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The physical-layer network coding (PNC) becomes a popular research topic, and the multiuser PNC network is still an open issue. This paper investigates the uniquely-decodable codes (UDC) by using Iterative construction algorithm, and applies the generated UDC to the multiuser PNC network that based on amplify-and- forward (AF) criterion. Due to the attractive features of UDC, the sum data rate can...
Low-density parity-check (LDPC) codes constructed over the Galois field GF(q) (q>2), which are also called non-binary LDPC codes, are an extension of binary LDPC codes with significantly better performance. In this paper, an efficient column-layered decoding algorithm, which can reduce the message memory as well as the average number of iterations dramatically, is proposed for min-max decoding...
Nonbinary low-density parity-check (NB-LDPC) codes are an extension of binary LDPC codes with significantly better performance. Although various kinds of low-complexity iterative decoding algorithms have been proposed, the VLSI implementation of NB-LDPC decoders still remains a big challenge due to its high complexity and long latency. In this brief, a highly efficient check node processing scheme,...
This paper presents a low-power decoder design approach for generic quasi-cyclic low-density parity-check (QC-LDPC) codes based on the layered min-sum decoding algorithm. To reduce the energy consumption, a novel message length-shortening scheme is explored. The check node processing unit (CNU) is accordingly optimized using bit-serial architecture. This low cost design scheme can greatly lower the...
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