Energy Efficient Precoder Design for Non-Regenerative MIMO-CRN

被引：6
|
作者：
Maurya, Shikha [1 ]
Bansal, Matadeen [1 ]
机构：
[1] PDPM Indian Inst Informat Technol Design & Mfg, Dept Elect & Commun Engn, Jabalpur 482005, India
来源：
IEEE WIRELESS COMMUNICATIONS LETTERS | 2017年 / 6卷 / 05期
关键词：
Energy efficiency; cognitive radio; MIMO; relay precoding matrix; augmented Lagrangian method; RELAY PRECODER; SYSTEMS;
D O I：
10.1109/LWC.2017.2726533
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
This letter presents a problem of designing a relay precoding matrix for a multi-input multi-output cognitive relay network, where a secondary system (SS) works in an underlay mode and communicates through a non-regenerative relay. An optimization problem is formulated to maximize the energy efficiency of the SS subject to a transmit power constraint and an interference constraint. An efficient scheme based on the fractional programming and augmented Lagrangian multiplier method is proposed to solve the resultant problem. Numerical results are provided to show the effectiveness of the proposed scheme.
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页码：646 / 649
页数：4
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