HDTV transmission system in an ATM-based network

摘要

This paper proposes an ATM-based nationwide HDTV transmission and distribution network architecture and a picture coding algorithm, which are of key importance to high qualtiy HDTV transmission systems. This HDTV coding algorithm is based on sub-band coding, and its ability to maintain the high picture quality of the original is confirmed. Computer simulation results are presented in terms of bit-per-pel and the quality of the reconstructed picture. This paper also proposes a cell loss compensation method for video signals using random error correcting codes and an interleave structure in an ATM-based network. Analysis results show that the proposed cell loss compensation method reduced cell loss probability to the point that the decoded sequence can be regarded as cell loss free.