Multiuser Detection based on Random-Set Theory
In mobile multiple-access communications,not only the location of active users,but also their number varies with time.In typical analysis,multiuser detection theory has been developed under the assumption that the number of active users is constant and known at the receiver,and coincides with the maximum number of users entitled to access the system.This assumption is often overly pessimistic,since many users might be inactive at any given time,and detection under the assumption of the number of users larger than the real one may impair performance.The main goal of this paper is to introduce a general approach to the problem of identifying active users and estimating their parameters and data in a random-access system where users are continuously entering and leaving the system.The tool we advocate is random-set theory (RST): applying this,we derive optimum receivers in an environment where the set of transmitters comprises an unknown number of elements.In this paper we restrict ourselves to active user identification and data detection.
Zhao Zhijin Yao Yao
Telecommunication School,Hangzhou Dianzi UniversityHangzhou,Zhejiang,310018,China Telecommunication School,Hangzhou Dianzi University Hangzhou,Zhejiang,310018,China
国际会议
9th International Conference on Signal Processing(第九届国际信号处理学术会议)(ICSP08)
北京
英文
2008-10-26（万方平台首次上网日期，不代表论文的发表时间）