Optimal energy-efficient power control for cognitive radio based on static and dynamic features of primary users  

作　　者：Ge Wendong Ji Hong Si Pengbo 

机构地区：[1]School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, P.R. China [2]School of Electronics Information and Control Engineering, Beijing University of Teclmology, Beijing 100022, P.R.China

出　　处：《High Technology Letters》2011年第4期350-353,共4页高技术通讯（英文版）

基　　金：the National Natural Science Foundation of China，Beijing Municipal Natural Science Foundation，the Key Project of Ministry of Industry and Information Technology，the National Youth Science Foundation

摘　　要：In this paper, the energy-efficient power control problem in cognitive radio （CR） networks is studied not only to provide energy-efficient transmission, but also to guarantee the normal operation of primary users （PUs）. Moreover, the static energy-efficient power control （SEPC） algorithm is proposed in static scenario to maximize the capacity of secondary users （SUs） and to reduce the power consumption according to the interference from PU to SU. Furthermore, based on the analysis of PU＇s dynamic feature with Markov chain and SEPC algorithm,the dynamic energy-efficient power control （DEPC） algorithm is proposed taking into account the probability of detection and false alarm caused by sensing errors. Extensive simulation results show that the performance of the proposed algorithms is significantly improved compared with the existing algorithm.

关 键 词：cognitive radio（CR） power control ENERGY-EFFICIENT MARKOV false alarm 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置] TN929.533[自动化与计算机技术—控制科学与工程]