本文選題：自適應(yīng)OFDM算法 + 礦井通信　； 參考：《安徽理工大學(xué)》2015年碩士論文

【摘要】：當(dāng)今國(guó)內(nèi)外礦井地下通信尤其是煤礦井下通信主要是依靠光纖電纜對(duì)信號(hào)進(jìn)行傳輸,具有通信帶寬大、信號(hào)損失小和通信可靠性強(qiáng)等特點(diǎn)。但同時(shí)在井下特殊環(huán)境下存在鋪設(shè)和使用成本高、維護(hù)復(fù)雜的缺陷。在當(dāng)今地面通信飛速發(fā)展和成熟的背景下,如何設(shè)計(jì)出一種低成本易維護(hù)且性能可靠質(zhì)量較高的井下通信系統(tǒng)逐漸成為研究的熱點(diǎn)。 本課題以近年來(lái)出現(xiàn)的熱門的自適應(yīng)技術(shù)和傳統(tǒng)的OFDM技術(shù)結(jié)合所產(chǎn)生的自適應(yīng)OFDM資源分配算法為理論基礎(chǔ),提出一種多用戶條件下的OFDM調(diào)制解調(diào)系統(tǒng)試圖有效解決井下特殊環(huán)境的通信問(wèn)題。該設(shè)計(jì)方案成本低且易于實(shí)現(xiàn),經(jīng)過(guò)計(jì)算機(jī)仿真結(jié)果證明達(dá)到井下各類通信類型的要求。本文的主要內(nèi)容如下： 1.通過(guò)分析基于實(shí)時(shí)通信的各類自適應(yīng)分配算法,以速率自適應(yīng)分配算法為基礎(chǔ),融合當(dāng)前礦井通信系統(tǒng)硬件的特點(diǎn)設(shè)計(jì)了一套通信方案。 2.針對(duì)系統(tǒng)基于物理層的設(shè)計(jì)方案進(jìn)行計(jì)算機(jī)仿真測(cè)試,通過(guò)對(duì)系統(tǒng)在不同通信距離參數(shù)的調(diào)制結(jié)果比較,確定系統(tǒng)設(shè)計(jì)合理可行且易于實(shí)現(xiàn),能夠滿足井下復(fù)雜環(huán)境下的各類通信要求。 3.論文提出的自適應(yīng)OFDM調(diào)制解調(diào)系統(tǒng)是一種長(zhǎng)距離寬帶通信系統(tǒng),目的在于解決井下有線光纖通信系統(tǒng)成本高、難維護(hù)的問(wèn)題。同時(shí)也為井下特殊環(huán)境通信的穩(wěn)定性、可靠性和速率等質(zhì)量要求提供了一種實(shí)用的解決方案。對(duì)井下特殊環(huán)境下通信系統(tǒng)的建設(shè)發(fā)展具有促進(jìn)作用。
[Abstract]:Nowadays, underground communication in coal mine, especially in coal mine, mainly relies on optical fiber cable to transmit the signal, which has the characteristics of large communication bandwidth, small signal loss and strong communication reliability.But at the same time in the underground special environment there are many defects such as high cost of laying and using and complex maintenance.Under the background of rapid development and maturity of ground communication, how to design a kind of underground communication system with low cost and easy maintenance and high performance and reliable quality has gradually become a hot research topic.This thesis is based on the adaptive OFDM resource allocation algorithm, which is based on the combination of the popular adaptive technology and the traditional OFDM technology in recent years.A multi-user OFDM modulation and demodulation system is proposed to solve the communication problem of underground special environment.The design is low cost and easy to be realized. The computer simulation results show that it can meet the requirements of all kinds of communication types.The main contents of this paper are as follows:1.By analyzing all kinds of adaptive allocation algorithms based on real-time communication, a communication scheme is designed based on the rate adaptive allocation algorithm and the characteristics of the current mine communication system hardware.2.The computer simulation test is carried out for the system design scheme based on physical layer. By comparing the modulation results of the system in different communication distance parameters, it is determined that the system design is reasonable and feasible and easy to implement.Can meet all kinds of communication requirements in complex underground environment.3.The adaptive OFDM modulation and demodulation system proposed in this paper is a long distance broadband communication system, which aims to solve the problem of high cost and difficult maintenance of underground cable optical fiber communication system.It also provides a practical solution for the stability, reliability and rate of communication in underground special environment.It can promote the construction and development of communication system under special underground environment.
【學(xué)位授予單位】：安徽理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TD65

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