Energy Efficient Cooperative Communication in Wireless Network

In cooperative wireless networks, it is often the case that multiple sources and multiple relays cooperate to transmit their data to destination. For the cooperative systems, selecting an appropriate relay node is of prime importance. The algorithm, namely greedy and exchange algorithm, is used for relay selection. It aims to minimize the total transmission power in the multi source and multi relay wireless networks in which one source has only one partner to help for information transmission. Later on, based on the analysis and the mechanism used in GAEA, an alternative version of GAEA will be provided, that enhances the algorithm for more optimized result. Parametric relay selection aims to minimize the bit error rate and outage probability and to maximize the data rate, in single source and multi relay wireless networks by using single relay selection and multiple relay selection.