Erik Agrell
Showing 330 publications
Power-Efficient Voronoi Constellations for Fiber-Optic Communication Systems
Kryptovalutor – energiförbrukning och miljöeffekter
Physical Realizations of Multidimensional Voronoi Constellations in Optical Communication Systems
On the Best Lattice Quantizers
Corrections to “Power-Efficient Voronoi Constellations for Fiber-Optic Communication Systems”
Nonlinear Fiber Transmission of Compressed Shaping Signals
Low-Complexity Symbol Demapping for Multidimensional Multilevel Coded Modulation
Data preprocessing for machine-learning-based adaptive data center transmission
Dynamic Joint Functional Split and Resource Allocation Optimization in Elastic Optical Fronthaul
Low-Complexity Voronoi Shaping for the Gaussian Channel
Benchmarking and Interpreting End-to-end Learning of MIMO and Multi-User Communication
Comparison of Physical Realizations of Multidimensional Voronoi Constellations in Single Mode Fibers
Polarization Tracking in the Presence of PDL and Fast Temporal Drift
Low-Complexity Symbol Demapping for Multidimensional Multilevel Coded Modulation
Capacity Bounds under Imperfect Polarization Tracking
Improved Polarization Tracking in the Presence of PDL
Data-Driven Estimation of Capacity Upper Bounds
Cross-layer static resource provisioning for dynamic traffic in flexible grid optical networks
Compressed Shaping: Concept and FPGA Demonstration
The Optimal Lattice Quantizer in Nine Dimensions
Designing Voronoi Constellations to Minimize Bit Error Rate
Performance Prediction Recipes for Optical Links
Low-complexity geometric shaping
Analytical Modeling of Nonlinear Fiber Propagation for Four Dimensional Symmetric Constellations
Energy-and Bandwidth-Efficient, QoS-Aware Edge Caching in Fog-Enhanced Radio Access Networks
Improved Simulation Accuracy of the Split-Step Fourier Method
Antialiased transmitter-side digital backpropagation
When to Use Optical Amplification in Noncoherent Transmission: An Information-Theoretic Approach
Enabling Technologies for Optical Data Center Networks: Spatial Division Multiplexing
Iterative configuration in elastic optical networks [Invited]
Optimization of Transmitter-Side Signal Rotations in the Presence of Laser Phase Noise
Lattice-based geometric shaping
Performance Monitoring for Live Systems with Soft FEC and Multilevel Modulation
Required and received SNRs in coded modulation
Post-FEC BER Benchmarking for Bit-Interleaved Coded Modulation With Probabilistic Shaping
End-to-End Learning of Geometrical Shaping Maximizing Generalized Mutual Information
Sparse-dense MLC for peak power constrained channels
On the Performance under Hard and Soft Bitwise Mismatched-Decoding
General QoS-Aware Scheduling Procedure for Passive Optical Networks
Iterative Resource Allocation Algorithm for EONs Based on a Linearized GN Model
Static resource allocation for dynamic traffic
Joint Power-Efficient Traffic Shaping and Service Provisioning for Metro Elastic Optical Networks
Overcoming the Switching Bottlenecks in Wavelength-Routing, Multicast-Enabled Architectures
Performance monitoring for live systems with soft FEC
Channel allocation in elastic optical networks using traveling salesman problem algorithms
On the Performance of Joint-Core Carrier-Phase Estimation in the Presence of Intercore Skew
Quality of Transmission Aware Optical Networking Using Enhanced Gaussian Noise Model
Joint Source-Channel Coding via Compressed Distribution Matching in Fiber-Optic Communications
Iterative Detection and Phase-Noise Compensation for Coded Multichannel Optical Transmission
Probabilistic spectrum Gaussian noise estimate for random bandwidth traffic
Corrections to 'High capacity transmission with few-mode fibers'
On the Impact of Intercore Skew on Joint-Core Carrier-Phase Estimation
Characteristics of homogeneous multi-core fibers for SDM transmission
How to Increase the Achievable Information Rate by Per-Channel Dispersion Compensation
FPGA implementation of distribution matching and dematching
Hierarchical Distribution Matching for Probabilistically Shaped Coded Modulation
Nonlinearity Mitigation in WDM Systems: Models, Strategies, and Achievable Rates
High capacity transmission with few-mode fibers
Dynamic Resource Allocation in Metro Elastic Optical Networks using Lyapunov Drift Optimization
Regular perturbation for the weak-dispersion regime
Accuracy Assessment of Nondispersive Optical Perturbative Models through Capacity Analysis
Asymptotic comparison of ML and MAP detectors for multidimensional constellations
Technologies toward implementation of probabilistic constellation shaping
Information-Theoretic Tools for Optical Communications Engineers [Invited]
Wavelength Reuse for Scalable Multicasting: A Cross-Layer Perspective
Efficient Offline Evaluation of FEC Codes Based on Captured Data with Probabilistic Shaping
159 Tbit/s C+L Band Transmission over 1045 km 3-Mode Graded-Index Few-Mode Fiber
Demodulation and Detection Schemes for a Memoryless Optical WDM Channel
A Low-Complexity Near-Optimal Detector for Multispan Zero-Dispersion Fiber-Optic Channels
Network Performance Trade-Off in Modular Data Centers With Optical Spatial Division Multiplexing
Multicast scheduling of wavelength-tunable, multiqueue optical data center switches
Modulation and detection for multicore superchannels with correlated phase noise [Invited]
Scalable Interconnection Scheme for Data Center Multicast Applications
Spectral efficiency limits in crosstalk-impaired multi-core fiber links
Multi-channel collision-free reception for optical interconnects
Multidimensional sampling of isotropically bandlimited signals
Joint Phase Tracking for Multicore Transmission with Correlated Phase Noise
Improved lower bounds on mutual information accounting for nonlinear signal–noise interaction
Improving the Achievable Rates of Optical Coherent Transmission with Back-Propagation
Regenerator Allocation in Nonlinear Elastic Optical Networks With Random Data Rates
Pilot Distributions for Phase Tracking in Space-Division Multiplexed Systems
Achievable information rates of nonbinary codes for optical fiber transmission
High Capacity Transmission Systems Using Homogeneous Multi-Core Fibers [Invited]
A Tighter Upper Bound on the Capacity of the Nondispersive Optical Fiber Channel
Capacity scaling of flexible optical networks with nonlinear impairment [Invited]
Phase-Noise Compensation for Spatial-Division Multiplexed Transmission
Modified Digital Backpropagation Accounting for Polarization-Mode Dispersion
Scalability analysis methodology for passive optical interconnects in data center networks using PAM
Fiber nonlinearity mitigation in WDM systems: Strategies and achievable rates
Joint Assignment of Power, Routing, and Spectrum in Static Flexible-Grid Networks
Multidimensional Modulation and Coding in Optical Transport [Invited]
Optical Circuit Granularity Impact in TCP-Dominant Hybrid Data Center Networks
Achievable rates of multidimensional multisphere distributions
Multicast Scheduling for Optical Data Center Switches with Tunability Constraints
PAM Performance Analysis in Multicast-Enabled Wavelength-Routing Data Centers
Capacity bounds in optical communications
Matrix receiving scheme supporting arbitrary multiple-wavelength reception for optical interconnects
Performance Metrics for Systems with Soft-Decision FEC and Probabilistic Shaping
Digital backpropagation accounting for polarization-mode dispersion
A Novel Demodulation Scheme for a Memoryless Optical Interference Channel
High-capacity MCF transmission with wideband comb
Information rates of next-generation long-haul optical fiber systems using coded modulation
On the limits of digital back-propagation in the presence of transceiver noise
Temporal Stochastic Channel Model for Absolute Polarization State and Polarization-Mode Dispersion
Network performance trade-Off in optical spatial division multiplexing data centers
Regenerator Site Predeployment in Nonlinear Dynamic Flexible-Grid Networks
An impairment-aware resource allocation scheme for dynamic elastic optical networks
Ultra-Wideband Nonlinearity Compensation Performance in the Presence of PMD
Polarization Drift Channel Model for Coherent Fibre-Optic Systems
Replacing the Soft-Decision FEC Limit Paradigm in the Design of Optical Communication Systems
Multidimensional Modulation and Coding
Polarization-Mode Dispersion Aware Digital Backpropagation
Roadmap of optical communications
Modulation Format Independent Joint Polarization and Phase Tracking for Coherent Receivers
Sensitivity Comparison of Time Domain Hybrid Modulation and Rate Adaptive Coding
Parallel Improved Schnorr-Euchner Enumeration SE++ for the CVP and SVP
Stochastic Digital Backpropagation with Residual Memory Compensation
On the Information Loss of the Max-Log Approximation in BICM Systems
Regenerator site selection in impairment-aware elastic optical networks
A Deterministic Construction and Density Evolution Analysis for Generalized Product Codes
Pb/s, homogeneous, single-mode, multi-core fiber systems
Traffic-grooming- and multipath-routing-enabled impairment-aware elastic optical networks
Multidimensional Optimized Optical Modulation Formats
Joint-Polarization Phase-Noise Estimation and Symbol Detection for Optical Coherent Receivers
To overcome the scalability limitation of passive optical interconnects in datacentres
Multidimensional modulation formats for coherent optical communications
Implications of information theory in optical fibre communications
Information-theory-friendly models for fiber-optic channels: A primer
Four-Dimensional Coded Modulation with Bit-Wise Decoders for Future Optical Communications
Four-Dimensional Estimates of Mutual Information in Coherent Optical Communication Experiments
A simple strategy for mitigating XPM in nonlinear WDM optical systems
Nonlinear impairment aware resource allocation in elastic optical networks
Resource Allocation for Flexible-Grid Optical Networks With Nonlinear Channel Model
Power Consumption of Hybrid EDFA/Raman Amplified Systems
Code Rate Optimization in Elastic Optical Networks
Link-Level Resource Allocation for Flexible-Grid Nonlinear Fiber-Optic Communication Systems
Resource Allocation in Nonlinear Flexible-Grid Fiber-Optic Networks
Spatially-Coupled Codes for Optical Communications: State-of-the-Art and Open Problems
On the Use of Factor Graphs in Optical Communications
Experimental Investigation of a Four-Dimensional 256-ary Lattice-based Modulation Format
Replacing the Soft-Decision FEC Limit Paradigm in the Design of Optical Communication Systems
Nonlinear Impairment-Aware Static Resource Allocation in Elastic Optical Networks
Power Optimization in Nonlinear Flexible-Grid Optical Networks
LDPC codes for optical channels: Is the "FEC limit" a good predictor of post-FEC BER?
On Parameter Optimization for Staircase Codes
Backward particle message passing
Conditions for a Monotonic Channel Capacity
Influence of Behavioral Models on Multiuser Channel Capacity
Symbol-by-Symbol Joint Polarization and Phase Tracking in Coherent Receivers
Optimum detection in presence of nonlinear distortions with memory
Coherent transmission channels as 4d rotations
Linear block-coding across >5 Tb/s PDM-64QAM spatial-super-channels in a 19-core fiber
Single parity check-coded 16QAM over spatial superchannels in multicore fiber transmission
K-Over-L Multidimensional Position Modulation
Coded Modulation for Fiber-Optic Networks
Energy efficient modulation formats for multi-core fibers
Modulation formats for multi-core fiber transmission
Stochastic Digital Backpropagation
Optimized Bit Mappings for Spatially Coupled LDPC Codes over Parallel Binary Erasure Channels
Sensing or Transmission: Causal Cognitive Radio Strategies with Censorship
Capacity of a nonlinear optical channel with finite memory
Single parity check multi-core modulation for power efficient spatial super-channels
Bandlimited Power-Efficient Signaling for Intensity Modulation
Modeling of Nonlinear Signal Distortion in Fiber-Optic Networks
Bandlimited Power-Efficient Signaling and Pulse Design for Intensity Modulation
Improving soft FEC performance for higher-order modulations via optimized bit channel mappings
High-SNR Asymptotics of Mutual Information for Discrete Constellations With Applications to BICM
On Maximum Likelihood Sequence Detectors for Single-channel Coherent Optical Communications
On the Asymptotic Performance of Bit-Wise Decoders for Coded Modulation
A Simple Approximation for the Bit-Interleaved Coded Modulation Capacity
Rate-Adaptive Coded Modulation for Fiber-Optic Communications
Biorthogonal modulation in 8 dimensions experimentally implemented as 2PPM-PS-QPSK
Achievable rates for four-dimensional coded modulation with a bit-wise receiver
A Low-Complexity Detector for Memoryless Polarization-Multiplexed Fiber-Optical Channels
On the Exact BER of Bit-Wise Demodulators for One-Dimensional Constellations
Extending Digital Backpropagation to Account for Noise
Subset-Optimized Polarization-Multiplexed PSK for Fiber-Optic Communications
WDM channel capacity and its dependence on multichannel adaptation models
35.2 Gbps 8-PAM transmission over 100 m of MMF using an 850 nm VCSEL
Signal Shaping for BICM at Low SNR
MCRB for Timing and Phase Offset for Low-Rate Optical Communication with Self-Phase Modulation
High-SNR Asymptotics of Mutual Information for Discrete Constellations
Frequency and polarization switched QPSK
On nonlinearly-induced noise in single-channel optical links with digital backpropagation
Design of APSK Constellations for Coherent Optical Channels with Nonlinear Phase Noise
Methodology for Power-Aware Coherent Receiver Design
On the Equivalence of TCM Encoders
Achieving the Shannon Limit with Probabilistically Shaped BICM
Optimized lattice-based 16-level subcarrier modulation for IM/DD systems
Modulation method and apparatus for amplitude- or intensity-modulated communication systems
4-PAM for high-speed short-range optical communications
Adaptive Coded Modulation for Nonlinear Fiber-Optical Channels
General BER Expression for One-Dimensional Constellations
Spectrally efficient four-dimensional modulation
Bandlimited Intensity Modulation
Asymptotically optimal trellis coded modulation systems
Constellation Optimization for Coherent Optical Channels Distorted by Nonlinear Phase Noise
A Two-Dimensional Signal Space for Intensity-Modulated Channels
Optimizing Constellations for Single-Subcarrier Intensity-Modulated Optical Systems
Modified Cramer-Rao Bound for Clock Recovery in the Presence of Self-Phase Modulation
First-order asymptotics of the BICM mutual information: Uniform vs. nonuniform distributions
On Optimum Causal Cognitive Spectrum Reutilization Strategy
The Limits of Digital Backpropagation in Nonlinear Coherent Fiber-Optical Links
Continuous-Amplitude Modulation for Optical Wireless Channels
Multidimensional capacity-approaching coded modulation scheme for fiber optical communications
Comparison of 128-SP-QAM with PM-16-QAM
A Discrete-Time Model for Uncompensated Single-Channel Fiber-Optical Links
Satellite constellations: Towards the nonlinear channel capacity
Optimization of 16-point Ring Constellations in the Presence of Nonlinear Phase Noise
Strictly Bandlimited ISI-Free Transmission Over Intensity-Modulated Channels
Designing Power-Efficient Modulation Formats for Noncoherent Optical Systems
High SNR Bounds for the BICM Capacity
Power efficient modulation schemes [Invited book chapter]
Stochastic Backpropagation for Coherent Optical Communications
Performance Comparison between 120 Gbit/s RZ-DQP-ASK and RZ-D8PSK over a 480 km Link
Signal Statistics in Fiber-Optical Channels with Polarization Multiplexing and Self-Phase Modulation
30 Gbps 4-PAM transmission over 200m of MMF using an 850 nm VCSEL
On BICM receivers for TCM transmission
Generalized pulse-position modulation for optical power-efficient communication
On the performance of BICM with trivial interleavers in nonfading channels
Demonstration of 8-level subcarrier modulation sensitivity improvement in an IM/DD system
Modified constant modulus algorithm for polarization-switched QPSK
Convergence Comparison of the CMA and ICA for Blind Polarization Demultiplexing
Faster Recursions in Sphere Decoding
An ML-based Detector for Optical Communication in the Presence of Nonlinear Phase Noise
Multilevel pulse-position modulation for optical power-efficient communication
Optimal Alphabets and Binary Labelings for BICM at Low SNR
An LLR-based Cognitive Transmission Strategy for Higher Spectrum Reutilization
Experimental comparison of modulation formats in IM/DD links
On the symbol error probability of regular polytopes
30 Gbps 4-PAM transmission over 200m of MMF using an 850 nm VCSEL
CMA Misconvergence in Coherent Optical Communication for Signals Generated from a Single PRBS
Corrections to 'Bit-interleaved coded modulation in the wideband regime'
Exploiting UEP in QAM-based BICM: Interleaver and Code Design
Operational Regime of Symbol-by-Symbol Phase Noise Estimation for POLMUX 16-QAM
On BICM-ID with Multiple Interleavers
Interleaved Polarization Division Multiplexing in Self-Homodyne Coherent WDM Systems
A novel multilevel coded modulation scheme for fiber optical channel with nonlinear phase noise
A novel rate allocation method for multilevel coded modulation
Four-Dimensional Optimized Constellations for Coherent Optical Transmission Systems
Electronic dispersion compensation by Hadamard transformation
On the dimensionality of multilevel coded modulation in the high SNR regime
The Impact of Self-Phase Modulation on Digital Clock Recovery in Coherent Optical Communication
Wideband Sequential Spectrum Sensing with Varying Thresholds
Power efficient subcarrier modulation for intensity modulated channels
Constellation optimization for coherent optical transmission systems
On the Capacity of BICM with QAM Constellations
Which is the most power-efficient modulation format in optical links?
Correcting Suboptimal Metrics in Iterative Decoders
Unequal Error Protection in BICM with QAM Constellations: Interleaver and Code Design
On optimal constellations for BICM at low SNR
Power-efficient modulation formats in coherent transmission systems
Intersymbol interference in DQPSK fibre-optic systems
Trellis-Coded Modulation in Fiber-Optic Communications
On the Design of Interleavers for BICM Transmission
Gray coding for multilevel constellations in Gaussian noise
Transmitter comparison and unequal bit error probabilities in coherent QPSK systems
PSK bit mappings with good minimax error probability
Fiber communications using convolutional coding and bandwidth-efficient modulation
Trellis-Coded Modulation in PSK and DPSK Communications
Performance of Coded Single-Band Carrier-Based DS-SS Systems on IEEE 802.15.3a UWB Channels
Improvement of DPSK transmission by using convolutional error correction coding
Bit error probability of coherent M-ary PSK over flat Rayleigh fading channels
Design and performance of carrier-based direct-sequence ultra-wideband systems
Bit error probability of coherent M-ary PSK over flat Rayleigh fading channels
Optimality of the binary reflected Gray code for the Gaussian channel
On the optimality of the binary reflected Gray code
The binary reflected Gray code is optimal for M-PSK
Frequency Diversity Performance of Coded Multiband-OFDM Systems on IEEE UWB Channels
Computation of the Exact Bit Error Rate of Coherent M-ary PSK with Gray Code Bit Mapping
Optimal lattices for interpolation of stationary random fields
The exact symbol and bit error probabilities of coherent M-ary PSK
Unequal Bit-Error Protection in Coherent M-ary PSK
Computation of the Exact Bit-Error Rate of Coherent M-ary PSK With Gray Code Bit Mapping
Exploring a space of materials: Spatial sampling design and subset selection
On the duality between low-rate and high-rate sampling
Closest point search in lattices
A table of upper bounds for binary codes
Upper bounds for constant-weight codes
Constant-weight code bounds from spherical code bounds
Image compression in San Diego
Optimization of lattices for quantization
On the Voronoi neighbor ratio for binary linear block codes
The Hadamard transform - a tool for index assignment
Voronoi regions for binary linear block codes
ML optimal CDMA multiuser receiver
How to evaluate search methods for vector quantization
A method for examining vector quantizer structures
Spectral coding by fast vector quantization
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Showing 15 research projects
Communications over bursty optical channels
Unlocking the Full-dimensional Fiber Capacity
Signal shaping in optical communications—Beyond the Gaussian channel
Coding for Optical communications In the Nonlinear regime (COIN)
Polarization-aware fiber optic transmisson
Technologies for spatial-division multiplexing: The next frontier in optical communications
Towards flexible and energi-efficient datacentre networks
Towards flexible and energi-efficient datacentre networks
Energy-efficient optical fibre communication
Optical Fiber Interference is Not Noise
Adaptive optical networks: Theory and algorithms for system optimization
MIMO-BICM: Fundamentals, Analysis, and Design
Power-efficient terabit/s transmission
Theory and algorithms for fiber-optical intensity channels