{"title":"A cognitive two-way relay transmission scheme based on adaptive QAM and wireless network coding","authors":"Ke Ke, Yixi Xie, Yongjie Liu, Chao Hua","doi":"10.1109/NTMS.2015.7266462","DOIUrl":null,"url":null,"abstract":"In this paper, we investigate a cognitive radio network design for the Two-way Relay (TWR) Channel, relying on the combination of Adaptive Quadrature amplitude modulation (AQAM) and network coding technique. More explicitly, we extend the AQAM in peer-to-peer transmission scenario to the downlink design of Decode-and-Forward Two-way Relaying (DF-TWR) scenario. On the basis of the bit-error-ratio (BER) bounds, joint power and rate adaptive QAM with network coding scheme is proposed for the purpose of improving the throughput of the relaying system. In addition, Network-coded-aided QAM suffers a modest SNR loss due to the direct current (DC) bias, which will be derived in detail in this paper. Simulation results indicate that our proposed adaptive Network-coded-aided QAM scheme hold the potential of improving the throughput of TWR network, compared to the scheme without adaptation.","PeriodicalId":115020,"journal":{"name":"2015 7th International Conference on New Technologies, Mobility and Security (NTMS)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2015-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2015 7th International Conference on New Technologies, Mobility and Security (NTMS)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/NTMS.2015.7266462","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 3
Abstract
In this paper, we investigate a cognitive radio network design for the Two-way Relay (TWR) Channel, relying on the combination of Adaptive Quadrature amplitude modulation (AQAM) and network coding technique. More explicitly, we extend the AQAM in peer-to-peer transmission scenario to the downlink design of Decode-and-Forward Two-way Relaying (DF-TWR) scenario. On the basis of the bit-error-ratio (BER) bounds, joint power and rate adaptive QAM with network coding scheme is proposed for the purpose of improving the throughput of the relaying system. In addition, Network-coded-aided QAM suffers a modest SNR loss due to the direct current (DC) bias, which will be derived in detail in this paper. Simulation results indicate that our proposed adaptive Network-coded-aided QAM scheme hold the potential of improving the throughput of TWR network, compared to the scheme without adaptation.
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