无线电工程2026，Vol.56Issue(3)：463-469,7.DOI:10.3969/j.issn.1003-3106.2026.03.009
基于非二次幂极化码的三用户上行非正交多址接入系统
NPOT Codes for Three-user Uplink NOMA Systems
摘要
Abstract
By constructing a joint encoding matrix based on a 3×3 polarizing kernel,the proposed scheme combines the independently encoded information sequences from each user into a single Non-Power-of-Two Polarization(NPOT)code whose length is three times that of an individual user's codeword.A NPOT-Aided Belief Propagation(NPOT-BP)decoding algorithm for three-user uplink Non-Orthogonal Multiple Access(NOMA)system is proposed.Compared with the conventional Successive Interference Cancellation-Belief Propagation(SIC-BP)decoder,the NPOT-BP approach enhances channel polarization through code length extension,thereby enabling reliable joint recovery of all users'information.Simulation results demonstrate that,compared with the SIC-BP scheme,the proposed NPOT-BP scheme achieves a Bit Error Rtae(BER)performance gain of over 0.7 dB.Furthermore,the proposed scheme enables reliable joint recovery of multi-user information using only a single decoder,thereby effectively reducing the system computational overhead.关键词
非二次幂极化码/非正交多址接入/置信传播译码/串行干扰消除/极化效应辅助Key words
NPOT codes/NOMA/belief propagation decoding/successive interference cancellation/polarization-aided分类
信息技术与安全科学引用本文复制引用
林海翔,谢肇鹏,丘毓萍,石昌伟,陈平平..基于非二次幂极化码的三用户上行非正交多址接入系统[J].无线电工程,2026,56(3):463-469,7.基金项目
国家自然科学基金(62171135) National Natural Science Foundation of China(62171135) （62171135）
