Stopping-Set Assisted Reinforced Belief Propagation for Decoding Short LDPC Codes
Journal
IEEE Communications Letters
Journal Volume
26
Journal Issue
3
Pages
505-508
Date Issued
2021
Author(s)
Abstract
The low-density parity-check (LDPC) code is chosen to be a channel coding scheme for ultra-reliable and low-latency communications (URLLC) in 5G. However, short LDPC compromises the belief propagation (BP) decoder because of the stopping set (SS) in the decoding graph. We propose to perform different node operations according to the SS. A dynamic SS selection according to the received sequence is further applied. In the length 308 5G LDPC, our decoders outperform prior work, improving BP and collaborative BP at block error probability (BLER) of 3×10-5 by around 0.176 and 0.092 dB respectively, with almost the same number of iterations. IEEE
Subjects
5G
5G mobile communication
Belief propagation
Decoding
Gaussian channels
Iterative decoding
Short LDPC codes
Standards
Stopping Set
Ultra reliable low latency communication
5G mobile communication systems
Backpropagation
Channel coding
Forward error correction
Satellite communication systems
Channel coding schemes
Iterative decodings
Low-density parity-check
Low-density parity-check codes
Low-latency communication
Short low-density parity-check code
Stopping set
Type
journal article