Universiti Teknologi Malaysia Institutional Repository

Cooperative non-orthogonal multiple access with physical layer network coding

Chun, Yeen Ho and Chee, Yen Leow (2019) Cooperative non-orthogonal multiple access with physical layer network coding. IEEE Access, 7 . pp. 44894-44902. ISSN 2169-3536


Official URL: http://dx.doi.org/10.1109/ACCESS.2019.2908181


Physical layer network coding (PNC) has been proposed for information exchange between a pair of users assisted by a relay. However, the spectral efficiency of PNC reduces when the number of user pairs increases due to the requirement of orthogonal channels for multi-pair operation. This paper proposes the use of cooperative non-orthogonal multiple access (NOMA) and PNC to improve the spectral efficiency and outage performance of multi-pair information exchange. Specifically, a cognitive radio inspired NOMA is considered. The quality of service of the primary user pair is guaranteed through dynamic power allocation policy, while the secondary user pair is served on best effort basis. The simulation result shows that the proposed cognitive radio inspired NOMA scheme with PNC achieves higher spectral efficiency and better outage performance if compared with the existing orthogonal multiple access schemes with PNC.

Item Type:Article
Uncontrolled Keywords:cognitive radio (CR) NOMA, Non-orthogonal multiple access (NOMA)
Subjects:T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions:Electrical Engineering
ID Code:87690
Deposited By: Yanti Mohd Shah
Deposited On:30 Nov 2020 21:08
Last Modified:30 Nov 2020 21:08

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