On the Excess Distortion Exponent for Memoryless Gaussian Source-Channel Pairs

Yangfan Zhong, Fady Alajaji, L. Campbell
2006 2006 IEEE International Symposium on Information Theory  
For a memoryless Gaussian source under the squared-error distortion fidelity criterion and a memoryless additive Gaussian noise channel with a quadratic power constraint at the channel input, upper and lower bounds for the joint source-channel coding excess distortion exponent (which is the exponent of the probability of excess distortion) are established. A necessary and sufficient condition for which the two bounds coincide is provided, thus exactly determining the exponent. This condition is
more » ... observed to hold for a wide range of source-channel parameters.
doi:10.1109/isit.2006.261928 dblp:conf/isit/ZhongAC06 fatcat:x34elldjhzbrfhwkluzml43x6m