Joint Design of Source-Channel Codes with Linear Source Encoding Complexity and Good Channel Thresholds Based on Double-Protograph LDPC Codes

被引：2
|
作者：
Zhan J. [1 ]
Lau F.C.M. [1 ]
机构：
[1] The Hong Kong Polytechnic University, Department of Electrical and Electronic Engineering, Hong Kong
来源：
IEEE Communications Letters | 2023年 / 27卷 / 11期
关键词：
DP-LDPC [!text type='JS']JS[!/text]CC; joint source-channel code; source-check-channel-variable linking protomatrix;
D O I：
10.1109/LCOMM.2023.3320105
中图分类号：
学科分类号：
摘要：
We propose the use of a lower or upper triangular sub-base matrix to replace the identity matrix in the source-check-channel-variable linking protomatrix of a double-protograph low-density parity-check joint-source-channel code (DP-LDPC JSCC). The elements along the diagonal of the proposed lower or upper triangular sub-base matrix are assigned as '1' and the other non-zero elements can take any non-negative integral values. Compared with the traditional DP-LDPC JSCC designs, the new designs show a theoretical channel threshold improvement of up to 0.41 dB and a simulated source symbol error rate improvement of up to 0.5 dB at an error rate of 10-6. © 1997-2012 IEEE.
引用
收藏
页码：2909 / 2913
页数：4
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