本文選題：LTE + OFDM�。� 參考：《北京理工大學(xué)》2014年碩士論文

【摘要】：由于全球微波接入互操作（World interoperability for MicrowaveAccess,WIMAX）、WIFI技術(shù)的迅猛崛起，為了應(yīng)對它們所帶來的市場挑戰(zhàn)，維持在移動通信行業(yè)中的競爭力，2004年底，國際化標(biāo)準(zhǔn)組織3GPP啟動了長期演進(jìn)（Long Term Evolution，LTE）計劃，以實現(xiàn)3G技術(shù)向超3G移動通信系統(tǒng)和4G的平滑過渡。本文以LTE物理層協(xié)議為基礎(chǔ)，通過搭建LTE下行物理層鏈路仿真平臺，對其物理層關(guān)鍵技術(shù)進(jìn)行深入的研究與分析。 本文首先介紹了LTE技術(shù)的背景、演進(jìn)目標(biāo)和市場發(fā)展現(xiàn)狀，闡述了LTE物理層基本概念及下行物理層關(guān)鍵技術(shù)OFDM、調(diào)制技術(shù)的基本原理，，然后搭建LTE下行物理層仿真平臺，利用此平臺實現(xiàn)對不同調(diào)制方式、不同UE速度這兩種情況下的仿真分析，接著介紹了一種基于濾波器組的多載波技術(shù)（FBMC），由于FBMC具有帶外泄露較小，不需添加循環(huán)前綴等優(yōu)點，被認(rèn)為是可以替代OFDM的一種技術(shù)。文中對FBMC系統(tǒng)的基本原理進(jìn)行了詳細(xì)的闡述，包括影響系統(tǒng)性能的關(guān)鍵因素——原型濾波器的設(shè)計、系統(tǒng)實現(xiàn)結(jié)構(gòu)及OQAM調(diào)制技術(shù)的特點，然后通過仿真分析了FBMC相較于OFDM技術(shù)的一些優(yōu)勢。最后介紹了LTE系統(tǒng)的硬件平臺——T6280通用無線通信測試儀，本測試儀可以支持各類通信標(biāo)準(zhǔn)，可高效實現(xiàn)信令、非信令、快速測試等多場景多模式應(yīng)用。接著介紹了作者在此測試儀開發(fā)過程中所負(fù)責(zé)的GPIB驅(qū)動的開發(fā)，文中對GPIB接口的基本概念及接口功能進(jìn)行了簡單的說明，然后通過對GPIB專用接口芯片TNT5002的寄存器的描述了解如何實現(xiàn)GPIB接口的功能，最后對GPIB驅(qū)動進(jìn)行軟件設(shè)計實現(xiàn)其功能。
[Abstract]:Due to the rapid rise of WIMAX WIFI technology in the global microwave access interoperability, in order to meet the market challenges they pose, and to maintain competitiveness in the mobile communications industry in late 2004, the International Standards Organization (3GPP) launched the long term long Term Evolution Project. In order to realize the smooth transition of 3G technology to ultra-3G mobile communication system and 4G. Based on the LTE physical layer protocol, the key technologies of LTE downlink physical layer are deeply studied and analyzed by building a LTE downlink simulation platform. This paper first introduces the background, evolution goal and market development status of LTE technology, expounds the basic concept of LTE physical layer, the key technology of downlink physical layer, and the basic principle of modulation technology, then builds the LTE downlink physical layer simulation platform. This platform is used to simulate and analyze different modulation modes and different UE speeds. Then, a multi-carrier technology based on filter banks is introduced. Because FBMC has the advantages of small out-of-band leakage and no need to add cyclic prefix. It is considered to be a technology that can replace OFDM. In this paper, the basic principle of FBMC system is described in detail, including the design of prototype filter, the structure of system implementation and the characteristics of OQAM modulation technology, which are the key factors affecting the performance of the system. Then some advantages of FBMC compared with OFDM technology are analyzed by simulation. Finally, the hardware platform of LTE system, T6280 universal wireless communication tester, is introduced. This tester can support all kinds of communication standards, and can efficiently implement multi-scene and multi-mode applications such as signaling, non-signaling, fast testing and so on. Then it introduces the development of GPIB driver which the author is responsible for in the development process of the tester. The basic concept and interface function of GPIB interface are briefly explained in this paper. Then, by describing the register of TNT5002, a special interface chip of GPIB, how to realize the function of GPIB interface is understood. Finally, the software design of GPIB driver is carried out to realize its function.
【學(xué)位授予單位】：北京理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TN929.5

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本文編號：1987026