Title :
Cooperation strategies for the butterfly network: Neutralization, feedback, and computation
Author :
Chaaban, Anas ; Sezgin, Aydin ; Tuninetti, Daniela
Author_Institution :
Digital Commun. Syst., Ruhr-Univ. Bochum, Bochum, Germany
Abstract :
A butterfly network (BFN) consisting of 2 source nodes, 2 destination nodes, and a relay, with relay-source feedback is considered. Transmission schemes are proposed for this setup, which exploit feedback based on compute-forward using nested-lattice codes. A novel nested-lattice interference neutralization strategy is also proposed. The performance of these schemes is compared and discussed, and it is shown that these schemes can provide net-gain, i.e., the gain in the sum-capacity gain is larger than the number of feedback bits invested.
Keywords :
cooperative communication; feedback; hypercube networks; network coding; radiofrequency interference; relay networks (telecommunication); telecommunication network topology; BFN; butterfly network; compute-forward feedback; cooperation strategy; destination nodes; feedback bits; nested-lattice codes; nested-lattice interference neutralization strategy; net-gain; relay transmission schemes; relay-source feedback; source nodes; sum-capacity gain;
Conference_Titel :
Signals, Systems and Computers (ASILOMAR), 2012 Conference Record of the Forty Sixth Asilomar Conference on
Conference_Location :
Pacific Grove, CA
Print_ISBN :
978-1-4673-5050-1
DOI :
10.1109/ACSSC.2012.6489334
