33 citations · 78 across the 10 of their papers we have counts for
8 papers · 1 filter
Benchmarking and Interpreting End-to-end Learning of MIMO and Multi-User Communication
Jinxiang Song, Christian Häger, Jochen Schröder +3
End-to-end autoencoder (AE) learning has the potential of exceeding the performance of human-engineered transceivers and encoding schemes, without a priori knowledge of communicati…
On Low-Complexity Decoding of Product Codes for High-Throughput Fiber-Optic Systems
Alireza Sheikh, Alexandre Graell i Amat, Gianluigi Liva +2
We study low-complexity iterative decoding algorithms for product codes. We revisit two algorithms recently proposed by the authors based on bounded distance decoding (BDD) of the…
Miscorrection-free Decoding of Staircase Codes
Christian Häger, Henry D. Pfister
We propose a novel decoding algorithm for staircase codes which reduces the effect of undetected component code miscorrections. The algorithm significantly improves performance, wh…
Deterministic and Ensemble-Based Spatially-Coupled Product Codes
Christian Häger, Henry D. Pfister, Alexandre Graell i Amat +1
Several authors have proposed spatially-coupled (or convolutional-like) variants of product codes (PCs). In this paper, we focus on a parametrized family of generalized PCs that re…
Terminated and Tailbiting Spatially-Coupled Codes with Optimized Bit Mappings for Spectrally Efficient Fiber-Optical Systems
Christian Häger, Alexandre Graell i Amat, Fredrik Brännström +2
We study the design of spectrally efficient fiber-optical communication systems based on different spatially coupled (SC) forward error correction (FEC) schemes. In particular, we…
On the Information Loss of the Max-Log Approximation in BICM Systems
Mikhail Ivanov, Christian Häger, Fredrik Brännström +3
We present a comprehensive study of the information rate loss of the max-log approximation for -ary pulse-amplitude modulation (PAM) in a bit-interleaved coded modulation (BICM)…
A Low-Complexity Detector for Memoryless Polarization-Multiplexed Fiber-Optical Channels
Christian Häger, Lotfollah Beygi, Erik Agrell +3
A low-complexity detector is introduced for polarization-multiplexed M-ary phase shift keying modulation in a fiber-optical channel impaired by nonlinear phase noise, generalizing…
Optimized Bit Mappings for Spatially Coupled LDPC Codes over Parallel Binary Erasure Channels
Christian Häger, Alexandre Graell i Amat, Alex Alvarado +2
In many practical communication systems, one binary encoder/decoder pair is used to communicate over a set of parallel channels. Examples of this setup include multi-carrier transm…