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Cognitive radios (CR) and cooperative communications represent new paradigms that both can effectively improve the spectrum efficiency of future wireless networks. In this paper, we investigate the problem of cooperative relay in CR networks for further improved network performance. The objective is to provide an analysis for the comparison of two representative cooperative relay strategies, decode...
Wireless infrastructure networks that provide ubiquitous connectivity to mobile nodes in metro areas are becoming increasingly popular. The nodes in such backbone networks are often equipped with multiple transceivers to allow for simultaneous transmissions in multiple non-overlapping channels. In this paper, we develop an analytical model for evaluating the throughput and delay performance of wireless...
Recent experimental results have shown that the minimum signal-to-interference ratio required at a receiver (CPth) depends on the order of arrivals of overlapping frames, and it is much less when the sender's frame arrives earlier. With such differentiating capture capable receivers, in this paper we reconsider the optimal choice for carrier sense range rs of wireless nodes. Through simple analysis...
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