Outage Performance of Cooperative Underlay CR-NOMA With Imperfect CSI

被引：122

作者：

Arzykulov, Sultangali ^{[1
]}

Tsiftsis, Theodoros A. ^{[2
]}

Nauryzbayev, Galymzhan ^{[3
]}

Abdallah, Mohamed ^{[3
]}

机构：

[1] Nazarbayev Univ, Sch Engn, Astana 010000, Kazakhstan

[2] Jinan Univ, Sch Elect & Informat Engn, Inst Phys Internet, Zhuhai 519010, Peoples R China

[3] Hamad Bin Khalifa Univ, Qatar Fdn, Coll Sci & Engn, Div Informat & Comp Technol, Doha, Qatar

来源：

IEEE COMMUNICATIONS LETTERS | 2019年 / 23卷 / 01期

关键词：

Cognitive radio (CR); decode-and-forward (DF); non-orthogonal multiple access (NOMA); outage probability (OP); NONORTHOGONAL MULTIPLE-ACCESS;

D O I：

10.1109/LCOMM.2018.2878730

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, a decode-and-forward cooperative underlay cognitive radio (CR) non-orthogonal multiple access (NOMA) network is studied. Exact closed-form expressions for the outage probability (OP) of two NOMA secondary destination users (U-1 and U-2) are derived in the case of imperfect channel state information. Then, we find optimal power allocation factors for different distances of U-1 to satisfy the OP fairness for both users. Moreover, the proposed system model shows the superiority of the CR-NOMA compared with cooperative orthogonal multiple access. The derived analytical expressions are corroborated through Monte Carlo simulations.

引用

页码：176 / 179

页数：4

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