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

电子科技 ›› 2020, Vol. 33 ›› Issue (7): 37-40.doi: 10.16180/j.cnki.issn1007-7820.2020.07.008

非正交多址接入系统中的联合中继选择和用户配对算法

吴春林¹,李慧芳²,李靖²

1.海军航空大学青岛校区,山东青岛 266041
2.beoplay体育提现综合业务网理论及关键技术国家重点实验室,陕西西安 710071

收稿日期:2019-05-09 出版日期:2020-07-15 发布日期:2020-07-15
作者简介:吴春林(1975-),男,讲师。研究方向:信息处理、雷达工程指挥及高教研究。
基金资助:
国家自然科学基金(61771367)

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

WU Chunlin¹,LI Huifang²,LI Jing²

1. Qingdao Campus,Naval Aeronautical University,Qingdao 266041,China
2. State Key Laboratory of Integrated Services Networks,Xidian University,Xi’an 710071, China

Received:2019-05-09 Online:2020-07-15 Published:2020-07-15
Supported by:
National Natural Science Foundation of China(61771367)

摘要/Abstract

摘要：

针对多用户NOMA中继系统,文中提出了一种联合中继选择和用户配对算法。该算法首先利用最小距离准则选择最优次级用户与主用户配对,然后进行最优中继选择来改善系统中断性能。根据系统模型的分析,推导了系统中断概率的准确表达式,并分析了高信噪比条件下的渐近中断性能。系统分集阶数的研究说明了所提NOMA中继系统相比于传统单中继NOMA系统的优越性。最后,蒙特卡洛仿真结果验证了理论分析的正确性。

关键词: NOMA, 中继选择, 用户配对, 中断概率, 蒙特卡洛仿真, 分集阶数

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

中图分类号:

TN925

吴春林,李慧芳,李靖. 非正交多址接入系统中的联合中继选择和用户配对算法[J]. 电子科技, 2020, 33(7): 37-40.

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.

图/表 3

参考文献 21

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非正交多址接入系统中的联合中继选择和用户配对算法

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

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