611 citations · 2.4k across the 80 of their papers we have counts for
5 papers · 1 filter
Asymptotic Comparison of ML and MAP Detectors for Multidimensional Constellations
Alex Alvarado, Erik Agrell, Fredrik Brännström
A classical problem in digital communications is to evaluate the symbol error probability (SEP) and bit error probability (BEP) of a multidimensional constellation over an additive…
Information Rates of Next-Generation Long-Haul Optical Fiber Systems Using Coded Modulation
Gabriele Liga, Alex Alvarado, Erik Agrell +1
A comprehensive study of the coded performance of long-haul spectrally-efficient WDM optical fiber transmission systems with different coded modulation decoding structures is prese…
Improved Lower Bounds on Mutual Information Accounting for Nonlinear Signal-Noise Interaction
Naga V. Irukulapati, Marco Secondini, Erik Agrell +2
In fiber-optic communications, evaluation of mutual information (MI) is still an open issue due to the unavailability of an exact and mathematically tractable channel model. Tradit…
Achievable Rates of Multidimensional Rotationally Invariant Distributions
Johnny Karout, Rene'-Jean Essiambre, Erik Agrell +1
The maximum achievable rate or mutual informa- tion of multidimensional rotationally invariant distributions in the presence of additive white Gaussian noise is analyzed. A simple…
Modulation Format Independent Joint Polarization and Phase Tracking for Coherent Receivers
Cristian B. Czegledi, Erik Agrell, Magnus Karlsson +1
The state of polarization and the carrier phase drift dynamically during transmission in a random fashion in coherent optical fiber communications. The typical digital signal proce…