Journal of Beijing University of Posts and Telecommunications

  • EI核心期刊

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2008, Vol. 31 ›› Issue (2): 68-71.doi: 10.13190/jbupt.200802.68.gaowd

• Papers • Previous Articles     Next Articles

Joint Relay Selection and Power Allocation Optimization in Cooperative Communications

GAO Wei-dong,WANG Wen-bo,YUAN Guang-xiang,PENG Mu-gen   

  1. Key Laboratory of Universal Wireless Communication, Ministry of Education,Beijing University of Posts and Telecommunications, Beijing 100876,China
  • Received:2007-06-13 Revised:1900-01-01 Online:2008-04-28 Published:2008-04-28
  • Contact: GAO Wei-dong

Abstract:

A joint optimization strategy for relay selection and power allocation is proposed to optimize the performance of cooperative communication system. Convex optimization method is used to implement the algorithm, which optimally distributes power among the source and relay nodes. Both theoretical analysis and simulation results indicate that the proposed strategy notably improve system performance and energy efficiency with low implementing complexity, thus can be effectively used in cooperative communications based on relaying transmission.

Key words: cooperative communication, relay selection, power allocation, convex optimization

CLC Number: