Title :
A new scheduling algorithm and performance with opportunistic beamforming
Author :
Pei, Ting-Rui ; Peng, Zhen ; Cao, Jiang-lian ; Yao, Zhi-Qiang
Author_Institution :
Coll. of Inf. Eng., Xiangtan Univ.
Abstract :
In this paper, a novel scheduling algorithm named time-fair selective scheduling (TFS) is proposed and the performance of TFS with multi-antenna opportunistic beamforming is investigated. Simulation shows that time-fair selective scheduling yields better time fairness and better system performance than proportional fair scheduling in TDM cellular system. Furthermore, time-fair scheduling can avoid the phenomena that the user on the border of the cell does not allocate slots more effectively. TFS combined with opportunistic beamforming can exploit multiuser diversity even in slow fading channel. It is shown that opportunistic beamforming with more antennas would induce larger and faster fluctuation, but the performance decreases with too much antennas. The optimal number of antennas can be determined according to the results in this paper
Keywords :
antenna arrays; cellular radio; diversity reception; fading channels; scheduling; time division multiplexing; wireless channels; TDM cellular system; multi-antenna opportunistic beamforming; multiuser diversity; proportional fair scheduling; slow fading channel; time fairness; time-fair selective scheduling algorithm; Array signal processing; Delay; Diversity reception; Fading; Fluctuations; Round robin; Scheduling algorithm; System performance; Throughput; Time division multiplexing; Round-Robin scheduling; TDM cellular system; multiuser diversity; proportional fair scheduling; time-fair selective scheduling;
Conference_Titel :
Advanced Communication Technology, 2006. ICACT 2006. The 8th International Conference
Conference_Location :
Phoenix Park
Print_ISBN :
89-5519-129-4
DOI :
10.1109/ICACT.2006.205909