Title :
Minimal Waiting Time Assignment of Subcarriers and Power for OFDMA System
Author :
Yang, Xiang ; Yum, Tak-Shing Peter
Author_Institution :
Dept. of Electron. & Info., South Chinese Univ. of Technol., Guangzhou
Abstract :
This paper presents a new method for subcarriers and power allocation for orthogonal frequency division multiple access (OFDMA) with the purpose of minimizing the instantaneous buffering latency of all users. Numerical results show that the average packet delay can be reduced by up to 50% and the spectrum utilization can be increased by 0.5 bits/s/Hz when compared to the scheme used in IEEE 802.16a.
Keywords :
IEEE standards; OFDM modulation; resource allocation; IEEE 802.16a; OFDMA system; buffering latency; orthogonal frequency division multiple access; packet delay; power allocation; spectrum utilization; subcarriers; waiting time assignment; Delay; Demodulation; Discrete Fourier transforms; Fading; Frequency conversion; Intersymbol interference; OFDM; Power control; Quality of service; Resource management;
Conference_Titel :
Wireless Communications and Networking Conference, 2007.WCNC 2007. IEEE
Conference_Location :
Kowloon
Print_ISBN :
1-4244-0658-7
Electronic_ISBN :
1525-3511
DOI :
10.1109/WCNC.2007.332
