Journal of Communications and Networks

  • 제15권5호
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  • Pages.457-463
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  • 2013
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  • 1229-2370(pISSN)
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  • 1976-5541(eISSN)
한국통신학회 (The Korean Institute of Commucations and Information Sciences)
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A New Physical Layer Transmission Scheme for LPI and High Throughput in the Cooperative SC-FDMA System

  • Li, Yingshan (Department of Communication engineering, College of Electronic Information and Optical Engineering, Nankai University) ;
  • Wu, Chao (Department of Communication engineering, College of Electronic Information and Optical Engineering, Nankai University) ;
  • Sun, Dongyan (Department of Communication engineering, College of Electronic Information and Optical Engineering, Nankai University) ;
  • Xia, Junli (Department of Communication engineering, College of Electronic Information and Optical Engineering, Nankai University) ;
  • Ryu, Heung-Gyoon (Department of Electronic Engineering, Chungbuk National University)
  • 투고 : 2012.07.03
  • 심사 : 2013.07.11
  • 발행 : 2013.10.31
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초록

In recent days, cooperative diversity and communication security become important research issues for wireless communications. In this paper, to achieve low probability of interception (LPI) and high throughput in the cooperative single-carrier frequency division multiple access (SC-FDMA) system, a new physical layer transmission scheme is proposed, where a new encryption algorithm is applied and adaptive modulation is further considered based on channel state information (CSI). By doing so, neither relay node nor eavesdropper can intercept the information signals transmitted from user terminal (UT). Simulation results show above new physical layer transmission scheme brings in high transmission safety and secrecy rate. Furthermore, by applying adaptive modulation and coding (AMC) technique according to CSI, transmission throughput can be increased significantly. Additionally, low peak-to-average power ratio (PAPR) characteristic can still be remained due to the uniform distribution of random coefficients used for encryption algorithm.

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참고문헌

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