DETECTION OF PILOT-HOPPING SEQUENCES FOR GRANT-FREE RANDOM ACCESS IN MASSIVE MIMO SYSTEMS

被引：0
|
作者：
Becirovic, Ema [1 ]
Bjornson, Emil [1 ]
Larsson, Erik G. [1 ]
机构：
[1] Linkoping Univ, Dept Elect Engn, Linkoping, Sweden
来源：
2019 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH AND SIGNAL PROCESSING (ICASSP) | 2019年
基金：
瑞典研究理事会;
关键词：
massive MIMO; machine type communication; compressed sensing; SPARSE RECOVERY; CONNECTIVITY;
D O I：
暂无
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
In this paper, we study an active user detection problem for massive machine type communications (mMTC). The users transmit pilot-hopping sequences and detection of active users is performed based on the received energy. We utilize the channel hardening and favorable propagation properties of massive multiple- input multipleoutput (MIMO) to simplify the user detection. We propose and compare a number of different user detection methods and find that using non- negative least squares (NNLS) is well suited for the task at hand as it achieves good results as well as having the benefit of not having to specify further parameters.
引用
收藏
页码：8380 / 8384
页数：5
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