Multi-pair bi-directional relay networks part II: outer bounds and cooperation
نویسندگان
چکیده
In part II of our investigation of the multi-pair bidirectional relay network which consists of one base-station, multiple (say m) terminal nodes and one relay, all of which operate in half-duplex modes we extend and enhance previously derived protocols to exploit over-heard side information through end-user cooperation. That is, each terminal node communicates with the base-station in a bi-directional fashion with the possible help of a relay and may help each other in decoding their messages using a compress-and-forward cooperation strategy. Our contributions in our part II investigation are: 1) the introduction of end-user cooperation in a multi-pair bi-directional relay network which is enabled through the compression of overheard signals, on top of the network coding and random binning schemes introduced in part I, 2) the derivation of a general achievable rate region for this cooperation strategy, and 3) numerical simulations which highlight the relative gains achieved by network coding, random binning and compress-and-forwardtype cooperation between terminal nodes.
منابع مشابه
Multi-pair bi-directional relay networks part I: protocols which exploit side-information
The multi-pair bi-directional relay network under consideration consists of one base-station, multiple (say m) terminal nodes and one relay, all of which are half-duplex, in which, contrary to prior work, each node has a direct link with every other node. Each of the m terminal nodes exchanges messages with the base-station in a bi-directional fashion, leading to 2m total messages to be communi...
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