SOURCE-CODING AND TRANSMISSION OF HDTV IMAGES COMPRESSED WITH THE WAVELET TRANSFORM

Digital high-definition TV (HDTV) signals are generally compressed to reduce transmission bandwidth requirements. This paper presents a comp ression algorithm for the bit rate reduction of an HDTV image using th e wavelet transform. The major problems related to the transmission of a compressed HDTV signal are analyzed. Transmission is examined both on a noisy channel and an asynchronous transfer mode (ATM) network. Th e effects of channel noise on the reconstructed image are determined, and a solution to mitigate the degradation of the image quality is pre sented. Lastly, a model for the output bit rate of the HDTV coder is d erived and used to simulate the transmission of an ATM multiplexer so that the network's main performance parameters can be determined.