Xv. Processing and Transmission of Information Academic and Research Staff Fig. A. Coding for Source-channel Pairs

In many communication problems the source output is not simply one of M equally ly messages and the user is not merely interested in the probability that the received information is right or wrong. More generally, a source may have any probability distribution P(w) defined over its possible outputs, and the system performance may be measured by the average value of a distortion function d(wi, w ) which gives the distortion to the user when w. is transmitted but decoded as w.. The problem of communicating the J output of such a source over a given channel with minimum distortion is being studied in this research. XV-1. Performance curve Unlike previous work, which separated the coding for source transoperation into two parts, a source representation