基于ofdma的WiMAX系统容量

C. Tarhini, T. Chahed
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引用次数: 23

摘要

在本文中,我们研究了基于ofdma的宽带无线WiMAX系统在固定比特率流流量和弹性流流量的情况下,在用户进入系统并在有限时间后离开系统的动态配置下的容量。这个持续时间是他们在弹性流的情况下获得的资源的函数;它不适合语音。使用马尔可夫分析,我们计算了几个性能指标,如阻塞概率和平均传输时间,使用精确和近似,准平稳的解决方案。最后,我们用数值方法展示了该系统在不同录取数字下的性能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
System capacity in OFDMA-based WiMAX
In this paper, we study the capacity of broadband wireless OFDMA-based WiMAX systems, in the presence of both constant-bit-rate streaming traffic as well as elastic one, under a dynamic configuration wherein users come to the system and leave it after a finite duration. This duration is function of the resources they obtain for the case of elastic flows; it is not for voice ones. Using Markovian analysis, we calculate several performance measures, such as the blocking probability and mean transfer time, using exact and approximate, quasi-stationary-based, solutions. We eventually show numerically the performance of such a system under different admission figures.
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