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Volume 32 Issue 6
Jun.  2010
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Jiang Ruo-yi, Ji Wei, Zheng Bao-yu. Joint Optimization of Energy Consumption in Cooperative Wireless Sensor Networks[J]. Journal of Electronics & Information Technology, 2010, 32(6): 1475-1479. doi: 10.3724/SP.J.1146.2009.00521
Citation: Jiang Ruo-yi, Ji Wei, Zheng Bao-yu. Joint Optimization of Energy Consumption in Cooperative Wireless Sensor Networks[J]. Journal of Electronics & Information Technology, 2010, 32(6): 1475-1479. doi: 10.3724/SP.J.1146.2009.00521

Joint Optimization of Energy Consumption in Cooperative Wireless Sensor Networks

doi: 10.3724/SP.J.1146.2009.00521
  • Received Date: 2009-04-10
  • Rev Recd Date: 2010-02-09
  • Publish Date: 2010-06-19
  • In this paper, the optimum numbers of cooperative nodes and modulation methods are analyzed to minimize the total energy consumption in a cooperative wireless sensor networks, which is power-limited. An exact closed-form expression is derived for the average BER in Rayleigh-fading channels for both BPSK and MQAM modulations, and then the energy of cooperative system is analyzed. Finally a synthetic optimization of modulation and number of cooperative nodes is presented to minimize the total energy consumption. Comparisons with the fix-rate or fix numbers of cooperative nodes systems demonstrate the significant energy saving of the synthetic optimization.
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