On Uplink Non-Orthogonal Multiple Access for 5G:Opportunities and Challenges

被引：0
|
作者：
Li Tian [1 ]
Chunlin Yan [1 ]
Weimin Li [1 ]
Zhifeng Yuan [1 ]
Wei Cao [1 ]
Yifei Yuan [1 ]
机构：
[1] ZTE Corporation
来源：
China Communications | 2017年 / 14卷 / 12期
关键词：
5G New Radio; non-orthogona multiple access; grant-free transmission;
D O I：
暂无
中图分类号：
TN929.5 [移动通信];
学科分类号：
080402 ; 080904 ; 0810 ; 081001 ;
摘要：
In this paper,the concept of grantfree non-orthogonal multiple access(NOMA) for uplink data transmission is elaborated.NOMA in combination with grant-free can be applied to ultra reliability low latency communication(URLLC),massive machine type communication(m MTC),enhanced mobile broadband(e MBB) small packet and two-step random-access channel(RACH) scenarios.The advantages of grant-free NOMA are low latency and signaling overhead,high access capability and efficient resource utilization.Candidate uplink NOMA schemes are summarized and preliminary comparison among a subset of schemes are presented.Furthermore,design aspects for grant-free NOMA are discussed,with special notes on particular issues such as blind UE identification and transmitter/receiver(Tx/Rx) impairments in realistic deployment.
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页码：142 / 152
页数：11
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