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文章从理论上分析了IEEE802.n无线网络MAC层切换原理和
程，对几种可行的算法进行了比较，分析、计算了切换的延迟时间
提出了带优先级的选择性扫描切换算法和双网卡并行算法等改进
略。借助于开放源代码，用Linux下的wirelesstoo1s提供的A
函数，编写C程序，实现了无线MAC层的快速切换。并且在网络无
覆盖和开放认证的情况下，利用该程序对提出的几种算法分别进行
实验测试分析。
-This paper theoretically analyzes the
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本文针对无线网络中的多种服务类型，对
无线网络的带宽分配和接入方式进行分析，深入分析了不同类型的网络带宽资源
分配和调度算法在运行过程中对网络性能的影响。同时，本文也针对切换服务对
无线网络带宽分配的影响情况进行了分析，对切换服务的路由重建方式进行优
化，提高网络的实际运行性能。-This paper has
analyzed the bandwidth allocating process of wireless network with different service
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In our work we extend the LEACH s cluster head selection algorithm in WSN based on different node characteristics like, density, centrality and energy. This paper focuses on increasing the lifetime of wireless sensor networks.
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This paper presents simulation results and
comparative analysis of some Spatial Diversity Techniques for
Multiple Input Multiple Output (MIMO) based Wireless
Communication Systems. Performance of Alamouti scheme
and Space Time Block Codes
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The goal of
this paper is to describe processes how to simulate the lifetime
of the WSN network during a data gathering. We describe tasks
such as topology generation and visualization, data routing and
communication cost calculation. To esti
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