Transmitting multiple correlated gaussian sources over a Gaussian MAC using delay-free mappings
2011 (English)In: ISABEL '11 Proceedings of the 4th International Symposium on Applied Sciences in Biomedical and Communication Technologies, 2011Conference paper (Refereed)
In this paper, we study the problem of communicating multiple correlated Gaussian memoryless sources over a Gaussian Multiple Access Channel (GMAC). We focus on distributed delay-free, low complexity, joint source-channel coding (JSCC) solutions to the problem. Theoretical performance bounds are derived and linear and nonlinear JSCC schemes are evaluated. The main contribution is a nonlinear hybrid discrete-analog mapping based on distributed quantization and a linear continuous mapping named Distributed Quantizer Linear Coder (DQLC). The proposed scheme shows promising performance which improve with increasing correlation and is robust against variations in noise level.
Place, publisher, year, edition, pages
IdentifiersURN: urn:nbn:se:kth:diva-70470DOI: 10.1145/2093698.2093808ScopusID: 2-s2.0-84856752212ISBN: 978-1-4503-0913-4OAI: oai:DiVA.org:kth-70470DiVA: diva2:486360
ISABEL '11, the 4th International Symposium on Applied Sciences in Biomedical and Communication Technologies
QC 201202062012-01-302012-01-302012-02-06Bibliographically approved