移动通信2024，Vol.48Issue(5)：21-26,36,7.DOI:10.3969/j.issn.1006-1010.20240320-0001
基于分层调制的物理层网络编码系统概率成形设计
Probabilistic Shaping Design for Physical Layer Network Coding Systems Based on Hierarchical Modulation
摘要
Abstract
Hierarchical modulation,a crucial technique for unequal protection of data streams based on their significance,is investigated for physical layer network coding(PNC)systems in two-way relay channels.Traditional shaping techniques,which utilize distribution matches for nonlinear shaping and decoding,are inadequate for PNC systems due to the incurred shaping loss when a uniform input distribution is employed.This study introduces a novel linear probabilistic shaping codebook approach that ensures a linear shaping and decoding process.An expression for the achievable rate of the shaped system is further derived.Simulation results demonstrate that the proposed linear shaping scheme achieves a shaping gain of 0.3 dB at low to medium SNR levels.关键词
分层调制/概率成形/物理层网络编码Key words
hierarchical modulation/probabilistic shaping/physical-layer network coding分类
电子信息工程引用本文复制引用
林宇晨,谢肇鹏,陈平平..基于分层调制的物理层网络编码系统概率成形设计[J].移动通信,2024,48(5):21-26,36,7.基金项目
国家自然科学基金委员会"大规模MIMO免授权mMTC通信的物理层关键技术研究"(62171135) （62171135）
