Title :
An Adaptive Resource Allocation Scheme in OFDMA based Multiservice WiMAX Systems
Author :
Xinning Zhu ; Huo, Jiachuan ; Song Zhao ; Zeng, Zhimin ; Ding, Wei
Author_Institution :
Sch. of Continuing Educ., Beijing Univ. of Posts & Telecommun., Beijing
Abstract :
In this paper, we propose a time-frequency resource allocation scheme for OFDMA based system in WiMAX access networks. We utilize a user-based scheduling scheme to reduce complexity. The user with the highest priory is scheduled first on its best subchannel. The resource allocation is performed to guarantee the QoS requirements of various traffic first and to improve throughput next. The simulation results show that the proposed allocation scheme can provide diverse QoS guarantees and use resources efficiently.
Keywords :
OFDM modulation; WiMax; frequency division multiple access; quality of service; radio access networks; resource allocation; scheduling; telecommunication traffic; time-frequency analysis; wireless channels; OFDMA; QoS traffic; adaptive resource allocation scheme; frequency division multiple access; multiservice WiMAX access network; orthogonal frequency division multiplexing; quality of service; time-frequency analysis; user-based scheduling scheme; wireless channel; Chromium; Cognitive radio; Computer vision; Delay effects; Detectors; Frequency; Radio spectrum management; Resource management; Signal detection; WiMAX; IEEE 802.16; OFDMA; QoS; WiMAX; resource allocation; scheduling;
Conference_Titel :
Advanced Communication Technology, 2008. ICACT 2008. 10th International Conference on
Conference_Location :
Gangwon-Do
Print_ISBN :
978-89-5519-136-3
DOI :
10.1109/ICACT.2008.4493833
