Title :
Multi-level resource allocation for video delivery over CDMA/TDD systems
Author :
Zheng, Harold ; Wang, Sherry ; Copeland, John A.
Author_Institution :
Commun. Syst. Center, Georgia Inst. of Technol., Atlanta, GA, USA
Abstract :
A multilevel resource allocation scheme is proposed to tackle the problem of how to flexibly allocate limited wireless network resources to high bandwidth demand video traffic with certain QoS guarantees. This scheme utilizes the resource allocation flexibility provided by a CDMA/TDD system and assigns available bandwidth to different traffic loads. The available bandwidth includes codes, time slots, and up/down channel capacity. A computer simulation system based on Ericsson´s wideband packet-CDMA architecture has been developed. Multiple MPEG video traces are used to explore the system capacity. Moreover, an optimal smoothing technique is used to pre-process the video traces so that the bit-rate variability and the bandwidth requirement are reduced. The simulation results demonstrate the significant performance improvement
Keywords :
broadband networks; cellular radio; channel capacity; code division multiple access; packet radio networks; quality of service; smoothing methods; time division multiplexing; visual communication; 3G systems; CDMA/TDD systems; QoS guarantees; available bandwidth; bandwidth requirement; bit-rate variability; codes; high bandwidth demand video traffic; multi-level resource allocation; multiple MPEG video traces; optimal smoothing technique; resource allocation flexibility; system capacity; time slots; traffic loads; up/down channel capacity; video delivery; wideband packet-CDMA architecture; wireless network resources; Bandwidth; Channel capacity; Computer architecture; Computer simulation; Multiaccess communication; Resource management; Telecommunication traffic; Traffic control; Wideband; Wireless networks;
Conference_Titel :
Wireless Communications and Networking Confernce, 2000. WCNC. 2000 IEEE
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-6596-8
DOI :
10.1109/WCNC.2000.904810
