摘要
We try to extend the current configuredgrant(CG)uplink scheme in 5G New Radio(NR)to support massive potential users and study activity detection under this scenario.Characteristics of the continuously varying channel and the multiple repetition scheme are utilized to improve the detection accuracy,which can be an enhancement to existing activity detection algorithms.Numerical results under 3 GPP TDL(Tapped Delay Line)fading channel show the superiority of our algorithm.And system-level simulation reveals that enhancements on activity detection can improve reliability and reduce latency.
基金
supported in part by the Key Research and Development Program of China under Grant 2018YFB1801102
in part by the National Natural Science Foundation of China under Grant 61631013
in part by the Foundation for Innovative Research Groups of the National Natural Science Foundation of China under Grant 61621091
in part by the Civil Aerospace Technology Project under Grant D040202
in part by the Tsinghua-Qualcomm Joint Project
in part by the Tsinghua University Initiative Scientific Research Program under Grant 20193080005。
