Design of Cooperative Non-Orthogonal Multicast Cognitive Multiple Access for 5G Systems:User Scheduling and Performance Analysis

Lv, Lu and Chen, Jian and Ni, Qiang and Ding, Zhiguo (2017) Design of Cooperative Non-Orthogonal Multicast Cognitive Multiple Access for 5G Systems:User Scheduling and Performance Analysis. IEEE Transactions on Communications, 65 (6). pp. 2641-2656. ISSN 0090-6778

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Abstract

Non-orthogonal multiple access (NOMA) is emerging as a promising, yet challenging, multiple access technology to improve spectrum utilization for the fifth generation (5G) wireless networks. In this paper, the application of NOMA to multicast cognitive radio networks (termed as MCR-NOMA) is investigated. A dynamic cooperative MCR-NOMA scheme is proposed, where the multicast secondary users serve as relays to improve the performance of both primary and secondary networks. Based on the available channel state information (CSI), three different secondary user scheduling strategies for the cooperative MCR-NOMA scheme are presented. To evaluate the system performance, we derive the closed-form expressions of the outage probability and diversity order for both networks. Furthermore, we introduce a new metric, referred to as mutual outage probability to characterize the cooperation benefit compared to non cooperative MCR-NOMA scheme. Simulation results demonstrate significant performance gains are obtained for both networks, thanks to the use of our proposed cooperative MCR-NOMA scheme. It is also demonstrated that higher spatial diversity order can be achieved by opportunistically utilizing the CSI available for the secondary user scheduling.

Item Type:
Journal Article
Journal or Publication Title:
IEEE Transactions on Communications
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/2200/2208
Subjects:
ID Code:
85576
Deposited By:
Deposited On:
16 Mar 2017 13:38
Refereed?:
Yes
Published?:
Published
Last Modified:
01 Oct 2020 01:55