A Low-Complexity Probabilistic Amplitude Shaping With Short Linear Block Codes

We propose a new probabilistic amplitude shaping (PAS) scheme based on short linear block codes. In the proposed system, the capacity-approaching signal distribution is generated in the process of decoding linear block codes for a given information bit sequence. We associate the design problem of sh...

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Bibliographic Details
Published in:IEEE transactions on communications 2021-12, Vol.69 (12), p.7923-7933
Main Authors: Matsumine, Toshiki, Koike-Akino, Toshiaki, Ochiai, Hideki
Format: Article
Language:English
Subjects:
Amplitudes
Binary codes
binary perfect codes
Block codes
Codes
Complexity
Decoding
Gain
Lattices
linear block codes
Modulation
Probabilistic amplitude shaping
Receivers
Signal distribution
Signal processing
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Summary:We propose a new probabilistic amplitude shaping (PAS) scheme based on short linear block codes. In the proposed system, the capacity-approaching signal distribution is generated in the process of decoding linear block codes for a given information bit sequence. We associate the design problem of shaping codes with the classical covering problem, suggesting the use of good covering codes for shaping. From simulation results, it is demonstrated that by selecting perfect binary codes as our shaping codes, the proposed scheme offers a shaping gain of around 0.3-1.0 dB. By comparing with the enumerative sphere shaping (ESS) of the same block length, we verify that the proposed scheme achieves significantly lower storage complexity and computational complexity at the receiver even with comparable block error rate performance.
ISSN:0090-6778
1558-0857
DOI:10.1109/TCOMM.2021.3111032