Outage Performance for Satellite-Assisted Cooperative NOMA Systems With Coordinated Direct and Relay Transmission

被引：21

作者：

Li, Xunan ^{[1
]}

Chen, Yue ^{[1
]}

Xue, Ping ^{[2
]}

Lv, Guocheng ^{[2
]}

Shu, Min ^{[1
]}

机构：

[1] Natl Comp Network Emergency Response Tech Team, Coordinat Ctr China, Beijing 100029, Peoples R China

[2] Peking Univ, Sch Elect Engn & Comp Sci, Beijing 100871, Peoples R China

来源：

IEEE COMMUNICATIONS LETTERS | 2020年 / 24卷 / 10期

关键词：

NOMA; satellite; cooperation; outage performance; NONORTHOGONAL MULTIPLE-ACCESS;

D O I：

10.1109/LCOMM.2020.3004413

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

In this letter, the outage performance of a satellite-assisted cooperative non-orthogonal multiple access (NOMA) system is studied, where a terrestrial source communicates with one terrestrial destination directly while the other terrestrial destination is assisted by a regenerative satellite. We consider the satellite channels and the terrestrial channels undergo shadowed-Rician fading and Nakagami-m fading, respectively. Based on this, we derive the exact closed-form expressions for the outage probabilities. In addition, the asymptotic expressions at high signal-to-noise ratio are provided to gain further insights. Simulation results validate the accuracy of the analytical results and show the superiority over other conventional schemes.

引用

页码：2285 / 2289

页数：5

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