Concatenated Spatially Coupled LDPC Codes With Sliding Window Decoding for Joint Source-Channel Coding

被引：16
|
作者：
Golmohammadi, Ahmad [1 ,2 ]
Mitchell, David G. M. [1 ]
机构：
[1] New Mexico State Univ, Klipsch Sch Elect & Comp Engn, Las Cruces, NM 88003 USA
[2] Bose Corp, Framingham, MA 01701 USA
来源：
IEEE TRANSACTIONS ON COMMUNICATIONS | 2022年 / 70卷 / 02期
基金：
美国国家科学基金会;
关键词：
Codes; Parity check codes; Decoding; Source coding; Convolutional codes; Generators; Sparse matrices; Low-density parity-check (LDPC) codes; spatially coupled codes; joint source-channel coding; window decoding; TURBO CODES; DESIGN;
D O I：
10.1109/TCOMM.2021.3126750
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In this paper, a method for joint source-channel coding (JSCC) based on concatenated spatially coupled low-density parity-check (SC-LDPC) codes is investigated. A construction consisting of two SC-LDPC codes is proposed: one for source coding and the other for channel coding, with a joint belief propagation-based decoder. Also, a novel windowed decoding (WD) scheme is presented with significantly reduced latency and complexity requirements. The asymptotic behavior for various graph node degrees is analyzed using a protograph-based Extrinsic Information Transfer (EXIT) chart analysis for both LDPC block codes with block decoding and for SC-LDPC codes with the WD scheme, showing robust performance for concatenated SC-LDPC codes. Simulation results show a notable performance improvement compared to existing state-of-the-art JSCC schemes based on LDPC codes with comparable latency and complexity constraints.
引用
收藏
页码：851 / 864
页数：14
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