Publications (25)
Optimizing Constellations for Single-Subcarrier Intensity-Modulated Optical Systems
Johnny Karout, Erik Agrell, Krzysztof Szczerba +1
Improving soft FEC performance for higher-order modulations via optimized bit channel mappings
Christian Häger, Alexandre Graell i Amat, Fredrik Brännström +2
Multidimensional Sampling of Isotropically Bandlimited Signals
Erik Agrell, Balázs Csébfalvi
Faster Projection in Sphere Decoding
Arash Ghasemmehdi, Erik Agrell
Bandlimited Intensity Modulation
Mehrnaz Tavan, Erik Agrell, Johnny Karout
On the symbol error probability of regular polytopes
Erik Agrell, Magnus Karlsson
Achievable Rates of Multidimensional Rotationally Invariant Distributions
Johnny Karout, Rene'-Jean Essiambre, Erik Agrell +1
On Optimum Causal Cognitive Spectrum Reutilization Strategy
Kasra Haghighi, Erik G. Ström, Erik Agrell
Designing Power-Efficient Modulation Formats for Noncoherent Optical Systems
Johnny Karout, Erik Agrell, Krzysztof Szczerba +1
Capacity of a Nonlinear Optical Channel with Finite Memory
Erik Agrell, Alex Alvarado, Giuseppe Durisi +1
On BICM receivers for TCM transmission
Alex Alvarado, Leszek Szczecinski, Erik Agrell
The Channel Capacity Increases with Power
Erik Agrell
A Two-Dimensional Signal Space for Intensity-Modulated Channels
Johnny Karout, Gerhard Kramer, Frank R. Kschischang +1
Conditions for a Monotonic Channel Capacity
Erik Agrell
On the BICM Capacity
Erik Agrell, Alex Alvarado
On the BICM Capacity
Erik Agrell, Alex Alvarado
Design of APSK Constellations for Coherent Optical Channels with Nonlinear Phase Noise
Christian Häger, Alexandre Graell i Amat, Alex Alvarado +1
Modeling of Nonlinear Signal Distortion in Fiber-Optical Networks
Pontus Johannisson, Erik Agrell
Preferred Design of Hierarchical Distribution Matching
Tsuyoshi Yoshida, Magnus Karlsson, Erik Agrell
On the Asymptotic Performance of Bit-Wise Decoders for Coded Modulation
Mikhail Ivanov, Alex Alvarado, Fredrik Brannstrom +1
Rates Achievable on a Fiber-Optical Split-Step Fourier Channel
Kamran Keykhosravi, Erik Agrell, Giuseppe Durisi
On Optimal TCM Encoders
Alex Alvarado, Alexandre Graell i Amat, Fredrik Brannstrom +1
On the Exact BER of Bit-Wise Demodulators for One-Dimensional Constellations
Mikhail Ivanov, Fredrik Brannstrom, Alex Alvarado +1
High-SNR Asymptotics of Mutual Information for Discrete Constellations with Applications to BICM
Alex Alvarado, Fredrik Brannstrom, Erik Agrell +1
Signal Shaping for BICM at Low SNR
Erik Agrell, Alex Alvarado