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- W2165586809 abstract "We study selective digital relaying schemes where the relay may choose to retransmit or to remain silent based on the qualities of the links between the source, relay and the destination. We first analyze a baseline scheme, called static relaying, where the relaying decisions are based only on the average signal-to-noise ratio (SNR) values of all the links. The second scheme, dynamic relaying, allows the relay to make decisions based on the instantaneous SNR of the source-relay link and average SNRs of the relay-destination and source-destination links. We show that, in dynamic relaying the optimal strategy to minimize the average end-to-end bit error rate is a threshold rule on the instantaneous SNR of the source-relay channel. In this case, the optimal threshold value is a function of average SNR of relay-destination and source-destination channels. We derive closed-form expressions for the optimal threshold and the bit error performance achieved by this threshold. We show that dynamic relaying can provide significant performance advantage over static relaying." @default.
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- W2165586809 date "2007-01-01" @default.
- W2165586809 modified "2023-09-30" @default.
- W2165586809 title "Optimum Threshold for SNR-Based Selective Digital Relaying Schemes in Cooperative Wireless Networks" @default.
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- W2165586809 doi "https://doi.org/10.1109/wcnc.2007.184" @default.
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