摘要
新型的多址接入技术在5G移动通信系统中有着非常重要的作用。提出一种新的非正交的复空间分割多址(CSDM)技术,并将其与传统MIMO系统结合形成CSDM-MIMO系统。CSDM-MIMO系统能在同一时间同一频率一根天线发送多路用户数据,提高了数据传输率和系统容量。分别用最小二乘(LS)算法和最小均方误差(MMSE)算法对系统特殊的虚拟信道进行估计,同时利用接收端反馈的误码率(BER)和人工鱼群算法(AFSA)对系统的最优权值进行搜索。
The new multiple access technology plays a very important role in 5 G mobile communication system.In this article,a new non-orthogonal complex space division multiple(CSDM)technique is proposed and combined with traditional multiple input mul-tiple output(MIMO)system to form CSDM-MIMO system.The CSDM-MIMO system can transmit multiple user data on one antenna at the same time and same frequency,which improves the data transmission rate and system capacity.The system special virtual channel is estimated by least squares(LS)algorithm and minimum mean square error(MMSE)algorithm respectively.At the same time,the optimal weight of the system is searched by the bit error rate(BER)fed back by the receiver and artificial fish swarm algorithm(AFSA).
作者
肖骏
周渊平
肖宇彤
Xiao Jun;Zhou Yuanping;Xiao Yutong(College of Electronics and Information Engineering,Sichuan University,Chengdu 610064,China)
出处
《电子技术应用》
2019年第4期83-86,91,共5页
Application of Electronic Technique
基金
国家自然科学基金项目(61831004)
关键词
MIMO系统
多址接入
虚拟信道估计
权值优化
MIMO system
multiple access
virtual channel estimation
weight optimization
