發(fā)布時(shí)間：2018-01-15 03:00

  本文關(guān)鍵詞：應(yīng)用雙天線無線網(wǎng)絡(luò)的性能提升研究　出處：《大連理工大學(xué)》2014年博士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 自組網(wǎng)絡(luò) 點(diǎn)對點(diǎn)移動無線網(wǎng)絡(luò) 雙天線接收 動態(tài)延遲線 路由發(fā)現(xiàn) 網(wǎng)絡(luò)壽命最大化

【摘要】：本博士學(xué)位論文目的在于解決在幾乎所有的無線網(wǎng)絡(luò)中一些存在的問題,特別是在ad-hoc網(wǎng)絡(luò)中存在的若干重要問題,其中包括信號干擾、網(wǎng)絡(luò)路由、功率控制和網(wǎng)絡(luò)壽命最大化等。本文的主要貢獻(xiàn)是致力于促進(jìn)解決上述問題。在ad-hoc網(wǎng)絡(luò)中應(yīng)用雙天線終端配備動態(tài)延遲線是本文章的關(guān)鍵點(diǎn)。本文通過理論分析和仿真模擬來顯示給出的在本文中方法的效率對于網(wǎng)絡(luò)性能提升。 1.電磁波的干擾是無線網(wǎng)絡(luò)最具有挑戰(zhàn)性的問題之一。這個(gè)問題尤其凸顯在蜂窩網(wǎng)絡(luò)中。這主要原因是,第一頻率資源匱乏,第二由于每個(gè)蜂窩中可能存在大量的用戶接入,這使得如何分配和調(diào)度頻率資源變得異常的復(fù)雜。在實(shí)際中,無線信號干擾會顯著地降低網(wǎng)絡(luò)服務(wù)質(zhì)量。在嚴(yán)重的情況下,更有可能會完全阻斷網(wǎng)絡(luò)通信,極大降低網(wǎng)絡(luò)的性能。 2.高校的路由在非集中式無線網(wǎng)絡(luò)中,會促進(jìn)從源端到目的端進(jìn)行的數(shù)據(jù)交換,可以減少數(shù)據(jù)包的投遞延遲,并增加網(wǎng)絡(luò)的吞吐能力。本文提出的應(yīng)用雙天線終端配備動態(tài)延遲線方法可以探測源端到目的端的歐氏距離,并在數(shù)據(jù)傳輸階段中通過減少網(wǎng)關(guān)幾點(diǎn)的參與數(shù)量根據(jù)此信息來優(yōu)化現(xiàn)有的路由算法。 3.有效的功率控制可以減少移動節(jié)點(diǎn)的能量消耗,延長移動設(shè)備的使用壽命。在ad-hoc網(wǎng)絡(luò)中進(jìn)行功率控制是非常必要的。因?yàn)閍d-hoc網(wǎng)絡(luò)中的大部分移動設(shè)備都是能量受限的,并且只能提供短程無線電傳播。同時(shí),由于減少干擾的負(fù)面影響,優(yōu)化地選擇傳輸功率可以減少信號干擾對信號質(zhì)量的影響、改善網(wǎng)絡(luò)服務(wù)質(zhì)量、提高網(wǎng)絡(luò)的吞吐能力。在本文給出的算法中,功率控制是應(yīng)用的在數(shù)據(jù)傳輸階段中,即路線從源端到目的端已經(jīng)發(fā)現(xiàn)的。提出的功率控制方法是路由算法的改進(jìn)版。 4.在無線點(diǎn)對點(diǎn)網(wǎng)絡(luò)中,收發(fā)終端是移動的,而且移動設(shè)備的電池能量往往是嚴(yán)格受限的。這也是為什么網(wǎng)絡(luò)壽命最大化能夠引起世界各地研究者關(guān)注的原因。在本論文中,網(wǎng)絡(luò)壽命最大化問題是通過應(yīng)用雙天線終端配備動態(tài)延遲線來實(shí)現(xiàn)的。這也屬于一種功率控制域的問題,其方法目的是在數(shù)據(jù)的傳輸階段中,通過減少網(wǎng)絡(luò)中網(wǎng)關(guān)節(jié)點(diǎn)的參與數(shù)量來減少移動設(shè)備的能量消耗。本工作主要介紹了一種分區(qū)方法。該方法通過利用雙天線系統(tǒng)根據(jù)收發(fā)終端的通信范圍來劃分扇形和環(huán)形兩種區(qū)域。通過優(yōu)化這兩種區(qū)域的數(shù)量來實(shí)現(xiàn)節(jié)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.
【學(xué)位授予單位】：大連理工大學(xué)
【學(xué)位級別】：博士
【學(xué)位授予年份】：2014
【分類號】：TN929.5

【參考文獻(xiàn)】

相關(guān)期刊論文 前1條

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本文編號：1426454