{"title":"Optimal power allocation for secure multi-carrier relay systems","authors":"Cheol Jeong, Il Kim","doi":"10.1109/MC-SS.2011.5910728","DOIUrl":null,"url":null,"abstract":"We study the multi-carrier decode-and-forward relay communication system, where an eavesdropper exists. The source power and relay power are optimized over all subcarriers to maximize the sum secrecy rate under a total system power constraint. From the power allocation result, an optimal transmission strategy is determined among no transmission, direct transmission, and relay transmission on each subcarrier. In numerical results, the performance of the optimal power allocation is evaluated and compared for various scenarios.","PeriodicalId":251147,"journal":{"name":"2011 8th International Workshop on Multi-Carrier Systems & Solutions","volume":"78 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2011-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"19","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2011 8th International Workshop on Multi-Carrier Systems & Solutions","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/MC-SS.2011.5910728","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 19
Abstract
We study the multi-carrier decode-and-forward relay communication system, where an eavesdropper exists. The source power and relay power are optimized over all subcarriers to maximize the sum secrecy rate under a total system power constraint. From the power allocation result, an optimal transmission strategy is determined among no transmission, direct transmission, and relay transmission on each subcarrier. In numerical results, the performance of the optimal power allocation is evaluated and compared for various scenarios.
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