Title :
A new medium access scheme for multimedia service in CDMA systems
Author :
Kim, Il-Min ; Kim, Hyung-Myung
Author_Institution :
Dept. of Electr. Eng., Korea Adv. Inst. of Sci. & Technol., Seoul, South Korea
Abstract :
A new medium access control (MAC) scheme has been proposed for video service in CDMA systems. We introduce suitable metrics first for video quality rating such as average peak signal to noise ratio (PSNR) and distortion variation. Then, based on these criteria, the effective MAC scheme is obtained for the real video service by taking image characteristics into consideration and modeling the distortion propagation effect due to motion compensation. Unlike the conventional schemes, the new scheme varies the bit error probability (BEP) with the changes of image characteristics. Simulation results show that the proposed scheme utilizes bandwidth more efficiently than conventional schemes do
Keywords :
code division multiple access; error statistics; motion compensation; multimedia communication; visual communication; CDMA systems; MAC scheme; PSNR; average peak signal to noise ratio; bit error probability; distortion propagation effect; distortion variation; image characteristics; medium access control scheme; motion compensation; multimedia service; simulation results; video quality rating; video service; Algorithm design and analysis; Bit rate; Communication standards; Electronic mail; Error probability; Multiaccess communication; Multimedia systems; PSNR; Quality of service; Traffic control;
Conference_Titel :
Vehicular Technology Conference Proceedings, 2000. VTC 2000-Spring Tokyo. 2000 IEEE 51st
Conference_Location :
Tokyo
Print_ISBN :
0-7803-5718-3
DOI :
10.1109/VETECS.2000.851664
