中文

Journal of Shanghai University（Natural Science Edition） ›› 2007, Vol. 13 ›› Issue (6): 696-698 .

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Energy Efficiency of STBC-Encoded Cooperative Transmission-System in Wireless Sensor Networks

YU Jie,CHEN Hui-min,JIN Yan-liang   

  1. School of Communication and Information Engineering, Shanghai University, Shanghai 200072, China

  • Received:2007-09-29 Revised:1900-01-01 Online:2007-12-20 Published:2007-12-20
  • Contact: CHEN Hui-min

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Abstract:

STBCencoded cooperative transmission system in wireless sensor networks and its energy efficiency are investigated. A criterion for performance comparison between STBCencoded cooperative transmission and single transmission is proposed. The threshold of transmit power in cooperative transmission is calculated for energylimited wireless sensor networks. Simulation results demonstrate that the proposed threshold of transmitted power can minimize the overall networktransmission power with a certain outage probability.

Key words: cooperative transmission, outage probability, STBC, wireless sensor networks