A Mobility Support and Load Reducing Partner Selection Criterion in Cooperative Communication

Partner selection is a critical process for maximizing the effect of spatial diversity in cooperative communications. Most studies have proposed to select a partner node with best received SNR. These algorithms can achieve maximum system throughput in practical cooperative environment, but incur frequent coupling which leads additional system load, such as power consumption and data transmission delay. Furthermore, mobility of nodes, which causes Doppler shift of received signals, is not generally considered. In this paper, we propose a novel partner selection criterion which takes both SNR and mobility into account. Our simulation results show that the proposed algorithm keeps high system throughput, while minimizing system load.