Design Of Source Coders And Joint Source Channel Coders For Noisy Channels

A theory behind a proposed joint source/channel coding approach is developed and a variable rate design approach which provides substantial improvement over current joint source/channel coder designs is obtained. The Rice algorithm as applied to the output of the Gamma Ray Detector of the Mars Orbiter is evaluated. An alternative algorithm is obtained which outperforms the Rice both in terms of data compression and noisy channel performance. A high-fidelity low-rate image compression algorithm is developed which provides almost distortionless compression of high resolution images. Sayood, Khalid and Rost, Martin C. and Michels, Alan Unspecified Center NASA-CR-181547, NAS 1.26:181547 NAG5-916