Improved Belief Propagation Decoder for LDPC-CRC-Polar Codes with Bit-Freezing

作     者：Qasim Jan Yin Chao Pan Zhiwen Muhammad Furqan Zakir Ali You Xiaohu Qasim Jan;Yin Chao;Pan Zhiwen;Muhammad Furqan;Zakir Ali;You Xiaohu

作者机构：National Mobile Communications Research LaboratorySoutheast UniversityNanjing 210096China Purple Mountain LaboratoriesNanjing 211100China Department of Computer ScienceNational University of Computer and Emerging Sciences Peshawar Campus 25100Pakistan Department of Software EngineeringCapital University of Science and Technology(CUST)Islamabad 44000Pakistan Department of Computer SciencesBahria University Lahore CampusPakistan 

出 版 物：《China Communications》 (中国通信（英文版）)

年 卷 期：2024年第21卷第7期

页      面：135-148页

核心收录：

学科分类：080902[工学-电路与系统] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 

基　　金：partially supported by the National Key Research and Development Project under Grant 2020YFB1806805 

主　　题：belief propagation bit-flipping concatenated codes LDPC-CRC-Polar codes polar codes 

摘      要：Though belief propagation bit-flip(BPBF)decoding improves the error correction performance of polar codes,it uses the exhaustive flips method to achieve the error correction performance of CA-SCL decoding,thus resulting in high decoding complexity and *** alleviate this issue,we incorporate the LDPC-CRC-Polar coding scheme with BPBF and propose an improved belief propagation decoder for LDPC-CRC-Polar codes with bit-freezing(LDPCCRC-Polar codes BPBFz).The proposed LDPCCRC-Polar codes BPBFz employs the LDPC code to ensure the reliability of the flipping set,i.e.,critical set(CS),and dynamically update *** modified CS is further utilized for the identification of error-prone *** proposed LDPC-CRC-Polar codes BPBFz obtains remarkable error correction performance and is comparable to that of the CA-SCL(L=16)decoder under medium-to-high signal-to-noise ratio(SNR)*** gains up to 1.2dB and 0.9dB at a fixed BLER=10-4compared with BP and BPBF(CS-1),*** addition,the proposed LDPC-CRC-Polar codes BPBFz has lower decoding latency compared with CA-SCL and BPBF,i.e.,it is 15 times faster than CA-SCL(L=16)at high SNR regions.