Delay assignment and optimal rate allocation for OFDMA based cellular networks

被引：0
|
作者：
Khalaf, G.A.F.M. [1 ]
机构：
[1] Electronics and Communications Dept., Faculty of Engineering, Helwan, Cairo, Egypt
来源：
AEJ - Alexandria Engineering Journal | 2007年 / 46卷 / 01期
关键词：
In this paper; we derive an analytical model for the delay bound of the down link (base station to mobiles); in a single cell Orthogonal Frequency Division Multiple Access (OFDMA) cellular system. The delay bound is exploited in formulating a dynamic subcarrier assignment strategy that equalizes both the queuing; and the channel throughput performances in response to the time-varying nature of frequency selective fading channels. Optimal subcarrier's transmission power allocation is found by solving a constrained optimum rate allocation problem. Results have indicated that the proposed strategies exploit the time varying channel conditions in an efficient way; and have the prospects to improve the queuing delay while maximizing the data transmission rates in real life networks. © Faculty of Engineering Alexandria University;
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页码：11 / 18
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