非正交多址接入系统中的联合中继选择和用户配对算法

doi:10.16180/j.cnki.issn1007-7820.2020.07.008

Abstract

Abstract:

This paper proposed a joint relay selection and user pairing algorithm for the multi-user NOMA relay system. The algorithm firstly selected the best secondary user to pair with the primary user by using the shortest distance criterion and then performed the best relay selection to improve the system outage performance. According to the analysis of the system model, the system outage probability expression was derived in closed-form and the asymptotic outage expression was analyzed under high SNR regime. The derived system diversity order demonstrated the superiority of the proposed NOMA relay system compared to the traditional single-relay NOMA system. Finally, the correctness of theoretical analysis was validated by the Monte Carlo simulation results.

Key words: NOMA, relay selection, user pairing, outage probability, Monte Carlo simulation, diversity order

CLC Number:

TN925

WU Chunlin,LI Huifang,LI Jing. Joint Relay Selection and User Pairing for Non-Orthogonal Multiple Access Systems[J].Electronic Science and Technology, 2020, 33(7): 37-40.

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References 21

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Joint Relay Selection and User Pairing for Non-Orthogonal Multiple Access Systems

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