In this thesis work, a composite DPCM system is designed and implemented for the transmission of a NTSC color TV signal over a 44.736 Mbps channel.
It is based on an intra-field fourth order fixed linear predictor and a fixed nonlinear quantizer of five bits. The predictor preserves both the luminance and the chrominance components through one predictor.
To accomodate the speed requirement for real time processing, mainly high speed ECL gates and memory devices are used in the hardware implementation.
Experimental results show that this composite DPCM system can be applicable for the practical transmission of color TV signal, but the image sharpness is somewhat reduced.
To enhance the image quality, adaptive predictor and quantizer are recommendable.
