Multiterminal source-channel communication under orthogonal multiple access

Jin Jun Xiao, Zhi Quan Luo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

Abstract

We consider the problem of transmitting a number of distributed sources through an orthogonal multiple access channel to a common destination. We characterize the optimal tradeoff between the transmission cost and the distortion as measured against individual sources. The approach consists of two steps: (1) a multiple- letter characterization of the rate-distortion region for the multiterminal source coding; (2) a source-channel separation theorem ensuring that all achievable cost- distortion pairs can be obtained by combining the rate-distortion region and the orthogonal multiple access channel capacity region. As a corollary, we determine the optimal power-distortion tradeoff in a quadratic Gaussian sensor network under orthogonal multiple access, and show that separate source-channel coding strictly outperforms the uncoded (amplify-forward) transmission, and is in fact optimal in this case. This result is in sharp contrast to the case of non-orthogonal multiple access for which separate source-channel coding is not only suboptimal but also strictly inferior to uncoded transmission [12].

Original languageEnglish (US)
Title of host publication43rd Annual Allerton Conference on Communication, Control and Computing 2005
PublisherUniversity of Illinois at Urbana-Champaign, Coordinated Science Laboratory and Department of Computer and Electrical Engineering
Pages1247-1256
Number of pages10
ISBN (Electronic)9781604234916
StatePublished - Jan 1 2005
Event43rd Annual Allerton Conference on Communication, Control and Computing 2005 - Monticello, United States
Duration: Sep 28 2005Sep 30 2005

Publication series

Name43rd Annual Allerton Conference on Communication, Control and Computing 2005
Volume3

Other

Other43rd Annual Allerton Conference on Communication, Control and Computing 2005
CountryUnited States
CityMonticello
Period9/28/059/30/05

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  • Cite this

    Xiao, J. J., & Luo, Z. Q. (2005). Multiterminal source-channel communication under orthogonal multiple access. In 43rd Annual Allerton Conference on Communication, Control and Computing 2005 (pp. 1247-1256). (43rd Annual Allerton Conference on Communication, Control and Computing 2005; Vol. 3). University of Illinois at Urbana-Champaign, Coordinated Science Laboratory and Department of Computer and Electrical Engineering.