A Robust Distributed Power Control Algorithm for Minimum Interference to Primary Users in Underlay Cognitive Radio Networks

International Association of Online Engineering

Xiaohui Zhao¹  Lingling Chen²  Xiaoyue Gong²  Yueliang Lu²  Xingquan Gao²  Shubei Sun² 

[1] College of Communication Engineering, Jilin University, Jilin, China;College of Information and Control Engineering, Jilin Institution of Chemical Technology, Jilin, China

关键词: cognitive radio networks;    robust distributed power control (RDPC);    worst case condition;   

DOI  :  

学科分类：社会科学、人文和艺术（综合）

来源: International Association of Online Engineering

【 摘 要 】

A robust distributed optimal power control (RDPC) scheme under worst case condition is proposed to make primary users (PUs) receive minimum interference generated from all secondary users (SUs) in underlay cognitive radio networks (CRNs). The strategy considers the transmit power of each SU below the maximum allowable power of the devices and interference plus noise ratio (SINR) of each SU under the minimum threshold. Simulation illustrate thatthe RDPC can lead SUs to reduce the interference to PUs, and simultaneously the better meet quality of service (QoS) requirement of SUs in comparison with the distributed power control algorithm (DPC) and the traditional iterative water filling algorithm (IWFA) in time-varying channel environment.

【 授权许可】

Unknown