High-Throughput Power-Efficient DSP for Fiber-Optic Communication Systems
Licentiatavhandling, 2018

Communication networks are a vital backbone of the modern society. Power dissipation of optical communication links and digital signal processing (DSP) subsystems for these links are a major concern as throughput requirements increase, and the number of deployed systems grows. We are approaching fundamental integrated-circuit scaling limits quickly, and it is thus no longer possible to assume that feature-size scaling will enable implementation of ever more complex algorithms. Therefore, approaching DSP from an implementation perspective, and designing low-power high-performance algorithms will become increasingly more important. This thesis considers power- and energy-efficiency improvements in real-time implementation of DSP algorithms. High-throughput parallel implementations of algorithms are presented and improvements in currently-employed major power-dissipating DSP subsystems (chromatic dispersion compensation and dynamic equalization) are considered. Implementation-aware design of advanced algorithms for long-haul transmission systems is considered. This thesis also considers possible power-reduction in short-haul systems through introduction of forward error correction.

Non-linear Impairment Mitigation

Application Specific Integrated Circuits

Forward Error Correction

Fiber Optic Communication

Digital Signal Processing

Communication Systems

EDIT, room EA
Opponent: Dr. David Millar, Mitsubishi Electric Research Laboratories, Cambridge, Massachusetts, USA.


Christoffer Fougstedt

Chalmers, Data- och informationsteknik, Datorteknik

Dynamic Equalizer Power Dissipation Optimization

2016 Optical Fiber Communications Conference and Exhibition,; (2016)

Paper i proceeding

Time-Domain Digital Back Propagation: Algorithm and Finite-Precision Implementation Aspects

Optical Fiber Communications Conference and Exhibition,; (2017)p. Article no 7937325-

Paper i proceeding

Low-Power Low-Latency BCH Decoders for Energy-Efficient Optical Interconnects

Journal of Lightwave Technology,; Vol. 35(2017)p. 5201-5207

Artikel i vetenskaplig tidskrift

Finite-Precision Optimization of Time-Domain Digital Back Propagation by Inter-Symbol Interference Minimization

Proceedings of 43rd European Conference and Exhibition on Optical Communications (ECOC),; (2017)

Paper i proceeding

Filter Implementation for Power-Efficient Chromatic Dispersion Compensation




Annan elektroteknik och elektronik


Informations- och kommunikationsteknik


Chalmers tekniska högskola

EDIT, room EA

Opponent: Dr. David Millar, Mitsubishi Electric Research Laboratories, Cambridge, Massachusetts, USA.