An opportunistic relay selection based on instantaneous knowledge of channels is considered to increase security against eavesdroppers. The closed-form expressions are derived for the average secrecy rates and the outage probability when the cooperative networks use Decode-and-Forward (DF) or Amplify-and-Forward (AF) strategy. These techniques are demonstrated analytically and with simulation results.
@article{arxiv.1004.1277,
title = {Closed-Form Expressions for Relay Selection with Secrecy Constraints},
author = {Xiaojun Sun and Chunming Zhao and Ming Jiang},
journal= {arXiv preprint arXiv:1004.1277},
year = {2010}
}