HDTV Transmission System Design in an SDH-based STM Network

摘要

This paper proposes an HDTV transmission system design for an SDH-based STM network.The proposed HDTV coding algorithms are based on sub-band coding；one uses subband DCT for HDTV distribution services while the other uses subband DPCM for HDTV contribution services.Network architecture is discussed for high quality HDTV transmission in SDH-based STM network so broadband communication services such as HDTV transmission service can be provided upon the introduction of B-ISDN in the early stage of 90 years.This paper also proposes a method to compensate for degradation in video transmission systems.i.e.,burst errors in STM networks and consecutive cell loss in ATM networks,using random error correcting codes and an interleave structure.Finally,an HDTV transmission experimental system is described using SDH-based STM network.