Аннотация

Cooperative diversity uses relays to assist source-destination transmissions to reduce link outage rates in multipath fading environments. In this paper, we model relay selection as a semi-Markov process to analyze the impact of relay selection overhead on throughput, delay, and jitter in a simple scenario. Results show that the selection overhead can significantly reduce benefits of reactive relay selection if data frames are small or only few nodes overhear the transmissions. Relaying with a preassigned relay can be more beneficial in such~cases.

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