
Journal of Lightwave Technology. Vol. 34 (2), p. 566-572
Scientific journal article - peer reviewed
2015

Optimum detection in presence of nonlinear distortions with memory

Gabriele Liga, Alex Alvarado, Erik Agrell et al
41st European Conference on Optical Communication, ECOC 2015, Valencia, Spain, 27 September - 1 October 2015
Conference paper - peer reviewed
2015

Experimental investigation of a 16-dimensional modulation format for long-haul multi-core fiber transmission

Georg Rademacher, Benjamin J. Puttnam, Ruben S. Luís et al
41st European Conference on Optical Communication, ECOC 2015, Valencia, Spain, 27 September - 1 October 2015
Conference paper - peer reviewed
2015

Linear block-coding across >5 Tb/s PDM-64QAM spatial-super-channels in a 19-core fiber

Benjamin J. Puttnam, Ruben S. Luís, José-M. Delgado Mendinueta et al
41st European Conference on Optical Communication, ECOC 2015, Valencia, Spain, 27 September - 1 October 2015
Conference paper - peer reviewed
2015

Nonlinear Impairment-Aware Static Resource Allocation in Elastic Optical Networks

Juzi Zhao, Henk Wymeersch, Erik Agrell et al
Journal of Lightwave Technology. Vol. 33 (22), p. 4554-4564
Scientific journal article - non peer reviewed
2015

LDPC codes for optical channels: Is the "FEC limit" a good predictor of post-FEC BER?

Alex Alvarado, Erik Agrell, Domaniç Lavery et al
2015 Optical Fiber Communications Conference and Exhibition, (OFC) 2015, Los Angeles, United States, 22-26 March 2015, p. 7121706
Conference paper - peer reviewed
2015

A simple strategy for mitigating XPM in nonlinear WDM optical systems

D. Marsella, M. Secondini, Erik Agrell et al
2015 Optical Fiber Communications Conference and Exhibition, OFC 2015, Los Angeles, United States, 22-26 March 2015
Conference paper - peer reviewed
2015

Nonlinear impairment aware resource allocation in elastic optical networks

Juzi Zhao, Henk Wymeersch, Erik Agrell et al
2015 Optical Fiber Communications Conference and Exhibition, OFC 2015; Los Angeles; United States; 22 March 2015 through 26 March 2015. Vol. June 2015 (7121502)
Conference paper - peer reviewed
2015

Power Consumption of Hybrid EDFA/Raman Amplified Systems

Lars Lundberg, Pontus Johannisson, Erik Agrell et al
41st European Conference on Optical Communication, ECOC 2015, Valencia, Spain, 27 September 2015 - 1 October 2015
Conference paper - peer reviewed
2015

Resource Allocation for Flexible-Grid Optical Networks With Nonlinear Channel Model

Li Yan, Erik Agrell, Henk Wymeersch et al
Journal of Optical Communications and Networking. Vol. 7 (11), p. B101-B108
Scientific journal article - peer reviewed
2015

Backward particle message passing

Henk Wymeersch, Naga VishnuKanth Irukulapati, Isaac A. Sackey et al
16th IEEE International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2015; KTH Royal Institute of TechnologyStockholm; Sweden; 28 June 2015 through 1 July 2015, p. 450-454
Conference paper - peer reviewed
2015

On the Use of Factor Graphs in Optical Communications

Henk Wymeersch, Naga VishnuKanth Irukulapati, Domenico Marsella et al
2015 Optical Fiber Communications Conference and Exhibition, OFC 2015; Los Angeles; United States; 22 March - 26 March 2015. Vol. 2015-June (7122132)
Conference paper - peer reviewed
2015

Code Rate Optimization in Elastic Optical Networks

Juzi Zhao, Li Yan, Erik Agrell et al
41st European Conference on Optical Communication, ECOC 2015, Valencia, Spain, 27 September - 1 October 2015
Conference paper - peer reviewed
2015

Power Optimization in Nonlinear Flexible-Grid Optical Networks

Li Yan, Juzi Zhao, Erik Agrell et al
41st European Conference on Optical Communication, ECOC 2015, Valencia, Spain, 27 September - 1 October 2015
Conference paper - peer reviewed
2015

Four-Dimensional Estimates of Mutual Information in Coherent Optical Communication Experiments

Tobias Eriksson, Tobias Fehenberger, Norbert Hanik et al
European Conference on Optical Communications (ECOC), Valencia, Spain, 27 September - 1 October 2015
Conference paper - peer reviewed
2015

Replacing the Soft-Decision FEC Limit Paradigm in the Design of Optical Communication Systems

A. Alvarado, Erik Agrell, D. Lavery et al
Journal of Lightwave Technology. Vol. 33 (20), p. 4338-4352
Scientific journal article - peer reviewed
2015

Coherent transmission channels as 4d rotations

Magnus Karlsson, Cristian Bogdan Czegledi, Erik Agrell et al
Signal Processing in Photonic Communications, SPPCom 2015; Omni Parker HouseBoston; United States; 27 June 2015 through 1 July 2015, p. SpM3E.2
Conference paper - peer reviewed
2015

Influence of Behavioral Models on Multiuser Channel Capacity

Erik Agrell, Magnus Karlsson,
Journal of Lightwave Technology. Vol. 33 (17), p. 3507-3515
Scientific journal article - peer reviewed
2015

Information-theory-friendly models for fiber-optic channels: A primer

Erik Agrell, Giuseppe Durisi, Pontus Johannisson et al
IEEE Information Theory Workshop (ITW), Jerusalem, Israel [Invited]
Conference paper - peer reviewed
2015

Four-Dimensional Coded Modulation with Bit-Wise Decoders for Future Optical Communications

Alex Alvarado, Erik Agrell,
Journal of Lightwave Technology. Vol. 33 (10), p. 1993-2003
Scientific journal article - peer reviewed
2015

Single parity check-coded 16QAM over spatial superchannels in multicore fiber transmission

Tobias Eriksson, R. S. Luis, B. J. Puttnam et al
Optics Express. Vol. 23 (11), p. 14569-14582
Scientific journal article - peer reviewed
2015

Link-Level Resource Allocation for Flexible-Grid Nonlinear Fiber-Optic Communication Systems

Li Yan, Erik Agrell, Henk Wymeersch et al
IEEE Photonics Technology Letters. Vol. 27 (12), p. 1250-1253
Scientific journal article - peer reviewed
2015

Experimental Investigation of a Four-Dimensional 256-ary Lattice-based Modulation Format

Tobias Eriksson, Saleem Alreesh, Carsten Schmidt-Langhorst et al
2015 Optical Fiber Communications Conference and Exhibition, OFC 2015, Los Angeles, United States, 22-26 March 2015, p. 7122133
Conference paper - peer reviewed
2015

Spatially-Coupled Codes for Optical Communications: State-of-the-Art and Open Problems

Alexandre Graell i Amat, Christian Häger, Fredrik Brännström et al
20th OptoElectronics and Communications Conference, OECC 2015, p. Art. no. 7340116
Conference paper - peer reviewed
2015

Conditions for a Monotonic Channel Capacity

Erik Agrell,
Ieee Transactions on Communications. Vol. 63 (3), p. 738-748
Scientific journal article - peer reviewed
2015

Resource Allocation in Nonlinear Flexible-Grid Fiber-Optic Networks

Li Yan, Henk Wymeersch, Erik Agrell et al
2015 Optical Fiber Communications Conference and Exhibition, OFC 2015; Los Angeles; United States; 22-26 March 2015, p. 7121834
Conference paper - peer reviewed
2015

Terminated and Tailbiting Spatially-Coupled Codes with Optimized Bit Mappings for Spectrally Efficient Fiber-Optical Systems

Christian Häger, Alexandre Graell i Amat, Fredrik Brännström et al
Journal of Lightwave Technology. Vol. 33 (7), p. 1275-1285
Scientific journal article - peer reviewed
2015

On Parameter Optimization for Staircase Codes

Christian Häger, Alexandre Graell i Amat, Henry D. Pfister et al
Proc. Optical Fiber Communication Conference and Exposition (OFC)
Conference paper - peer reviewed
2015

Symbol-by-Symbol Joint Polarization and Phase Tracking in Coherent Receivers

Cristian Bogdan Czegledi, Erik Agrell, Magnus Karlsson et al
Optical Fiber Communication Conference, OFC 2015; Los Angeles Convention CenterLos Angeles; United States; 22 March 2015 through 26 March 2015
Conference paper - peer reviewed
2014

Sensing or Transmission: Causal Cognitive Radio Strategies with Censorship

Kasra Haghighi, Erik G. Ström, Erik Agrell et al
IEEE Transactions on Wireless Communications. Vol. 13 (6), p. 3031-3041
Scientific journal article - peer reviewed
2014

Modulation formats for multi-core fiber transmission

B.J. Puttnam, Tobias Eriksson, J.M. Delgado Mendinueta et al
Optics Express. Vol. 22 (26), p. 32457-32469
Scientific journal article - peer reviewed
2014

Capacity of a nonlinear optical channel with finite memory

Erik Agrell, Alex Alvarado, Giuseppe Durisi et al
Journal of Lightwave Technology. Vol. 32 (16), p. 2862-2876
Scientific journal article - peer reviewed
2014

Experimental comparison of PS-QPSK and LDPC-coded PM-QPSK with equal spectral efficiency in WDM transmission

Tobias Eriksson, Pontus Johannisson, Erik Agrell et al
2014 European Conference on Optical Communication, ECOC 2014; Cannes; France; 21 September 2014 through 25 September 2014, p. Art. no. 6964035
Conference paper - peer reviewed
2014

Single parity check multi-core modulation for power efficient spatial super-channels

B.J. Puttnam, J.M.D. Mendinueta, R.S. Luís et al
2014 European Conference on Optical Communication, ECOC 2014; Cannes; France; 21 September 2014 through 25 September 2014, p. Art. no. 6964197
Conference paper - peer reviewed
2014

Stochastic Digital Backpropagation

Naga VishnuKanth Irukulapati, Henk Wymeersch, Pontus Johannisson et al
IEEE Transactions on Communications. Vol. 62 (11), p. 3956-3968
Scientific journal article - peer reviewed
2014

Modeling of Nonlinear Signal Distortion in Fiber-Optic Networks

Pontus Johannisson, Erik Agrell,
Journal of Lightwave Technology. Vol. 32 (23), p. 3942-3950
Scientific journal article - peer reviewed
2014

Energy efficient modulation formats for multi-core fibers

B.J. Puttnam, J.-M. Delgado Mendinueta, R.S. Luís et al
19th OptoElectronics and Communications Conference, OECC 2014 and the 39th Australian Conference on Optical Fibre Technology, ACOFT 2014; Melbourne, VIC; Australia; 6 - 10 Jul. 2014, p. 694-696
Conference paper - peer reviewed
2014

Bandlimited Power-Efficient Signaling and Pulse Design for Intensity Modulation

Cristian Bogdan Czegledi, Mohammad Reza Khanzadi, Erik Agrell et al
IEEE Transactions on Communications. Vol. 62 (9), p. 3274-3284
Scientific journal article - peer reviewed
2014

Bandlimited Power-Efficient Signaling for Intensity Modulation

Cristian Bogdan Czegledi, Mohammad Reza Khanzadi, Erik Agrell et al
European Conference on Optical Communication, ECOC 2014; Cannes; France; 21 September 2014 through 25 September 2014, p. Art. no. 6963983
Conference paper - peer reviewed
2014

K-Over-L Multidimensional Position Modulation

Tobias Eriksson, Pontus Johannisson, B. J. Puttnam et al
Journal of Lightwave Technology. Vol. 32 (12), p. 2254-2262
Scientific journal article - peer reviewed
2014

On Maximum Likelihood Sequence Detectors for Single-channel Coherent Optical Communications

Naga VishnuKanth Irukulapati, Domenico Marsella, Pontus Johannisson et al
2014 European Conference on Optical Communication, ECOC 2014; Cannes; France; 21 September 2014 through 25 September 2014, p. Art. no. 6964134
Conference paper - peer reviewed
2014

A Simple Approximation for the Bit-Interleaved Coded Modulation Capacity

A. Alvarado, Fredrik Brännström, Erik Agrell et al
Ieee Communications Letters. Vol. 18 (3), p. 495-498
Scientific journal article - peer reviewed
2014

Comparison of Terminated and Tailbiting Spatially Coupled LDPC Codes With Optimized Bit Mapping for PM-64-QAM

Christian Häger, Alexandre Graell i Amat, Fredrik Brännström et al
2014 European Conference on Optical Communication, ECOC 2014; Cannes; France; 21 September 2014 through 25 September 2014, p. Art. no. 6964047
Conference paper - peer reviewed
2014

Improving soft FEC performance for higher-order modulations via optimized bit channel mappings

Christian Häger, Alexandre Graell i Amat, Fredrik Brännström et al
Optics Express. Vol. 22 (12), p. 14544-14558
Scientific journal article - peer reviewed
2014

On the Asymptotic Performance of Bit-Wise Decoders for Coded Modulation

Mikhail Ivanov, Alex Alvarado, Fredrik Brännström et al
IEEE Transactions on Information Theory. Vol. 60 (5), p. 2796-2804
Scientific journal article - peer reviewed
2014

Achievable rates for four-dimensional coded modulation with a bit-wise receiver

A. Alvarado, Erik Agrell,
Technical Digest Series: Optical Fiber Communication Conference, OFC 2014; San Francisco, CA; United States; 9 March 2014 through 13 March 2014, p. paper M2C.1.
Conference paper - peer reviewed
2014

Biorthogonal modulation in 8 dimensions experimentally implemented as 2PPM-PS-QPSK

Tobias Eriksson, Pontus Johannisson, Erik Agrell et al
Technical Digest Series: Optical Fiber Communication Conference, OFC 2014; San Francisco, CA; United States; 9 March 2014 through 13 March 2014, p. Art. no. 6886984
Conference paper - peer reviewed
2014

Optimized Bit Mappings for Spatially Coupled LDPC Codes over Parallel Binary Erasure Channels

Christian Häger, Alexandre Graell i Amat, Alex Alvarado et al
Proc. 1st IEEE International Conference on Communications (ICC), p. 2064-2069
Conference paper - peer reviewed
2014

High-SNR Asymptotics of Mutual Information for Discrete Constellations With Applications to BICM

A. Alvarado, Fredrik Brännström, Erik Agrell et al
Ieee Transactions on Information Theory. Vol. 60 (2), p. 1061-1076
Scientific journal article - peer reviewed
2014

A Low-Complexity Detector for Memoryless Polarization-Multiplexed Fiber-Optical Channels

Christian Häger, Lotfollah Beygi, Erik Agrell et al
IEEE Communications Letters. Vol. 18 (2), p. 368-371
Scientific journal article - peer reviewed
2014

Coded Modulation for Fiber-Optic Networks

Lotfollah Beygi, Erik Agrell, J. M. Kahn et al
IEEE signal processing magazine
Scientific journal article - peer reviewed
2014

Rate-Adaptive Coded Modulation for Fiber-Optic Communications

Lotfollah Beygi, Erik Agrell, J. M. Kahn et al
Journal of Lightwave Technology. Vol. 32 (2), p. 333-343
Scientific journal article - peer reviewed
2013

35.2 Gbps 8-PAM transmission over 100 m of MMF using an 850 nm VCSEL

Krzysztof Szczerba, Magnus Karlsson, Peter Andrekson et al
Proc. European Conference on Optical Communication (ECOC)
Conference paper - peer reviewed
2013

Frequency and polarization switched QPSK

Tobias Eriksson, Pontus Johannisson, Martin Sjödin et al
39th European Conference and Exhibition on Optical Communication, ECOC 2013; London; United Kingdom; 22 September 2013 through 26 September 2013 (622 CP), p. 816-818
Conference paper - peer reviewed
2013

Comparison of Intersymbol Interference Power Penalties for OOK and 4-PAM in Short-Range Optical Links

Krzysztof Szczerba, Petter Westbergh, Erik Agrell et al
Journal of Lightwave Technology. Vol. 31 (22), p. 3525-3534
Scientific journal article - peer reviewed
2013

Nonlinear fiber capacity

Erik Agrell,
39th European Conference and Exhibition on Optical Communication, ECOC 2013; London; United Kingdom; 22 September 2013 through 26 September 2013 (622 CP), p. 630-632
Conference paper - peer reviewed
2013

WDM channel capacity and its dependence on multichannel adaptation models

Erik Agrell, Magnus Karlsson,
2013 Optical Fiber Communication Conference and Exposition and the National Fiber Optic Engineers Conference, OFC/NFOEC [Invited]
Conference paper - peer reviewed
2013

Extending Digital Backpropagation to Account for Noise

Naga VishnuKanth Irukulapati, Henk Wymeersch, Pontus Johannisson et al
Proc. of 39th European Conference and Exhibition on Optical Communication (ECOC 2013), p. We.3.C.4
Conference paper - peer reviewed
2013

On nonlinearly-induced noise in single-channel optical links with digital backpropagation

Lotfollah Beygi, Naga VishnuKanth Irukulapati, Erik Agrell et al
Optics Express. Vol. 21 (22), p. 26376-26386
Scientific journal article - peer reviewed
2013

Methodology for Power-Aware Coherent Receiver Design

Tauseef Ahmad, Yun Ai, Pavithra Muralidharan et al
Advanced Photonics Congress (SPPCom) 2013, p. SPT4D.4
Conference paper - peer reviewed
2013

MCRB for Timing and Phase Offset for Low-Rate Optical Communication with Self-Phase Modulation

Debarati Sen, Henk Wymeersch, Naga VishnuKanth Irukulapati et al
Ieee Communications Letters. Vol. 17 (5), p. 1004-1007
Scientific journal article - peer reviewed
2013

Subset-Optimized Polarization-Multiplexed PSK for Fiber-Optic Communications

Martin Sjödin, Erik Agrell, Magnus Karlsson et al
Ieee Communications Letters. Vol. 17 (5), p. 838-840
Scientific journal article - peer reviewed
2013

On Optimal TCM Encoders

Alex Alvarado, Alexandre Graell i Amat, Fredrik Brännström et al
IEEE Transactions on Communications. Vol. 61 (6), p. 2178 - 2189
Scientific journal article - peer reviewed
2013

Design of APSK Constellations for Coherent Optical Channels with Nonlinear Phase Noise

Christian Häger, Alexandre Graell i Amat, Alex Alvarado et al
IEEE Transactions on Communications. Vol. 61 (8), p. 3362-3373
Scientific journal article - peer reviewed
2013

High-SNR Asymptotics of Mutual Information for Discrete Constellations

Alex Alvarado, Fredrik Brännström, Erik Agrell et al
IEEE International Symposium on Information Theory (ISIT) 2013, Istanbul, Turkey, p. 2274-2278
Conference paper - peer reviewed
2013

Signal Shaping for BICM at Low SNR

Erik Agrell, Alex Alvarado,
IEEE Transactions on Information Theory. Vol. 59 (4), p. 2396-2410
Scientific journal article - peer reviewed
2013

Experimental Demonstration of an Optimized 16-ary Four-Dimensional Modulation Format Using Optical OFDM

Johnny Karout, Xiang Liu, S Chandrasekhar et al
Optical Fiber Communication Conference, OCF 13, p. OW3B.4
Conference paper - peer reviewed
2013

On the Exact BER of Bit-Wise Demodulators for One-Dimensional Constellations

Mikhail Ivanov, Fredrik Brännström, Alex Alvarado et al
IEEE Transactions on Communications. Vol. 61 (4), p. 1450-1459
Scientific journal article - peer reviewed
2012

Modulation method and apparatus for amplitude- or intensity-modulated communication systems

Johnny Karout, Gerhard Kramer, Frank R. Kschischang et al
Patent application
2012

Optimized lattice-based 16-level subcarrier modulation for IM/DD systems

Krzysztof Szczerba, Johnny Karout, Magnus Karlsson et al
2012 38th European Conference and Exhibition on Optical Communications, ECOC 2012; Amsterdam; Netherlands; 16 September 2012 through 20 September 2012, p. Art. no. 6705904
Conference paper - peer reviewed
2012

4-PAM for high-speed short-range optical communications

Krzysztof Szczerba, Petter Westbergh, Johnny Karout et al
Journal of Optical Communications and Networking. Vol. 4 (11), p. 885-894
Scientific journal article - peer reviewed
2012

Satellite constellations: Towards the nonlinear channel capacity

Erik Agrell, Magnus Karlsson,
25th IEEE Photonics Conference, IPC 2012, Burlingame, 23 - 27 September 2012 [Invited], p. 316-317
Conference paper - peer reviewed
2012

Bandlimited Intensity Modulation

M. Tavan, Erik Agrell, Johnny Karout et al
IEEE Transactions on Communications. Vol. 60 (11), p. 3429-3439
Scientific journal article - peer reviewed
2012

Adaptive Coded Modulation for Nonlinear Fiber-Optical Channels

Lotfollah Beygi, Erik Agrell, Magnus Karlsson et al
2012 IEEE Globecom Workshops, Anaheim, USA, 3-7 December 2012, p. 331-335
Conference paper - peer reviewed
2012

A Two-Dimensional Signal Space for Intensity-Modulated Channels

Johnny Karout, G. Kramer, F. R. Kschischang et al
IEEE Communications Letters. Vol. 16 (9), p. 1361-1364
Scientific journal article - peer reviewed
2012

General BER Expression for One-Dimensional Constellations

Mikhail Ivanov, Fredrik Brännström, Alex Alvarado et al
IEEE Global Telecommunications Conference (GLOBECOM)
Conference paper - peer reviewed
2012

Constellation Optimization for Coherent Optical Channels Distorted by Nonlinear Phase Noise

Christian Häger, Alexandre Graell i Amat, Alex Alvarado et al
Proc. IEEE Global Communications Conference (GLOBECOM) 2012, p. 2870-2875
Conference paper - peer reviewed
2012

Modified Cramer-Rao Bound for Clock Recovery in the Presence of Self-Phase Modulation

Ahmet Serdar Tan, Henk Wymeersch, Pontus Johannisson et al
Journal of Lightwave Technology. Vol. 30 (16), p. 2556-2562
Scientific journal article - non peer reviewed
2012

The Limits of Digital Backpropagation in Nonlinear Coherent Fiber-Optical Links

Lotfollah Beygi, Erik Agrell, Pontus Johannisson et al
2012 38th European Conference and Exhibition on Optical Communications, ECOC 2012; Amsterdam; Netherlands; 16 September 2012 through 20 September 2012, p. Art. no. 6706029
Conference paper - peer reviewed
2012

A Discrete-Time Model for Uncompensated Single-Channel Fiber-Optical Links

Lotfollah Beygi, Erik Agrell, Pontus Johannisson et al
IEEE Transactions on Communications. Vol. 60 (11), p. 3440-3450
Scientific journal article - peer reviewed
2012

Spectrally efficient four-dimensional modulation

Magnus Karlsson, Erik Agrell,
2012 Optical Fiber Communication Conference and Exposition and the National Fiber Optic Engineers Conference (OFC/NFOEC), Los Angeles, CA, Mar. 4 - 8 [Invited], p. Art. no. 6192053
Conference paper - peer reviewed
2012

Asymptotically optimal trellis coded modulation systems

Alexandre Graell i Amat, Alex Alvarado, Fredrik Brännström et al
Information Theory and Applications Workshop (ITA) 2012, San Diego, CA [Invited]
Conference paper - non peer reviewed
2012

Continuous-Amplitude Modulation for Optical Wireless Channels

Johnny Karout, Gerhard Kramer, Frank R. Kschischang et al
Proc. IEEE Photonics Society Summer Topical Meetings, PSST 2012, Seattle, WA: 9 through11 July 2012 (Article number 6280801), p. 167-168
Conference paper - peer reviewed
2012

First-order asymptotics of the BICM mutual information: Uniform vs. nonuniform distributions

Erik Agrell, Alex Alvarado,
Information Theory and Applications Workshop (ITA) 2012, San Diego, CA [Invited], p. 306 - 310
Conference paper - peer reviewed
2012

Achieving the Shannon Limit with Probabilistically Shaped BICM

Erik Agrell, Alex Alvarado,
2012 IEEE International Symposium on Information Theory, ISIT 2012. Cambridge, MA, 1- 6 July 2012, p. 2421-2425
Conference paper - peer reviewed
2012

On the Equivalence of TCM Encoders

Alex Alvarado, Alexandre Graell i Amat, Fredrik Brännström et al
2012 IEEE International Symposium on Information Theory, ISIT 2012. Cambridge, MA, 1 - 6 July 2012, p. 2401-2405
Conference paper - peer reviewed
2012

Comparison of 128-SP-QAM with PM-16-QAM

Martin Sjödin, Pontus Johannisson, Jianqiang Li et al
Optics Express. Vol. 20 (8), p. 8356-8366
Scientific journal article - peer reviewed
2012

On Optimum Causal Cognitive Spectrum Reutilization Strategy

Kasra Haghighi, Erik G. Ström, Erik Agrell et al
IEEE Journal on Selected Areas in Communication. Vol. 30 (10), p. 1911-1921
Scientific journal article - peer reviewed
2012

Optimizing Constellations for Single-Subcarrier Intensity-Modulated Optical Systems

Johnny Karout, Erik Agrell, Krzysztof Szczerba et al
IEEE Transactions on Information Theory. Vol. 58 (7), p. 4645-4659
Scientific journal article - peer reviewed
2011

Generalized pulse-position modulation for optical power-efficient communication

Magnus Karlsson, Erik Agrell,
37th European Conference on Optical Communication and Exhibition, ECOC 2011, Geneva, 18 September 2011 through 22 September 2011
Conference paper - peer reviewed
2011

Multilevel pulse-position modulation for optical power-efficient communication

Magnus Karlsson, Erik Agrell,
Optics Express. Vol. 19 (26), p. B799-B804
Scientific journal article - peer reviewed
2011

30 Gbps 4-PAM transmission over 200m of MMF using an 850 nm VCSEL

Krzysztof Szczerba, Petter Westbergh, Johnny Karout et al
Optics Express. Vol. 19 (26), p. B203-B208
Scientific journal article - peer reviewed
2011

Performance Comparison of Differential 8-Ary Modulation Formats in High-Speed Optical Transmission Systems

Ekawit Tipsuwannakul, Pontus Johannisson, Mats Sköld et al
Journal of Lightwave Technology. Vol. 29 (19), p. 2954-2962
Scientific journal article - peer reviewed
2011

Strictly Bandlimited ISI-Free Transmission Over Intensity-Modulated Channels

Mehrnaz Tavan, Erik Agrell, Johnny Karout et al
IEEE Global Communications Conference, Houston, TX, DEC 05-09, 2011
Conference paper - peer reviewed
2011

Designing Power-Efficient Modulation Formats for Noncoherent Optical Systems

Johnny Karout, Erik Agrell, Krzysztof Szczerba et al
54th Annual IEEE Global Telecommunications Conference (GLOBECOM), Houston, TX, DEC 05-09, 2011
Conference paper - peer reviewed
2011

An LLR-based Cognitive Transmission Strategy for Higher Spectrum Reutilization

Kasra Haghighi, Erik G. Ström, Erik Agrell et al
IEEE GLOBECOM 2011 - Cognitive Radio and Networks Symposium
Conference paper - peer reviewed
2011

High SNR Bounds for the BICM Capacity

Alex Alvarado, Fredrik Brännström, Erik Agrell et al
IEEE Information Theory Workshop ITW 2011, Paraty, Brazil, p. 360-364
Conference paper - peer reviewed
2011

On BICM receivers for TCM transmission

Alex Alvarado, Leszek Szczecinski, Erik Agrell et al
IEEE Transactions on Communications. Vol. 59 (10), p. 2692-2702
Scientific journal article - peer reviewed
2011

Optimal Alphabets and Binary Labelings for BICM at Low SNR

Erik Agrell, Alex Alvarado,
IEEE Transactions on Information Theory. Vol. 57 (10), p. 6650-6672
Scientific journal article - peer reviewed
2011

Demonstration of 8-level subcarrier modulation sensitivity improvement in an IM/DD system

Krzysztof Szczerba, Johnny Karout, Erik Agrell et al
European Conference and Exposition on Optical Communications, ECOC 2011; Geneva; Switzerland; 18 September 2011 through 22 September 2011
Conference paper - peer reviewed
2011

Stochastic Backpropagation for Coherent Optical Communications

Nan Jiang, Yan Gong, Johnny Karout et al
European Conference and Exposition on Optical Communications, ECOC 2011; Geneva; Switzerland; 18 September 2011 through 22 September 2011
Conference paper - peer reviewed
2011

30 Gbps 4-PAM transmission over 200m of MMF using an 850 nm VCSEL

Krzysztof Szczerba, Petter Westbergh, Johan S. Gustavsson et al
2011 37th European Conference on Optical Communication (ECOC); 18-22 Sept. 2011; Geneva, p. 1-3
Conference paper - peer reviewed
2011

Faster Recursions in Sphere Decoding

Arash Ghasemmehdi, Erik Agrell,
IEEE Transactions on Information Theory. Vol. 57 (6), p. 3530-3536
Scientific journal article - peer reviewed
2011

Signal Statistics in Fiber-Optical Channels with Polarization Multiplexing and Self-Phase Modulation

Lotfollah Beygi, Erik Agrell, Magnus Karlsson et al
IEEE Journal of Lightwave Technology. Vol. 29 (16), p. 2379 - 2386
Scientific journal article - peer reviewed
2011

Convergence Comparison of the CMA and ICA for Blind Polarization Demultiplexing

Pontus Johannisson, Henk Wymeersch, Martin Sjödin et al
Journal of Optical Communications and Networking. Vol. 3 (6), p. 493-501
Scientific journal article - peer reviewed
2011

Experimental comparison of modulation formats in IM/DD links

Krzysztof Szczerba, Johnny Karout, Petter Westbergh et al
Optics Express. Vol. 19 (10), p. 9881-9889
Scientific journal article - peer reviewed
2011

An ML-based Detector for Optical Communication in the Presence of Nonlinear Phase Noise

Ahmet Serdar Tan, Henk Wymeersch, Pontus Johannisson et al
2011 IEEE International Conference on Communications, ICC 2011; Kyoto; Japan; 5 June 2011 through 9 June 2011, p. Art. no. 5962741
Conference paper - peer reviewed
2011

CMA Misconvergence in Coherent Optical Communication for Signals Generated from a Single PRBS

Johnny Karout, Henk Wymeersch, Ahmet Serdar Tan et al
Wireless & optical communications conference, New Jersey, 15-16 April 2011
Conference paper - peer reviewed
2011

Modified constant modulus algorithm for polarization-switched QPSK

Pontus Johannisson, Martin Sjödin, Magnus Karlsson et al
Optics Express. Vol. 19 (8), p. 7734-7741
Scientific journal article - peer reviewed
2011

Optimization of 16-point Ring Constellations in the Presence of Nonlinear Phase Noise

Lotfollah Beygi, Erik Agrell, Magnus Karlsson et al
Optical Fiber Communication Conference and Exposition (OFC) and The National Fiber Optic Engineers Conference (NFOEC), p. OThO4
Conference paper - peer reviewed
2011

Filter Optimization for Self-Homodyne Coherent WDM Systems using Interleaved Polarization Division Multiplexing

Martin Sjödin, Erik Agrell, Pontus Johannisson et al
Journal of Lightwave Technology. Vol. 29 (9), p. 1219 - 1226
Scientific journal article - peer reviewed
2011

On the performance of BICM with trivial interleavers in nonfading channels

Alex Alvarado, Leszek Szczecinski, Erik Agrell et al
IEEE International Conference on Communications ICC 2011
Conference paper - peer reviewed
2011

Performance Comparison between 120 Gbit/s RZ-DQP-ASK and RZ-D8PSK over a 480 km Link

Ekawit Tipsuwannakul, Magnus Karlsson, Erik Agrell et al
Optical Fiber Communication Conference, OFC 2011; Los Angeles, CA; United States; 6 March 2011 through 10 March 2011, p. OMI5
Conference paper - peer reviewed
2011

Power efficient modulation schemes [Invited book chapter]

Magnus Karlsson, Erik Agrell,
Impact of Nonlinearities on Fiber Optic Communication
Chapter in monograph, book
2011

On the symbol error probability of regular polytopes

Erik Agrell, Magnus Karlsson,
IEEE Transactions on Information Theory. Vol. 57 (6), p. 3411-3415
Scientific journal article - peer reviewed
2010

Modulation scheme [Patent application]

Johnny Karout, Krzysztof Szczerba, Erik Agrell et al
Patent application
2010

Data transmission system and method [Patent application]

Erik Agrell, Martin Sjödin,
Patent application
2010

A novel subcarrier modulation scheme for the optical intensity channel [Patent application]

Johnny Karout, Krzysztof Szczerba, Erik Agrell et al
Patent application
2010

A novel multilevel coded modulation scheme for fiber optical channel with nonlinear phase noise

Lotfollah Beygi, Erik Agrell, Pontus Johannisson et al
Proc. Global Communications Conference, Miami, FL
Conference paper - peer reviewed
2010

Constellation optimization for coherent optical transmission systems

Magnus Karlsson, Erik Agrell,
Proc. IEEE Photonics Society Annual Meeting, Denver, CO [Invited], p. 152-153
Conference paper - peer reviewed
2010

Corrections to 'Bit-interleaved coded modulation in the wideband regime'

Alex Alvarado, Erik Agrell, Albert Guillén i Fàbregas et al
IEEE Transactions on Information Theory. Vol. 56 (12), p. 6513
Scientific journal article - peer reviewed
2010

On the dimensionality of multilevel coded modulation in the high SNR regime

Lotfollah Beygi, Erik Agrell, Magnus Karlsson et al
IEEE Communications Letters. Vol. 14 (11), p. 1056-1058
Scientific journal article - peer reviewed
2010

A novel rate allocation method for multilevel coded modulation

Lotfollah Beygi, Erik Agrell, Magnus Karlsson et al
International symposium on information theory, p. 1983-1987
Conference paper - peer reviewed
2010

Four-Dimensional Optimized Constellations for Coherent Optical Transmission Systems

Magnus Karlsson, Erik Agrell,
36th European Conference on Optical Communication, Turin, Italy [Invited], p. We.8.C.3
Conference paper - peer reviewed
2010

Power efficient subcarrier modulation for intensity modulated channels

Johnny Karout, Erik Agrell, Magnus Karlsson et al
Optics Express. Vol. 18 (17), p. 17913-17921
Scientific journal article - peer reviewed
2010

Wideband Sequential Spectrum Sensing with Varying Thresholds

Kasra Haghighi, Erik Agrell, Arne Svensson et al
Proceedings IEEE Global Communications Conference, Wireless Communications Symposium, Miami, Florida, USA
Conference paper - peer reviewed
2010

On BICM-ID with Multiple Interleavers

Alex Alvarado, Leszek Szczecinski, Erik Agrell et al
IEEE Communications Letters. Vol. 14 (9), p. 785-787
Scientific journal article - peer reviewed
2010

The Impact of Self-Phase Modulation on Digital Clock Recovery in Coherent Optical Communication

Ahmet Serdar Tan, Henk Wymeersch, Pontus Johannisson et al
Proceedings of European Conference on Optical Communication, ECOC 2010, Turin, Italy, September 19-23, 2010
Conference paper - peer reviewed
2010

Convergence Comparison of CMA and ICA for Blind Polarization Demultiplexing of QPSK and 16-QAM Signals

Pontus Johannisson, Henk Wymeersch, Martin Sjödin et al
Proceedings of European Conference on Optical Communication, ECOC 2010, Turin, Italy, September 19-23, 2010
Conference paper - peer reviewed
2010

Operational Regime of Symbol-by-Symbol Phase Noise Estimation for POLMUX 16-QAM

Fangrong Peng, Henk Wymeersch, Ahmet Serdar Tan et al
Proceedings of European Conference on Optical Communication, ECOC, Turin, Italy, September 19-23, 2010
Conference paper - peer reviewed
2010

Interleaved Polarization Division Multiplexing in Self-Homodyne Coherent WDM Systems

Martin Sjödin, Erik Agrell, Guo-Wei Lu et al
Proceedings of European Conference on Optical Communication, ECOC 2010, Turin, Italy, September 19-23, 2010
Conference paper - peer reviewed
2010

Electronic dispersion compensation by Hadamard transformation

Fahd Ahmed Khan, Erik Agrell, Magnus Karlsson et al
Optical Fiber Communication Conference, San Diego, CA, p. paper OWV4
Conference paper - peer reviewed
2010

Exploiting UEP in QAM-based BICM: Interleaver and Code Design

Alex Alvarado, Erik Agrell, Leszek Szczecinski et al
IEEE Transactions on Communications. Vol. 58 (2), p. 500-510
Scientific journal article - peer reviewed
2009

Synchronization-free communications [Patent application]

Erik Agrell, Martin Sjödin,
Patent application
2009

Power-efficient modulation formats in coherent transmission systems

Erik Agrell, Magnus Karlsson,
IEEE Journal of Lightwave Technology. Vol. 27 (22), p. 5115-5126
Scientific journal article - peer reviewed
2009

On optimal constellations for BICM at low SNR

Erik Agrell, Alex Alvarado,
Proceedings IEEE Information Theory Workshop ITW 2009, Taormina, Italy [Best Poster Award], p. 480-484
Conference paper - peer reviewed
2009

Which is the most power-efficient modulation format in optical links?

Magnus Karlsson, Erik Agrell,
Optics Express. Vol. 17 (13), p. 10814-10819
Scientific journal article - peer reviewed
2009

On the Capacity of BICM with QAM Constellations

Alex Alvarado, Erik Agrell, Arne Svensson et al
Proceedings International Wireless Communications and Mobile Computing Conference, IWCMC'09, Leipzig, Germany [Invited]
Conference paper - peer reviewed
2009

Intersymbol interference in DQPSK fibre-optic systems

Hongxia Zhao, Erik Agrell, Magnus Karlsson et al
European Transactions on Telecommunications. Vol. 20 (8), p. 758-769
Scientific journal article - peer reviewed
2009

Correcting Suboptimal Metrics in Iterative Decoders

Alex Alvarado, Víctor Núñez, Leszek Szczecinski et al
Proceedings IEEE International Conference on Communications ICC 2009, Dresden, Germany
Conference paper - peer reviewed
2009

Unequal Error Protection in BICM with QAM Constellations: Interleaver and Code Design

Alex Alvarado, Erik Agrell, Leszek Szczecinski et al
Proceedings IEEE International Conference on Communications ICC 2009, Dresden, Germany
Conference paper - peer reviewed
2008

On the Design of Interleavers for BICM Transmission

Alex Alvarado, Leszek Szczecinski, Erik Agrell et al
Proceedings European Wireless Conference 2008, EW2008, Prague, Czech Republic
Conference paper - peer reviewed
2008

Trellis-Coded Modulation in Fiber-Optic Communications

Hongxia Zhao, Erik Agrell, Magnus Karlsson et al
Report
2008

Unequal bit error probabiltiy in coherent QPSK fiber-optic systems using phase modulator based transmitters

Hongxia Zhao, Erik Agrell, Magnus Karlsson et al
European Transactions on Telecommunications. Vol. 19 (8), p. 895-906
Scientific journal article - peer reviewed
2007

Transmitter comparison and unequal bit error probabilities in coherent QPSK systems

Hongxia Zhao, Magnus Karlsson, Erik Agrell et al
Optical Fiber Communication Conference and the National Fiber Optic Engineers Conference, p. OTuH2
Conference paper - peer reviewed
2007

Gray coding for multilevel constellations in Gaussian noise

Erik Agrell, Johan Lassing, Erik G. Ström et al
IEEE Transactions on Information Theory. Vol. 53 (1), p. 224-235
Scientific journal article - peer reviewed
2006

PSK bit mappings with good minimax error probability

Erik Agrell, Erik G. Ström,
Proc. Information Theory & Applications - Inaugural Workshop, San Diego, CA [Invited]
Conference paper - peer reviewed
2006

Trellis-Coded Modulation in PSK and DPSK Communications

Hongxia Zhao, Erik Agrell, Magnus Karlsson et al
European Conference on Optical Communication, p. 1-2
Conference paper - peer reviewed
2006

Performance comparison of optical 8-ary differential phase-shift keying systems with different electrical decision schemes: Comment

Erik Agrell, Magnus Karlsson,
Optics Express. Vol. 14 (4), p. 1700-1701
Scientific journal article - peer reviewed
2006

Fiber communications using convolutional coding and bandwidth-efficient modulation

Torsten Wuth, Erik Agrell, Magnus Karlsson et al
Optics Express. Vol. 14 (2), p. 542-555
Scientific journal article - peer reviewed
2005

Design and performance of carrier-based direct-sequence ultra-wideband systems

Matts-Ola Wessman, Arne Svensson, Erik Agrell et al
Report
2005

Bit error probability of coherent M-ary PSK over flat Rayleigh fading channels

Johan Lassing, Erik Agrell, Erik G. Ström et al
Report
2005

Optimality of the binary reflected Gray code for the Gaussian channel

Johan Lassing, Erik Agrell, Erik G. Ström et al
Report
2005

Bit error probability of coherent M-ary PSK over flat Rayleigh fading channels

Johan Lassing, Erik G. Ström, Erik Agrell et al
IEE Electronic Letters. Vol. 41 (21), p. 1186-1187
Scientific journal article - peer reviewed
2005

Performance of Coded Single-Band Carrier-Based DS-SS Systems on IEEE 802.15.3a UWB Channels

Matts-Ola Wessman, Arne Svensson, Erik Agrell et al
Proceedings IEEE International Conference on Ultra-Wideband, Zürich, Switzerland, p. 152-157
Conference paper - peer reviewed
2005

Optimal lattices for sampling

Hans R. Künsch, Erik Agrell, Fred A. Hamprecht et al
IEEE Transactions on Information Theory. Vol. 51 (2), p. 634-647
Scientific journal article - peer reviewed
2005

Improvement of DPSK transmission by using convolutional error correction coding

Torsten Wuth, Erik Agrell, Magnus Karlsson et al
Optical Fiber Communication Conference, 2005. Technical Digest. OFC/NFOEC. Vol. 4, p. 534-536
Conference paper - peer reviewed
2004

Frequency Diversity Performance of Coded Multiband-OFDM Systems on IEEE UWB Channels

Matts-Ola Wessman, Arne Svensson, Erik Agrell et al
Proceedings IEEE Vehicular Technology Conference Fall, Los Angeles, California, USA. Vol. 2, p. 1197-1201
Conference paper - peer reviewed
2004

The binary reflected Gray code is optimal for M-PSK

Erik Agrell, Johan Lassing, Erik G. Ström et al
Proc. IEEE International Symposium on Information Theory, Chicago, Illinois, USA, p. 164
Conference paper - peer reviewed
2004

On the optimality of the binary reflected Gray code

Erik Agrell, Johan Lassing, Erik G. Ström et al
IEEE Transactions on Information Theory. Vol. 50 (12), p. 3170-3182
Scientific journal article - peer reviewed
2003

On the duality between low-rate and high-rate sampling

Erik Agrell, Fred A. Hamprecht, Hans R. Künsch et al
Proc. IEEE International Symposium on Information Theory, Yokohama, Japan, p. 211
Conference paper - peer reviewed
2003

Optimal lattices for interpolation of stationary random fields

Hans R. Künsch, Erik Agrell, Fred A. Hamprecht et al
Report
2003

Unequal Bit-Error Protection in Coherent M-ary PSK

Johan Lassing, Erik G. Ström, Erik Agrell et al
Proceedings IEEE Vehicular Technology Conference Fall, Orlando, Florida, USA. Vol. 1, p. 251-256
Conference paper - peer reviewed
2003

Computation of the Exact Bit Error Rate of Coherent M-ary PSK with Gray Code Bit Mapping

Johan Lassing, Erik G. Ström, Erik Agrell et al
Presented at the Communication Theory Workshop, Mesa, Arizona, USA
Conference paper - peer reviewed
2003

Computation of the Exact Bit-Error Rate of Coherent M-ary PSK With Gray Code Bit Mapping

Johan Lassing, Erik G. Ström, Erik Agrell et al
IEEE Transactions on Communications. Vol. 51 (11), p. 1758-1760
Scientific journal article - peer reviewed
2003

The exact symbol and bit error probabilities of coherent M-ary PSK

Johan Lassing, Erik G. Ström, Tony Ottosson et al
Proceedings International Symposium on Information Theory, Yokohama, Japan, p. 11
Conference paper - peer reviewed
2003

Exploring a space of materials: Spatial sampling design and subset selection

Fred A. Hamprecht, Erik Agrell,
Experimental Design for Combinatorial and High Throughput Materials Development / edited by Jamed N. Cawse [Invited], p. 277-307
Chapter in monograph, book
2002

Closest point search in lattices

Erik Agrell, Thomas Eriksson, Alexander Vardy et al
IEEE Transactions on Information Theory. Vol. 48 (8), p. 2201-2214
Scientific journal article - peer reviewed
2001

A table of upper bounds for binary codes

Erik Agrell, Alexander Vardy, Kenneth Zeger et al
IEEE Transactions on Information Theory. Vol. 47 (7), p. 3004-3006
Scientific journal article - peer reviewed
2000

Closest point search in lattices

Erik Agrell, Thomas Eriksson, Alexander Vardy et al
Report
2000

Constant-weight code bounds from spherical code bounds

Erik Agrell, Alexander Vardy, Kenneth Zeger et al
Proc. IEEE International Symposium on Information, Sorrento, Italy, p. 391
Conference paper - peer reviewed
2000

Upper bounds for constant-weight codes

Erik Agrell, Alexander Vardy, Kenneth Zeger et al
IEEE Transactions on Information Theory. Vol. 46 (7), p. 2373-2395
Scientific journal article - peer reviewed
1998

Image compression in San Diego

Erik Agrell,
SIMO-bulletinen [Invited] (2), p. 4-5
Journal article - popular science
1998

On the Voronoi neighbor ratio for binary linear block codes

Erik Agrell,
IEEE Transactions on Information Theory. Vol. 44 (7), p. 3064-3072
Scientific journal article - peer reviewed
1998

Optimization of lattices for quantization

Erik Agrell, Thomas Eriksson,
IEEE Transactions on Information Theory. Vol. 44 (5), p. 1814-1828
Scientific journal article - peer reviewed
1997

Voronoi-Based Coding

Erik Agrell,
Doctoral thesis
1996

Lattice-based quantization, Part II

Thomas Eriksson, Erik Agrell,
Report
1996

Lattice-based quantization, Part I

Erik Agrell, Thomas Eriksson,
Report
1996

Voronoi regions for binary linear block codes

Erik Agrell,
IEEE Transactions on Information Theory. Vol. 42 (1), p. 310-316
Scientific journal article - peer reviewed
1996

The Hadamard transform - a tool for index assignment

Petter Knagenhjelm, Erik Agrell,
IEEE Transactions on Information Theory. Vol. 42 (4), p. 1139-1151
Scientific journal article - peer reviewed
1995

ML optimal CDMA multiuser receiver

Erik Agrell, Tony Ottosson,
Electronics Letters. Vol. 31 (18), p. 1554-1555
Scientific journal article - peer reviewed
1994

How to evaluate search methods for vector quantization

Erik Agrell, Per Hedelin,
Proc. Nordic Signal Processing Symposium, Ålesund, Norway, p. 258-263
Conference paper - peer reviewed
1993

Spectral coding by fast vector quantization

Erik Agrell,
Proc. IEEE Workshop on Speech Coding for Telecommunications, Sainte-Adèle, Québec, Canada, p. 61-62
Conference paper - peer reviewed
1993

A method for examining vector quantizer structures

Erik Agrell,
Proc. IEEE Int. Symposium on Information Theory, San Antonio, Texas, USA, p. 394
Conference paper - peer reviewed