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Cooperative communications: Selected topics on relay channels

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The current wireless data traffic growth cannot be handled by classical
multi-hop network protocols as in interference-free wired networks, thus
it has been recognized that network nodes need to cooperate in order to
take advantage of source and/or channel signal correlations, which is
needed to achieve fundamental capacity limits.
This presentation focuses on cooperative channel coding, where helper
nodes are relays. The simplest example of such a communication is the
relay channel, in which a relay node helps the source to send its
message to the destination.
Various extensions of the relay channel are characterized using upper
bounds on capacity and achievable rates: the relay channel with
correlated noises at the relay and destination, the two-way relay
channel with correlated noises at the relay and destinations, where two
sources wish to exchange their data with the help of a relay, and the
multiway relay channel with direct links, where users, grouped into
fully connected clusters (users in a cluster can overhear each others’
messages), wish to exchange their messages locally within a cluster with
the help of one relay.

Monday, October 17, 2016 - 14:00 to 15:15
Amphi Boda, Bâtiment B, Centrale Lille
Anne Savard
Télécom Lille, France