通信学报2025，Vol.46Issue(3)：122-130,9.DOI:10.11959/j.issn.1000-436x.2025055
脉冲噪声干扰下免调度非正交多址接入系统的联合多用户检测和信道估计方法
Joint multi-user detection and channel estimation method for grant-free NOMA systems under impulsive noise interference
摘要
Abstract
Aiming at the widespread impulsive noise interference background in grant-free non-orthogonal multiple ac-cess(NOMA)systems,a joint multi-user detection,channel estimation and impulsive noise estimation method based on temporally multiple sparse Bayes learning and least square was proposed.Firstly,the joint sparsity of sporadic user com-munications and burst impulsive noise under multi-antenna reception was used to model the multi-user detection,chan-nel estimation and impulsive noise estimation problems into a compressed sensing problem of multiple measurement vec-tor.Then,the temporally multiple sparse Bayes learning algorithm was used to obtain the support set of active users and burst impulsive noise.Finally,the least square method was used to estimate the channel and impulsive noise.The simula-tion results show that compared with the existing methods,the proposed method has significant advantages in the perfor-mance of multi-user detection,channel estimation and impulsive noise estimation.This conclusion is further validated by the symbol error rate.关键词
免调度/非正交多址接入/多用户检测/信道估计/脉冲噪声Key words
grant-free/NOMA/multi-user detection/channel estimation/impulsive noise分类
信息技术与安全科学引用本文复制引用
李有明,陈江涛,吴永宏,徐伯禺,蔡万源..脉冲噪声干扰下免调度非正交多址接入系统的联合多用户检测和信道估计方法[J].通信学报,2025,46(3):122-130,9.基金项目
国家重点研发计划基金资助项目(No.2023YFC2809400) （No.2023YFC2809400）
国家自然科学基金资助项目(No.61571250) （No.61571250）
浙江省自然科学基金资助项目(No.LY22F010018) The National Key Research and Development Program of China(No.2023YFC2809400),The National Natural Science Foundation of China(No.61571250),The Natural Science Foundation of Zhejiang Province(No.LY22F010018) （No.LY22F010018）
