On Achievable Distortion in Sending Gaussian Sources over a Bandwidth-Matched Gaussian MAC with No Transmitter CSI

Entropy

Chathura Illangakoon¹  Pradeepa Yahampath¹ 

[1] Department of ECE, University of Manitoba, Winnipeg, MB R3T 5V6, Canada;

关键词: gaussian sources;    multiple-access channel;    rayleigh fading;    channel-state information;    joint source-channel coding;    uncoded transmission;   

DOI  :  10.3390/e21100992

来源: DOAJ

【 摘 要 】

This paper investigates the minimum mean square error (MMSE) of communicating a pair of Gaussian sources over a a bandwidth-matched Gaussian multiple-access channel with block Rayleigh fading in the absence of channel state information (CSI) at the transmitters. The achievable MMSE is not known. To this end, we derive several upper-bounds to the minimum achievable average MMSE as a function of the transmitter powers, the average channel fading power-to-noise ratio, and the correlation coefficient of the two sources. To derive nontrivial upper bounds which improve on those of separate source-channel coding and uncoded transmission, we incorporate ideas from joint source-channel coding and hybrid digital−analog coding to construct specific coding schemes for which the achievable MMSE can be determined.

【 授权许可】

Unknown