%0 Journal Article
%A CHANG Yong-yu
%A LI Jun-yao
%A ZENG Tian-yi
%T Joint Pilot Allocation and User Grouping Scheme with Limited SRS Resources
%D 
%R 10.13190/j.jbupt.2019-128
%J Journal of Beijing University of Posts and Telecommunications
%P 74-79
%V 43
%N 2
%X To solve the system performance degradation problem caused by the limited sounding reference signal (SRS) resources in time duplex division (TDD) massive multiple-input-multiple-output (MIMO) systems, based on the fact that the channel variant rates of various users are different, one metric that determines the sounding period is provided firstly, and then a pilot allocation scheme is given to expand the scheduling set, and finally a matched multiuser grouping scheme is introduced. Meanwhile, a 3-D MIMO channel model is used to verify the scheme. Simulations show that the system performance is effectively enhanced.
%U https://journal.bupt.edu.cn/EN/10.13190/j.jbupt.2019-128