Analysis on Decentralized Adaptive Route Selection in Cooperative Relaying Networks

In this paper, the performance of decentralized adaptive route selection problem in cooperative relaying networks in which each source independently chooses a route to enhance its own throughput is studied. Cooperative relaying is a new technique to enhance spectral efficiency by using multiple stations. However, when multiple stations transmit simultaneously, it also increases the number of interference signals. For this reason, if each source independently and selfishly transmits, it is not clear whether cooperative relaying always increases the network capacity. In order to investigate the capacity of cooperative relaying under the decentralized adaptive route selection, the game-theoretic approach is applied. Simulation results reveal that the introduction of the cooperative relaying always increases the capacity under centralized control, however that it may reduce the capacity under decentralized control due to the increase in the number of interference signals.