Multi-layer Gelfand-Pinsker strategies for the generalised multiple-access channel
2014 (English)In: IET Communications, ISSN 1751-8628, Vol. 8, no 8, 1296-1308 p.Article in journal (Refereed) Published
The authors study a two-user state-dependent generalised multiple-access channel (GMAC) with correlated states. It is assumed that each encoder has non-causal' access to channel state information (CSI). They develop an achievable rate region by employing rate-splitting, block Markov encoding, Gelfand-Pinsker multicoding, superposition coding and joint typicality decoding. In the proposed scheme, the encoders use a partial decoding strategy to collaborate in the next block, and the receiver uses a backward decoding strategy with joint unique decoding at each stage. The author's achievable rate region includes several previously known regions proposed in the literature for different scenarios of multiple-access and relay channels. Then, they consider two Gaussian GMACs with additive interference. In the first model, they assume that the interference is known non-causally at both of the encoders and construct a multi-layer Costa precoding scheme that removes completely' the effect of the interference. In the second model, they consider a doubly dirty Gaussian GMAC in which each of interferences is known non-causally only at one encoder. They derive an inner bound and analyse the achievable rate region for the latter model and interestingly prove that if one of the encoders knows the full CSI, there exists an achievable rate region which is independent' of the power of interference.
Place, publisher, year, edition, pages
2014. Vol. 8, no 8, 1296-1308 p.
multi-access systems, Markov processes, decoding, wireless channels, cooperative communication, doubly dirty Gaussian GMAC, multilayer Costa precoding scheme, relay channels, achievable rate region, joint unique decoding, backward decoding strategy, partial decoding, joint typicality decoding, superposition coding, Gelfand Pinsker multicoding, block Markov encoding, rate splitting, channel state information, correlated states, two user state dependent generalised multiple access channel, multilayer Gelfand Pinsker strategies
IdentifiersURN: urn:nbn:se:kth:diva-148252DOI: 10.1049/iet-com.2013.0749ISI: 000337942200013ScopusID: 2-s2.0-84901914059OAI: oai:DiVA.org:kth-148252DiVA: diva2:736058
QC 201408042014-08-042014-08-042014-08-04Bibliographically approved