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- W2103227972 abstract "A wireless network is considered where a source is communicating with a remote destination, and where a relay terminal is occasionally present in close proximity to the source but without the source's knowledge. The channel source-relay is assumed fixed due to the short distance, while the channels source-destination and relay-destination are affected by block flat Rayleigh fading, where channel state information is known only to respective receivers. <i xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>Oblivious</i> cooperative protocols are addressed which improve performance when the relay is present and do not degrade it when the relay is absent-and all this while the source is uninformed of the actual topology. Using the expected throughput as a performance measure, several such protocols based on decode-and-forward and quantize-and-forward are proposed for this network. It turns out that block Markov decode-and-forward (BMDF) with appropriate decoding is in fact an oblivious cooperative protocol. The optimal correlation between the transmissions of the source and the relay in decode-and-forward and the corresponding optimum performance are characterized. Finally, quantize-and-forward is considered for rates which preclude the usage of decode-and-forward, and several schemes are proposed for incorporating partial side information in the relay's quantization." @default.
- W2103227972 created "2016-06-24" @default.
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- W2103227972 date "2009-11-01" @default.
- W2103227972 modified "2023-10-03" @default.
- W2103227972 title "Cooperative Schemes for a Source and an Occasional Nearby Relay in Wireless Networks" @default.
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- W2103227972 doi "https://doi.org/10.1109/tit.2009.2030521" @default.
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