Title :
Distortion management of real-time MPEG-4 video over downlink multicode CDMA networks
Author :
Su, Guan-Ming ; Han, Zhu ; Kwasinski, Andres ; Wu, Min ; Liu, K. J Ray ; Farvardin, Nariman
Author_Institution :
Dept. of Electr. & Comput. Eng., Maryland Univ., College Park, MD, USA
Abstract :
In this paper, a protocol is designed to manage source rate/channel coding rate adaptation, code allocation, and power control to transmit real-time MPEG-4 FGS video over downlink multicode CDMA networks. We develop a fast adaptive scheme of distortion management to reduce the overall distortion received by all users subject, to the limited number of codes and maximal transmitted power. Compared with a modified greedy method in literature, our proposed algorithm can reduce the overall system´s distortion by at least 45%.
Keywords :
code division multiple access; combined source-channel coding; data compression; radio links; resource allocation; video coding; visual communication; channel coding rate adaptation; code allocation; distortion management; downlink multicode CDMA networks; power control; real-time MPEG-4 video; source rate coding; Decoding; Downlink; Energy management; MPEG 4 Standard; Multiaccess communication; Power system management; Protocols; Resource management; Streaming media; Video compression;
Conference_Titel :
Communications, 2004 IEEE International Conference on
Print_ISBN :
0-7803-8533-0
DOI :
10.1109/ICC.2004.1313096
