Analog Network Coding Mappings for the Gaussian Multiple-Access Relay Channel
2009 (English)In: 2009 IEEE INTERNATIONAL SYMPOSIUM ON INFORMATION THEORY, NEW YORK: IEEE , 2009, 104-108 p.Conference paper (Refereed)
We consider the multiple-access relay channel with two source nodes, one relay node and one destination node. For practical simplicity, we consider orthogonal transmission of the source messages and half-duplex relaying. Further, we assume that the relay is memoryless and is implemented based on a two-to-one deterministic mapping. Essentially the proposed mappings combine the two incoming analog signals and forward them to the destination, thus we term them analog network coding mappings. We investigate both linear and non-linear mappings. In particular, we propose to use mappings based on the Archimedean spiral for analog non-linear combining. In addition, we also propose to couple spiral mappings with sawtooth-like mappings to exploit the potential side information provided by the direct links. We investigate the resulting achievable rate regions and sum rates, and demonstrate significant gains.
Place, publisher, year, edition, pages
NEW YORK: IEEE , 2009. 104-108 p.
Computer and Information Science
IdentifiersURN: urn:nbn:se:kth:diva-28929DOI: 10.1109/ISIT.2009.5206060ISI: 000280141400022ScopusID: 2-s2.0-70449514902ISBN: 978-1-4244-4312-3OAI: oai:DiVA.org:kth-28929DiVA: diva2:399678
IEEE International Symposium on Information Theory (ISIT 2009) Seoul, SOUTH KOREA, JUN 28-JUL 03, 2009
QC 201102232011-02-232011-01-252011-02-23Bibliographically approved