Optimized analog network coding strategies for the white Gaussian multiple-access relay channel
2009 (English)In: 2009 IEEE Information Theory Workshop, 2009, Vol. ITW 2009, 460-464 p.Conference paper (Refereed)
We consider a Gaussian multiple-access relay channel with multiple sources, a relay and a destination. We assume that the received signals at the relay and the destination from different nodes are orthogonal. Additionally, we assume that the relay performs an instantaneous mapping to compress all received signals from different sources into one output symbol. We refer to this as analog network coding. We optimize the analog network coding mapping to maximize the achievable sum rate. We additionally introduce an algorithm to obtain an achievable rate region. The optimized mappings are in general non-linear and provide superior rates compared to those of linear mappings.
Place, publisher, year, edition, pages
2009. Vol. ITW 2009, 460-464 p.
Achievable rate region, Gaussians, Linear mapping, Multiple access relay channel, Multiple source, Network coding, Non-linear, Received signals, Sum-rate, Information theory, Optimization, Mapping
Computer and Information Science
IdentifiersURN: urn:nbn:se:kth:diva-30318DOI: 10.1109/ITW.2009.5351388ISI: 000305809200095ScopusID: 2-s2.0-76249133412ISBN: 9781424449835OAI: oai:DiVA.org:kth-30318DiVA: diva2:400424
2009 IEEE Information Theory Workshop, ITW 2009; Taormina, Sicily
QC 201102252011-02-252011-02-232013-05-06Bibliographically approved