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Impact of User Pairing on 5G Nonorthogonal Multiple-Access Downlink Transmissions

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成果类型:
期刊论文
作者:
Ding, Zhiguo*;Fan, Pingzhi;Poor, H. Vincent
通讯作者:
Ding, Zhiguo
作者机构:
[Fan, Pingzhi] Southwest Jiaotong Univ, Inst Mobile Commun, Chengdu 610031, Peoples R China.
[Ding, Zhiguo; Poor, H. Vincent] Princeton Univ, Dept Elect Engn, Princeton, NJ 08544 USA.
[Ding, Zhiguo] Univ Lancaster, Sch Comp & Commun, Lancaster LA1 4WA, England.
通讯机构:
[Ding, Zhiguo] Princeton Univ, Dept Elect Engn, Princeton, NJ 08544 USA.
语种:
英文
关键词:
Channel conditions - Cognitive radio network - Enabling technologies - Fixed power allocations - Multiple access - Multiple access downlink - Outage probability - Power allocations
期刊:
IEEE Transactions on Vehicular Technology
ISSN:
0018-9545
年:
2016
卷:
65
期:
8
页码:
6010-6023
文献类别:
WOS:Article;EI:Journal article (JA)
所属学科:
ESI学科类别:工程学;WOS学科类别:Engineering, Electrical & Electronic;Telecommunications;Transportation Science & Technology
入藏号:
WOS:000381446200014;EI:20163502753054
基金类别:
Engineering and Physical Sciences Research Council of U.K. [EP/L025272/1]; National Natural Science Foundation of China [61471302]; 111 Project of China [111-2-14]; U.S. National Science Foundation [CNS-1456793, ECCS-1343210]
机构署名:
本校为其他机构
院系归属:
信息科学与技术学院
摘要:
Nonorthogonal multiple access (NOMA) represents a paradigm shift from conventional orthogonal multiple-access (MA) concepts and has been recognized as one of the key enabling technologies for fifth-generation mobile networks. In this paper, the impact of user pairing on the performance of two NOMA systems, i.e., NOMA with fixed power allocation (F-NOMA) and cognitive-radio-inspired NOMA (CR-NOMA), is characterized. For F-NOMA, both analytical and numerical results are provided to demonstrate that F-NOMA can offer a larger sum rate than orthogonal MA, and the performance gain of F-NOMA over conventional MA can be further enlarged by selecting users whose channel conditions are more distinctive. For CR-NOMA, the quality of service (QoS) for users with poorer channel conditions can be guaranteed since the transmit power allocated to other users is constrained following the concept of cognitive radio networks. Because of this constraint, CR-NOMA exhibits a different behavior compared with F-NOMA. For example, for the user with the best channel condition, CR-NOMA prefers to pair it with the user with the second best channel condition, whereas the user with the worst channel condition is preferred by F-NOMA. ©1967-2012 IEEE.
参考文献:
Al-Imari M, 2014, 2014 11TH INTERNATIONAL SYMPOSIUM ON WIRELESS COMMUNICATIONS SYSTEMS (ISWCS), P781, DOI 10.1109/ISWCS.2014.6933459
Choi J, 2015, IEEE T COMMUN, V63, P791, DOI 10.1109/TCOMM.2015.2394393
Choi J, 2014, IEEE COMMUN LETT, V18, P313, DOI 10.1109/LCOMM.2013.123113.132450
Cover T. M., 1991, ELEMENTS INFORM THEO
David H. A., 2003, ORDER STAT

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