Distributed Power Control Algorithm in Orthogonal Frequency Division Multiple Cognitive Radio Systems for Fading Channel

International journal of online engineering

Feng Qi¹  Lingling Chen² 

[1] College of Information and Control Engineering, Jilin Institute of Chemical Technology, Jilin, Jilin, 130022, China;College of Information and Control Engineering, Jilin Institute of Chemical Technology, Jilin, Jilin, 130022, ChinaKey Laboratory of Information Science, College of Communication Engineering, Jilin University, Changchun, Jilin, 130012, China

关键词: Cognitive radio networks;    distributed power control algorithm;    convex optimization theory;   

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 】

In order to guarantee the quality of service (QoS) for primary users (PUs) and secondary users (SUs) in fading channel, a distributed power control algorithm is proposed based on convex optimization theory in underlay OFDM cognitive radio networks (CRNs). Our purpose obtains the maximum transmit data rate of each SU at all subcarriers under three constraints of the maximum allowable transmission power, the minimum signal to interference plus ratio (SINR) of each SU and the maximum allowable interference generated from SUs to PU at each subcarrier. Simulation results show that the performance of the proposed algorithms (m2) are superior to the geometric programming algorithm (m1) in fading channel environment.

【 授权许可】

Unknown