PERFORMANCE STUDY OF FRAME REPLENISHMENT TRANSMISSION SYSTEMS

In this paper, we compare the performances of three frame replenishment coding techniques over noiseless and noisy channels. For the noisy channel case, we present noise effects and error propagation effects for the three coding techniques. The three frame replenishment coding techniques are: basic frame replenishment coding (BFR), label replenishment coding using vector quantization (LRVQ) and codeword replenishment coding using vector quantization (CWRVQ). Our simulation results demonstrate that for a noiseless channel, the LRVQ and CWRVQ techniques provide superior coding performance, and tolerance to changes in the picture, compared to BFR technique. However, in the presence of channel noise LRVQ and CWRVQ exhibit serious error propagation and noise effects, resulting in poor performance.