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CHEN Dan, JI Hong. Distributed optimal relay selection for spectral efficiency improvement in underlay-paradigm based cognitive radio networks[J]. JOURNAL OF BEIJING INSTITUTE OF TECHNOLOGY, 2012, 21(1): 106-111.
Citation: CHEN Dan, JI Hong. Distributed optimal relay selection for spectral efficiency improvement in underlay-paradigm based cognitive radio networks[J].JOURNAL OF BEIJING INSTITUTE OF TECHNOLOGY, 2012, 21(1): 106-111.
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Distributed optimal relay selection for spectral efficiency improvement in underlay-paradigm based cognitive radio networks

  • Key Laboratory of Universal Wireless Communications, Ministry of Education, Beijing University of Posts and Telecommunications, Beijing 100876, China

  • Received Date:2010-11-03
    Abstract
  • A distributed best-relay node selection scheme is investigated for cooperative communications with adaptive modulation and coding (MAC) strategy over underlay-paradigm based cognitive radio (CR) networks. The scheme aims to maximize the average spectral efficiency and meanwhile to guarantee that the primary link is provided with a minimum-rate for a certain percentage of time. Simulation results demonstrate that the proposed scheme can significantly improve the spectral efficiency compared with other existing schemes.
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