Joint Source-Channel Coding over a Fading Multiple Access Channel with Partial Channel State Information

TL;DR

This paper investigates transmitting correlated sources over a fading multiple access channel with partial channel state information, deriving conditions for successful transmission and optimal power allocation strategies, especially for Gaussian MACs.

Contribution

It provides new sufficient conditions for source transmission over fading MACs with partial CSI and introduces an optimal power allocation strategy for Gaussian MACs.

Findings

Derived sufficient conditions for transmission with distortions

Established optimal power allocation strategy for Gaussian MAC

Compared strategies under different levels of channel state information

Abstract

In this paper we address the problem of transmission of correlated sources over a fast fading multiple access channel (MAC) with partial channel state information available at both the encoders and the decoder. We provide sufficient conditions for transmission with given distortions. Next these conditions are specialized to a Gaussian MAC (GMAC). We provide the optimal power allocation strategy and compare the strategy with various levels of channel state information. Keywords: Fading MAC, Power allocation, Partial channel state information, Correlated sources.