Joint Beamforming and Power Allocation in Cognitive Radio via Feedback

被引：0

作者：

Bai, Jun ^{[1
]}

Wang, Jing ^{[1
]}

Yang, Bin ^{[2
]}

机构：

[1] Xian Univ Sci & Technol, Dept Commun & Informat Engn, Xian, Peoples R China

[2] Beijing Inst Technol, Dept Informat & Elect, Beijing, Peoples R China

来源：

2015 IEEE International Conference on Signal Processing, Communications and Computing (ICSPCC) | 2015年

关键词：

Cognitive radio; beamforming; power allocation; cooperation feedback; local feedback; random vector quantization; game theory; CHANNEL STATE INFORMATION; LIMITED FEEDBACK; CONTROL GAME; NETWORKS;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this paper, joint beamforming and power allocation via cooperation feedback and local feedback is considered in cognitive radio (CR) downlink where primary user (PU) coexists with multiple secondary users (SUs). The objective is to maximize the sum-rate of SUs while satisfying interference power constraint to PU and the total transmission power constraint of SUs. To effectively mitigate the interference to the PU, the zero-forcing (ZF) beamforming is designed at secondary transmitter (ST) based on quantized feedback channel state information (CSI). For power allocation, we introduce a game approach based on statistical analysis of the quantization error and propose an iterative distributed algorithm. Moreover, the existence of Nash equilibrium (NE) is analyzed. Simulation results demonstrate the effectiveness of the proposed scheme.

引用

页码：650 / 654

页数：5

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