Optimal Transceiver Design for Interference Alignment Based Cognitive Radio Networks

被引：35

作者：

Men, Hongzhi ^{[1
]}

Zhao, Nan ^{[1
]}

Jin, Minglu ^{[1
]}

Kim, Jae Moung ^{[2
,3
]}

机构：

[1] Dalian Univ Technol, Sch Informat & Commun Engn, Dalian 116024, Peoples R China

[2] Inha Univ, Smart Spectrum Engn Res Ctr SSE ITRC, Inchon 402751, South Korea

[3] Inha Univ, Dept Informat & Commun Engn, Inchon 402751, South Korea

来源：

IEEE COMMUNICATIONS LETTERS | 2015年 / 19卷 / 08期

基金：

中国国家自然科学基金;

关键词：

Cognitive radio; interference alignment; quality of service; rayleigh quotient; spectrum sharing;

D O I：

10.1109/LCOMM.2015.2442243

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

Interference alignment (IA) can effectively eliminate the interference among users in cognitive radio (CR) networks. Nevertheless, to further increase the transmission rate of the primary user (PU) and guarantee its priority, we propose an optimal transceiver design (OTD) scheme for IA-based CR networks in this letter. In the OTD scheme, two partial-IA based algorithms are proposed to design the precoding matrices of SUs, in which the interference is aligned at the primary receiver with much lower overhead and complexity. Then the PU's precoding matrix is designed to maximize its throughput accordingly. To further improve the performance of SUs, their decoding matrices are re-designed. Simulation results are presented to show the effectiveness of the proposed scheme.

引用

页码：1442 / 1445

页数：4

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