应用双天线无线网络的性能提升研究

发布时间：2018-01-15 03:00

本文关键词：应用双天线无线网络的性能提升研究　出处：《大连理工大学》2014年博士论文　论文类型：学位论文

【摘要】：本博士学位论文目的在于解决在几乎所有的无线网络中一些存在的问题,特别是在ad-hoc网络中存在的若干重要问题,其中包括信号干扰、网络路由、功率控制和网络寿命最大化等。本文的主要贡献是致力于促进解决上述问题。在ad-hoc网络中应用双天线终端配备动态延迟线是本文章的关键点。本文通过理论分析和仿真模拟来显示给出的在本文中方法的效率对于网络性能提升。 1.电磁波的干扰是无线网络最具有挑战性的问题之一。这个问题尤其凸显在蜂窝网络中。这主要原因是,第一频率资源匮乏,第二由于每个蜂窝中可能存在大量的用户接入,这使得如何分配和调度频率资源变得异常的复杂。在实际中,无线信号干扰会显著地降低网络服务质量。在严重的情况下,更有可能会完全阻断网络通信,极大降低网络的性能。 2.高校的路由在非集中式无线网络中,会促进从源端到目的端进行的数据交换,可以减少数据包的投递延迟,并增加网络的吞吐能力。本文提出的应用双天线终端配备动态延迟线方法可以探测源端到目的端的欧氏距离,并在数据传输阶段中通过减少网关几点的参与数量根据此信息来优化现有的路由算法。 3.有效的功率控制可以减少移动节点的能量消耗,延长移动设备的使用寿命。在ad-hoc网络中进行功率控制是非常必要的。因为ad-hoc网络中的大部分移动设备都是能量受限的,并且只能提供短程无线电传播。同时,由于减少干扰的负面影响,优化地选择传输功率可以减少信号干扰对信号质量的影响、改善网络服务质量、提高网络的吞吐能力。在本文给出的算法中,功率控制是应用的在数据传输阶段中,即路线从源端到目的端已经发现的。提出的功率控制方法是路由算法的改进版。 4.在无线点对点网络中,收发终端是移动的,而且移动设备的电池能量往往是严格受限的。这也是为什么网络寿命最大化能够引起世界各地研究者关注的原因。在本论文中,网络寿命最大化问题是通过应用双天线终端配备动态延迟线来实现的。这也属于一种功率控制域的问题,其方法目的是在数据的传输阶段中,通过减少网络中网关节点的参与数量来减少移动设备的能量消耗。本工作主要介绍了一种分区方法。该方法通过利用双天线系统根据收发终端的通信范围来划分扇形和环形两种区域。通过优化这两种区域的数量来实现节省能量的目的。
[Abstract]:The purpose of this dissertation is to solve some problems in almost all wireless networks, especially in ad-hoc networks, including signal interference and network routing. Power control and network lifetime maximization, etc. The main contribution of this paper is to promote the solution of the above problems. The application of dual antenna terminals with dynamic delay lines in ad-hoc networks is the key point in this paper. Theoretical analysis and simulation show that the efficiency of the proposed method can improve the performance of the network. 1. Electromagnetic interference is one of the most challenging problems in wireless networks. This problem is highlighted especially in cellular networks. This is mainly due to the lack of first frequency resources. Second, there may be a large number of user access in each cell, which makes the allocation and scheduling of frequency resources become unusually complex. Wireless signal interference will significantly reduce the quality of service of the network. In serious cases it is more likely to completely block the network communication and greatly reduce the performance of the network. 2. University routing in non-centralized wireless networks will promote data exchange from source to destination, which can reduce packet delivery delay. The dual antenna terminals equipped with dynamic delay lines can be used to detect the Euclidean distance from source to destination. In the data transmission phase, the existing routing algorithms are optimized by reducing the number of gateway participation points. 3. Effective power control can reduce the energy consumption of mobile nodes. Extend the service life of mobile devices. Power control in ad-hoc networks is essential because most mobile devices in ad-hoc networks are energy-constrained. At the same time, the optimal selection of transmission power can reduce the influence of signal interference on signal quality and improve the quality of service of the network because of reducing the negative effects of interference. In the algorithm presented in this paper, power control is applied in the data transmission phase. The proposed power control method is an improved version of the routing algorithm. 4. In wireless point-to-point networks, transceiver terminals are mobile. And the battery energy of mobile devices is often strictly limited. This is why the maximum network life can attract the attention of researchers around the world. In this paper. The problem of network lifetime maximization is realized by using dual antenna terminals with dynamic delay lines. This is also a power control domain problem, the method is designed in the data transmission phase. The energy consumption of mobile devices is reduced by reducing the number of gateway nodes in the network. In this work, a partition method is introduced. This method is divided according to the communication range of the transceiver by using the dual antenna system. The energy saving is achieved by optimizing the number of these two regions.
【学位授予单位】：大连理工大学
【学位级别】：博士
【学位授予年份】：2014
【分类号】：TN929.5

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