Optimal Power Allocation for Finite Blocklength Cooperative NOMA With Coordinated Direct and Relay Transmission

被引：11
|
作者：
Yuan, Lei [1 ]
Yang, Nan [1 ]
Fang, Fang [2 ]
Du, Qiuyu [1 ]
Zheng, Zhi [1 ]
机构：
[1] Lanzhou Univ, Sch Informat Sci & Engn, Lanzhou 730000, Gansu, Peoples R China
[2] Univ Durham, Dept Engn, Durham DH1 3LE, England
来源：
IEEE WIRELESS COMMUNICATIONS LETTERS | 2022年 / 11卷 / 03期
关键词：
Signal to noise ratio; Decoding; Throughput; Resource management; NOMA; Relays; Fading channels; Cooperative non-orthogonal multiple access; coordinated direct and relay transmission; finite blocklength communications; NONORTHOGONAL MULTIPLE-ACCESS;
D O I：
10.1109/LWC.2021.3135299
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
In this letter, we study the power allocation problem of cooperative non-orthogonal multiple access (C-NOMA) systems with coordinated direct and relay transmission (CDRT) in the finite blocklength regime. The overall average effective throughput is used as a performance metric to optimize the power allocation of the C-NOMA system with CDRT over Rayleigh fading channels. Specifically, the closed-form expressions of average block error rates and effective throughputs for two users are derived. Then, we derive, for the first time, the optimal power allocation coefficients to maximize the overall average effective throughput at high signal-to-noise ratios. Finally, Monte Carlo simulations are used to verify the correctness of the theoretical analysis.
引用
收藏
页码：523 / 527
页数：5
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