English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We consider the transmission of a memoryless bivariate Gaussian source over atwo-user additive Gaussian multiple-access channel with unidirectionalconferencing encoders. Here, prior to each transmission block, Encoder 1, whichobserves the first source component, is allowed to communicate with Encoder 2,which observes the second source component, via a unidirectional noise-freebit-pipe of given capacity. The main results of this work are sufficientconditions and a necessary condition for the achievability of a distortion pairexpressed as a function of the channel SNR and of the source correlation. Themain sufficient condition is obtained by an extension of the vector-quantizerscheme suggested by Lapidoth-Tinguely, for the case without conferencing, tothe case with unidirectional conference. In the high-SNR regime, and when thecapacity of the conference channel is unlimited, these necessary and sufficientconditions are shown to agree. We evaluate the precise high-SNR asymptotics fora subset of distortion pairs when the capacity of the conference channel isunlimited in which case we show that a separation based scheme attains theseoptimal distortion pairs. However, with symmetric average-power constraints andfixed conferencing capacity, at high-SNR the latter separation based scheme isshown to be suboptimal.

Sending a Bivariate Gaussian Source Over a Gaussian MAC with Unidirectional Conferencing Encoders