## A tight bound on the performance of a minimal-delay joint source-channel coding scheme

An analog source is to be transmitted across a Gaussian channel in more than one channel use per source symbol. This paper derives a lower bound on the asymptotic mean squared error for a strategy that consists of repeatedly quantizing the source, transmitting the quantizer outputs in the first channel uses, and sending the remaining quantization error uncoded in the last channel use. The bound coincides with the performance achieved by a suboptimal decoder studied by the authors in a previous paper, thereby establishing that the bound is tight.

Published in:
2010 Ieee International Symposium On Information Theory, 136-140
Presented at:
IEEE International Symposium on Information Theory (ISIT'10), Austin, Texas, June 12-18, 2010
Year:
2010
Publisher:
Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa
ISBN:
978-1-4244-6960-4
Keywords:
Laboratories: