Necessary condition for sending a bivariate Gaussian source over the ``asymmetric'' Gaussian MAC

S. Bross, Yaron Laufer

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


We consider the transmission of a bivariate Gaussian memoryless source over a two-user additive Gaussian multiple-access channel with unidirectional conferencing. Here, prior to each transmission block Encoder 1 is allowed to communicate with Encoder 2 via a unidirectional noise-free bit-pipe of given capacity. We derive a necessary condition for the achievability of a distortion pair expressed as a function of the channel SNR and of the source correlation. In the high-SNR regime, and when the capacity of the conference channel is unlimited, the necessary condition is shown to agree with a sufficient condition derived previously by the authors. We evaluate the precise high-SNR asymptotics for a subset of distortion pairs when the conferencing capacity is unlimited in which case we show that the problem is separable.
Original languageAmerican English
Title of host publication2015 IEEE International Symposium on Information Theory (ISIT)
StatePublished - 2015

Bibliographical note

Place of conference:Hong Kong


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