Title :
A practical rate control algorithm for VBR MPEG-2 video transmission over ATM networks
Author :
Lee, Won-Yeol ; Jeong, Yeonsik ; Lee, Jae Cheol ; Kim, Lnkyeom
fDate :
5/1/2000 12:00:00 AM
Abstract :
A joint encoder and channel rate control system for real-time VBR video transmission over ATM networks is proposed. The proposed system consists of channel rate control and encoder rate control. The channel rate over unit GOP is allocated from the proposed 3-state Markov chain model, in which the states are transient according to video traffic. Given the channel rate, encoder rate control is performed by solving the minimum distortion equation using Lagrange multiplier. Experimental results show that our method maintains consistent quality, as compared with the conventional real-time implementations, especially when there exist scene changes in the image sequences
Keywords :
Markov processes; asynchronous transfer mode; code standards; image sequences; rate distortion theory; telecommunication networks; telecommunication standards; telecommunication traffic; video coding; visual communication; 3-state Markov chain model; ATM networks; GOP; Lagrange multiplier; VBR MPEG-2 video transmission; channel rate control; encoder rate control; experimental results; group of pictures; image sequences; minimum distortion equation; practical rate control algorithm; real-time VBR video transmission; scene changes; state transition diagram; video traffic; Channel rate control; Communication system traffic control; Computer science; Control systems; Equations; Image sequences; Real time systems; Research and development; Telecommunication control; Traffic control;
Journal_Title :
Consumer Electronics, IEEE Transactions on
