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Performance Analysis of Energy-Efficiency of Non-Coherent Cooperative Relays for Wireless Sensor Networks  

Kwon, Eun-Mi (Dept. of Electronics Engineering, Ewha Womans University)
Kim, Jeong-Ho (Dept. of Electronics Engineering, Ewha Womans University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.49, no.5, 2012 , pp. 66-71 More about this Journal
Abstract
The capacity criteria have been proposed in order to select a cooperative relay node in WSNs, under the environment where direct path has a poor link gain. This process may ensure the efficiency improvement of signal transfer between source and destination and reduction of energy consumption as well. Two criteria are incorporated to select a cooperative relay node. Firstly, calculate the energy gain ratio between the relay path and the direct path. These are defined as the ratio between the energy factors of 1/g and 1/B. Each stands for an inverse of direct path gain and relay path gain. Secondly, investigate the effects of relay node's usage in WSNs through the simulation in terms of energy consumption. In conclusion, using a selected cooperative relay node based on the selected criteria is effective in terms of both energy efficiency and capacity of WSNs especially when direct path gain is relatively low.
Keywords
Energy Efficiency; Wireless Sensor Networks; Non-Coherent; Cooperative Relays;
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Times Cited By KSCI : 2  (Citation Analysis)
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