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Power-limited Cooperative Diversity with Selection Combining in Rayleigh Fading for Wireless Ad-hoc Networks  

Kim Nam-Soo (Dept. of Computer and Communication Engineering, Cheongju University)
Lee Ye-Hoon (Dept. of Electronic and Information, Seoul National University of Technology)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.31, no.8A, 2006 , pp. 769-774 More about this Journal
Abstract
Based on the performance of a cooperative diversity with selection combining in Rayleigh fading, the power control range of a relay node is investigated. Also the effect of the power-limited relay node to the system performance is investigated. If the average signal-to-noise ratio(SNR) of each signal path is equal, the single relay cooperative diversity is obtained 13.5dB gain at the outage probability of $1{\times}10^{-3}$ in Rayleigh fading. We noticed that the limited power of a relay node severely degrades the system performance. Therefore the node with limited power in ad-hoc network is not recommended as a relay node in cooperative diversity system.
Keywords
Cooperative diversity; Relay Network; Selection combining;
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