SPECTRUM HANDOFF IN COGNITIVE RADIO WITH FUZZY LOGIC CONTROL  

作　　者：Tang Wanbin Peng Dong 

机构地区：[1]National Communication Laboratory,University of Electronic Science and Technology of China, Chengdu 611731,China

出　　处：《Journal of Electronics(China)》2010年第5期708-714,共7页电子科学学刊（英文版）

基　　金：Supported by the High-Tech Research and Development Program (863 Program) of China (No. 2009AA011801 and 2009AA012002);the National Fundamental Research Program of China (No. A1420080150);the National Basic Research Program (973 Program) of China (No. 2009CB320405);National Grand Special Science and Technology Project of China (No. 2008ZX03005-001, No. 2009ZX03007-004, No. 2009ZX03005-002, No. 2009ZX 03005-004, No. 2010ZX03006-002-02);the Foundation Project of National Key Laboratory of Science and Technology on Communications (No. 9140C0202061004);Special Project on Broadband Wireless Access sponsored by Huawei co., ltd

摘　　要：The secondary usage of spectrum has been investigated in Cognitive Radio(CR) network to resolving the spectrum scarcity issue in wireless communication.When Primary Users(PU) who own the spectrum appear,spectrum handoff is needed to maintain the communications of Secondary Users.But the decision making of spectrum handoff is a challenge issue for CR network,because the input of decision making,which obtain through spectrum sensing,is heterogeneous and inexact.In this paper we will use fuzzy logic control theory to solve this issue and make use of new information for handoff operation:the probability of PU's occupancy at a certain channel.Our new algorithm can make more intelligent decision compared to simple traditional spectrum handoff decision making and reduce the probability of spectrum handoff,also the performance of SU's communication can be enhanced.The secondary usage of spectrum has been investigated in Cognitive Radio（CR） network to resolving the spectrum scarcity issue in wireless communication.When Primary Users（PU） who own the spectrum appear,spectrum handoff is needed to maintain the communications of Secondary Users.But the decision making of spectrum handoff is a challenge issue for CR network,because the input of decision making,which obtain through spectrum sensing,is heterogeneous and inexact.In this paper we will use fuzzy logic control theory to solve this issue and make use of new information for handoff operation：the probability of PU＇s occupancy at a certain channel.Our new algorithm can make more intelligent decision compared to simple traditional spectrum handoff decision making and reduce the probability of spectrum handoff,also the performance of SU＇s communication can be enhanced.

关 键 词：Cognitive Radio (CR) Spectrum handoff Fuzzy logic control 

分 类 号：TN92[电子电信—通信与信息系统]