西安电子科技大学学报（自然科学版）2017，Vol.44Issue(3)：151-156,6.DOI:10.3969/j.issn.1001-2400.2017.03.026
非正交多址接入中稀疏多用户检测方法
Method of sparse multi-user detection in non-orthogonal multiple access
摘要
Abstract
For the features of the uplink non-orthogonal multiple access (NOMA) system for 5G in the future,in which the number of connected users is huge in the multi-user detection,the active users within a given time are rare and the signals are sparse.A non-orthogonal multiple access system Chips MapperCDMA is designed by taking advantage of compressive sensing theory and the demand of the NOMA system of 5G.Combined with the compressive sensing technique,it detects the active users and data of the uplink NOMA system.It greatly reduces the control signaling overhead and transmission delay because the active users do not send the active status information to the base station and do not need to interact with the base station in advance.Simulation results show that the system can not only take advantage of compressive sensing theory to detect the active users and data reliably,but also achieve overload.Under the circumstances in which active users are sparse,the overload rate can be up to 300％,which greatly improves the spectrum efficiency.关键词
非正交多址/多用户检测/压缩感知/过载Key words
non-orthogonal multiple access/multi-user detection/compressive sensing/overload分类
信息技术与安全科学引用本文复制引用
李燕龙,陈晓,詹德满,王俊义..非正交多址接入中稀疏多用户检测方法[J].西安电子科技大学学报（自然科学版）,2017,44(3):151-156,6.基金项目
国家自然科学基金资助项目(61371107,61362006) （61371107,61362006）
无线宽带与信号处理重点实验室基金资助项目(GXKL061501) （GXKL061501）
北京邮电大学泛网无线通信教育部重点实验室资助项目(KFKT-2014102) （KFKT-2014102）
认知无线电与信息处理教育部重点实验室2015年主任基金资助项目(CRKL150111) （CRKL150111）
