Polar-Coded Physical Layer Network Coding Over Two-Way Relay Channels

作     者：Xie, Zhaopeng Chen, Pingping Mei, Zhen Long, Shi Cai, Kui Fang, Yi 

作者机构：Fuzhou Univ Dept Elect Informat Fuzhou 350001 Fujian Peoples R China Singapore Univ Technol & Design Dept Sci Singapore 487372 Singapore Guangdong Univ Technol Sch Informat Engn Guangzhou 510006 Guangdong Peoples R China Southeast Univ Natl Mobile Commun Res Lab Nanjing 210096 Jiangsu Peoples R China 

出 版 物：《IEEE COMMUNICATIONS LETTERS》 (IEEE通讯快报)

年 卷 期：2019年第23卷第8期

页      面：1301-1305页

核心收录：

学科分类：0810[工学-信息与通信工程] 0808[工学-电气工程] 08[工学] 

基　　金：NSF of China [61871132, 61771149] Singapore Ministry of Education Academic Research Fund Tier 2 [MOE2016-T2-2-054] SUTD-ZJU grant [ZJURP1500102] NSF of Fujian [2019J01223] Open Research Fund of National Mobile Communications Research Laboratory, Southeast University [2018D02] 

主　　题：Polar code physical layer network coding SCL decoding 

摘      要：Both polar codes and physical network coding (PNC) are promising techniques to achieve low-latency and high-rate transmission in 5G communications. In this letter, we investigate a joint polar-coded PNC system over a wireless two-way relay channel (TWRC). By exploiting the nature of PNC, we then propose two successive cancellation list (SCL) decoding schemes for the polar-coded PNC system, XOR-based conventional SCL (XOR-SCL) and joint decoding of PNC and SCL decoding (JPSCL), where message update rules are derived for odd and even channels. Simulation results demonstrate that JPSCL outperforms XOR-SCL over both AWGN and Rayleigh fading channels. In particular, JPSCL achieves a small bit error rate gap, i.e., within 1 dB at rate of 2/5, from SCL in the polar-coded point-to-point system at BER of 10(-5).