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基于CSMA/CA协议的UWB系统性能研究 被引量：2

Performance Analysis of the UWB System based on CSMA/CA
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摘要 超宽带(UWB)技术为无线通信领域带来了巨大的变革,但同时UWB技术固有的特点给UWB系统的设计也带来了挑战。其中,毫秒级的信道捕获时间导致了UWB系统性能的下降。因此,介质接入控制(MAC)协议的设计中应当考虑捕获时间的影响。本文研究了UWB系统中标准MAC协议CSMA/CA的性能,并将其与窄带系统进行比较,分别讨论了不同分组大小和分组到达时间的影响。仿真结果显示,在现有的CSMA/CA协议框架下,UWB系统并不能获得很好的性能,同时可以看出,大的信道业务量更适合UWB环境。 Ultra-wide-band(UWB) technology brings great promise for revolutionizing wireless communications.However,the inherent property of UWB holds critical challenges in UWB system design.One of the drawbacks of this technology is the high channel acquisition time of the order of a few milli-seconds,which causes serious performance degradation in UWB systems.Therefore,it is important for medium access control(MAC) protocol design to consider the impact of acquisition time.In this paper,we study the performance of ...
作者 林炜岚 仇洪冰
机构地区 广西桂林电子科技大学信息与通信学院
出处 《微计算机信息》 北大核心 2008年第3期115-117,共3页 Control & Automation
基金 国家自然科学基金项目(60372037)
关键词 超宽带 MAC协议 CSMA/CA UWB MAC protocol CSMA/CA
分类号 TN925 [电子电信—通信与信息系统]
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参考文献6

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二级参考文献5

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共引文献4

同被引文献13

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微计算机信息
2008年 第3期

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