Title :
WLC22-2: Delay Analysis and Comparison of OFDM-TDMA and OFDMA under IEEE 802.16 QoS Framework
Author :
Chang, Yu-Jung ; Chien, Feng-Tsun ; Kuo, C. C Jay
Author_Institution :
Dept. of Electr. Eng., Univ. of Southern California, Los Angeles, CA
fDate :
Nov. 27 2006-Dec. 1 2006
Abstract :
The delay analysis and comparison of OFDM- TDMA and OFDMA using a flow control scheme under the QoS framework of IEEE 802.16 are conducted in this work. We investigate the maximum packet delay performance by deriving delay bounds for several multiaccess modes with different subcarrier/time-slot assignment and bit allocation schemes. The analytical delay bounds provide insights into the performance difference among different multiaccess schemes, and demonstrate each scheme´s capability of supporting real-time, delay-sensitive multimedia applications. The derived analytical results are verified by computer simulation.
Keywords :
OFDM modulation; WiMax; channel allocation; delays; frequency division multiple access; multimedia communication; quality of service; time division multiple access; IEEE 802.16 QoS framework; OFDM-TDMA; OFDMA; analytical delay bounds; bit allocation schemes; computer simulation; delay analysis; delay-sensitive multimedia applications; flow control scheme; maximum packet delay performance; multiaccess modes; subcarrier-time-slot assignment; Bit rate; Delay; Multiaccess communication; OFDM; Performance analysis; Queueing analysis; Resource management; Streaming media; Time division multiple access; USA Councils;
Conference_Titel :
Global Telecommunications Conference, 2006. GLOBECOM '06. IEEE
Conference_Location :
San Francisco, CA
Print_ISBN :
1-4244-0356-1
Electronic_ISBN :
1930-529X
DOI :
10.1109/GLOCOM.2006.740
