Integrated voice, and data over OFDMA-based cellular networks

被引：0
|
作者：
Khalaf, G.A.F.M. [1 ]
机构：
[1] Electronics, Communications and Computer Dept., Faculty of Eng., Helwan, Cairo, Egypt
来源：
AEJ - Alexandria Engineering Journal | 2007年 / 46卷 / 06期
关键词：
We consider the problem of integrating real; and non real time applications over an OFDMA-based cellular network under Rayleigh fading channels. A differentiated power allocation system is presented in conjunction with a dynamic bit assignment scheme. The bit assignment is based on a number of SNR-switching threshold levels that are predetermined by quantizing the overall spectrum of received SNR such that a predefined target BER is achieved. A queueing model that takes into account the effects of the sliding window flow control as well as wireless channel outages is developed; and validated. Simulation results have demonstrated that our system is able to provide an acceptable QoS levels to the real; and non real time individual applications. © Faculty of Engineering; Alexandria University;
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摘要：
Journal article (JA)
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页码：837 / 847
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