Order-Statistics-Based Relay Selection for Uplink Cellular Networks

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In this paper, the authors address the relay assignment in cooperative networks based on order statistics. They consider a network comprising a cluster of transmitting sources, a cluster of relay nodes and a single destination. This is motivated by the fact that the existing relay assignment schemes don't achieve diversity for the network configuration under consideration. They assume that the cooperation is in the Amplify-and-Forward (AF) mode, but proposed scheme is applicable to the Decode-and-Forward (DF) mode. In the relay assignment process, the source nodes that have weaker source-destination links, have higher priority in relay selection.