Dynamic Decode-and-Forward Based Cooperative NOMA With Spatially Random Users

doi:10.1109/TWC.2018.2810083

	Dynamic Decode-and-Forward Based Cooperative NOMA With Spatially Random Users
	Yong Zhou1,2 ; Vincent W.S. Wong 2; Robert Schober 3
	2018-05-01
发表期刊	IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS
ISSN	1558-2248
卷号	17 期号:5
DOI	10.1109/TWC.2018.2810083
摘要	Non-orthogonal multiple access (NOMA) is a promising spectrally-efficient multiple access technique for the fifth generation (5G) wireless networks. In this paper, we propose a dynamic decode-and-forward (DDF) based cooperative NOMA scheme for downlink transmission with spatially random users. In DDF-based cooperative NOMA, the base station transmits the superposition of the signals intended for the paired NOMA users. The user closer to the base station forwards the signal intended for the far user as soon as it can successfully decode its own signal and the signal intended for the far user. We consider two user pairing strategies, namely random and distance-based user pairing, which require one-bit feedback and the users' distance information, respectively. For each user pairing strategy, we derive the outage probability of the proposed NOMA scheme by using tools from stochastic geometry. Furthermore, based on the obtained outage probability, we derive the diversity order and the sum rate of the paired NOMA users. Simulation results validate the analytical results and demonstrate that the proposed DDF-based cooperative NOMA scheme achieves a lower outage probability and a higher sum rate than orthogonal multiple access, conventional NOMA, and cooperative NOMA.
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收录类别	SCI ; SCIE ; EI
来源库	IEEE
引用统计
文献类型	期刊论文
条目标识符	https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/20843
专题	信息科学与技术学院信息科学与技术学院_PI研究组_周勇组
作者单位	1.School of Information Science and Technology, ShanghaiTech University, Shanghai, China 2.Department of Electrical and Computer Engineering, The University of British Columbia, Vancouver, BC, Canada 3.Institute for Digital Communications, Friedrich-Alexander University of Erlangen-Nuremberg, Erlangen, Germany
第一作者单位	信息科学与技术学院
第一作者的第一单位	信息科学与技术学院
推荐引用方式 GB/T 7714	Yong Zhou,Vincent W.S. Wong,Robert Schober. Dynamic Decode-and-Forward Based Cooperative NOMA With Spatially Random Users[J]. IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS,2018,17(5).
APA	Yong Zhou,Vincent W.S. Wong,&Robert Schober.(2018).Dynamic Decode-and-Forward Based Cooperative NOMA With Spatially Random Users.IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS,17(5).
MLA	Yong Zhou,et al."Dynamic Decode-and-Forward Based Cooperative NOMA With Spatially Random Users".IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS 17.5(2018).