Joint transceiver beamforming and power allocation in cognitive MIMO system

被引：0

作者：

Zhu, Wentao ^{[1
]}

Liu, Xu ^{[1
]}

机构：

[1] College of Telecommunication and Information Engineering, Nanjing University of Posts and Telecommunications, Nanjing

来源：

Journal of Computational Information Systems | 2014年 / 10卷 / 15期

关键词：

Beamforming; Cognitive Radio; Multiple Input Multiple Output; Power Location;

D O I：

10.12733/jcis11218

中图分类号：

学科分类号：

摘要：

Transceiver beamforming and power allocation for cognitive MIMO system are studied in this paper. In the cognitive MIMO system, both secondary users (SUs) and SU base station (SUB) are equipped with multiple antennas. Joint transceiver cognitive beamforming and power allocation design are introduced to minimize the transmit power of SUB to decrease the interference between primary users (PUs) and SUs. Both perfect channel state information (CSI) and imperfect CSI of links from PU base station (PUB) to SUs are discussed. The robust transceiver cognitive beamformer is modeled as a nonlinear non-convex optimization problem and an iterative algorithm is given to solve this problem. Simulation results show that the joint transceiver beamforming and power allocation algorithm not only can obtain the optimal total transmit power of SUB in the conditions of performance constraints of PUs and SUs, but also have superior convergence properties. © 2014 Binary Information Press

引用

页码：6677 / 6686

页数：9

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