Source-Channel Coding for Gaussian Sources Over a Gaussian Multiple Access Channel

The authors consider the problem of distributed joint source-channel coding of correlated Gaussian sources over a Gaussian Multiple Access Channel (MAC). There may be side information at the encoders and/or at the decoder. First they specialize a general result in to obtain sufficient conditions for reliable transmission over a Gaussian MAC. This system does not satisfy the source channel separation. Thus, next they study and compare three joint source channel coding schemes available in literature.