| 改进的非理想信道IEEE802.11DCF性能分析模型 |
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| 引用本文： | 陈高明,张晓敏,薛俊晗.改进的非理想信道IEEE802.11DCF性能分析模型[J].计算机工程与应用,2011,47(5):107-110. |
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| 作者姓名： | 陈高明 张晓敏 薛俊晗 |
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| 作者单位： | 山东大学 信息学院，济南 250100 |
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| 摘 要： | 为了提高分析的精确性，考虑发送成功的站点可能连续发送和重传次数限制的影响，给出了分析非理想信道下IEEE 802.11 DCF性能的改进二维马尔可夫链模型，用该模型对IEEE 802.11 DCF访问机制进行分析，求出饱和吞吐量和平均帧时延表达式。并通过仿真加以验证。
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| 关 键 词： | IEEE802.11分布式协调功能（DCF） 无线局域网 饱和吞吐量 帧时延 |
| 修稿时间： | |
Improved performance analysis model of IEEE802.11DCF for non-ideal channel |
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| CHEN Gaoming,ZHANG Xiaomin,XUE Junhan.Improved performance analysis model of IEEE802.11DCF for non-ideal channel[J].Computer Engineering and Applications,2011,47(5):107-110. |
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| Authors: | CHEN Gaoming ZHANG Xiaomin XUE Junhan |
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| Affiliation: | Information College，Shandong University，Jinan 250100，China |
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| Abstract: | In order to improve the accuracy of analysis,this paper,considering impacts of both finite retry limit and successive transmission,proposes an improved bidimensional Markov chains model for estimating the performance of IEEE 802.11 DCF for a non-ideal channel and then,using the improved model,analyzes the performances of IEEE802.11 DCF wireless LANs,deriving the expressions of the saturation throughput and the average frame delay.The results from the model are verified by simulation. |
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| Keywords: | IEEE802 11 Distributed Coordination Function（DCF） wireless LAN saturation throughput frame delay |
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