Efficient real-time video transmission in OVSF-CDMA system

Author

Xu, Jun ; Xuemin Shen ; Mark, Jon W. ; Cai, Jun

Author_Institution

Dept. of Electr. & Comput. Eng., Waterloo Univ., Ont., Canada

Volume

3

fYear

2005

fDate

13-17 March 2005

Firstpage

1329

Abstract

The paper studies downlink channel utilization for real-time video traffic transmission in an orthogonal variable spreading factor code division multiple access (OVSF-CDMA) system. By modeling video traffic as a Markov modulated process and properly partitioning the states of the Markov process, an adaptive rate allocation scheme is proposed for real-time video transmission with quality of service (QoS) satisfaction while achieving high channel utilization. The scheme is applicable for packet switching and frame-by-frame real-time video transmission, and incorporates both physical layer and network layer characteristics. The QoS requirements include stringent packet delay and packet loss rate. Analytical and simulation results demonstrate that the proposed scheme can significantly improve the channel utilization over the commonly used effective bandwidth approach.

Keywords

3G mobile communication; Markov processes; code division multiple access; delays; packet radio networks; quality of service; resource allocation; telecommunication channels; telecommunication traffic; visual communication; Markov modulated process; Markov process; OVSF-CDMA system; QoS; adaptive rate allocation scheme; beyond-3G wireless networks; downlink channel utilization; effective bandwidth; network layer; orthogonal variable spreading factor code division multiple access; packet delay; packet loss rate; packet switching; physical layer; quality of service; real-time video traffic transmission; real-time video transmission; third generation wireless networks; video traffic; Analytical models; Delay; Downlink; Markov processes; Multiaccess communication; Packet switching; Physical layer; Quality of service; Real time systems; Traffic control;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications and Networking Conference, 2005 IEEE

ISSN

1525-3511

Print_ISBN

0-7803-8966-2

Type

conf

DOI

10.1109/WCNC.2005.1424709

Filename

1424709