【摘要】：隨著4G技術(shù)的逐步成熟和在中國大規(guī)模商用的開始,無線與移動(dòng)通信技術(shù)的發(fā)展逐步夸入一個(gè)新的時(shí)代,移動(dòng)互聯(lián)網(wǎng)技術(shù)和智能終端技術(shù)已經(jīng)得到前所未有的發(fā)展,這也為大型通信設(shè)備的發(fā)展提出了新要求。本文主要對(duì)無線通信QAM調(diào)制制式下的FDD基帶系統(tǒng)硬件平臺(tái)的設(shè)計(jì)和實(shí)現(xiàn)進(jìn)行研究,提出了一些針對(duì)系統(tǒng)的特有方案并完成了方案的硬件設(shè)計(jì)。最終完成了基帶系統(tǒng)的聯(lián)合調(diào)試、驗(yàn)證以及測(cè)試結(jié)果分析。本文對(duì)于無線通信基帶系統(tǒng)的研究具有一定的現(xiàn)實(shí)意義。文章以FDD微波通信系統(tǒng)的工程實(shí)現(xiàn)為載體,研究了無線通信QAM調(diào)制下基帶系統(tǒng)硬件平臺(tái)的特點(diǎn)和設(shè)計(jì)方法。通過制定方案,方案可行性驗(yàn)證,器件選型、方案電路設(shè)計(jì)、高速PCB設(shè)計(jì)等,實(shí)現(xiàn)了一個(gè)既有鏈路接口又有業(yè)務(wù)接口,既可承載高效的通信鏈路算法又可以完成網(wǎng)絡(luò)應(yīng)用的基帶系統(tǒng)硬件平臺(tái)。本文首先分析系統(tǒng)原理,確定所要設(shè)計(jì)的基帶系統(tǒng)的總體結(jié)構(gòu)和方案,搭建驗(yàn)證平臺(tái)完成對(duì)系統(tǒng)方案的可行性驗(yàn)證。系統(tǒng)以Xilinx公司的XC7K160T(FPGA)和TI公司的TMS320C6424(DSP)為核心處理器件,以FPGA+DSP的架構(gòu)做為硬件平臺(tái)的基本架構(gòu),根據(jù)實(shí)際需求做出器件選型方案。采用模塊化的設(shè)計(jì)思想,基帶系統(tǒng)硬件平臺(tái)劃分為FPGA最小系統(tǒng)、DSP最小系統(tǒng)、模擬信號(hào)處理部分、供電系統(tǒng)等四個(gè)主要部分;其中包涵采樣率可微調(diào)位同步的硬件方案、預(yù)留載波恢復(fù)接口的硬件方案、數(shù)字AGC的接口方案、中頻、射頻控制接口方案、信號(hào)發(fā)送接口方案、高速信號(hào)采樣方案、FPGA與DSP的互聯(lián)方案等多種方案。完成基帶系統(tǒng)硬件平臺(tái)各個(gè)模塊和方案設(shè)計(jì)后,在保證信號(hào)完整性的前提下完成了基帶系統(tǒng)硬件平臺(tái)的高速PCB設(shè)計(jì),把各個(gè)模塊和方案統(tǒng)一到了一塊高速印制電路板上,通過移植通信鏈路算法形成一個(gè)穩(wěn)定可靠的FDD基帶系統(tǒng)。文章最后對(duì)無線通信QAM調(diào)制FDD基帶系統(tǒng)工程設(shè)計(jì)中的軟硬件結(jié)合的調(diào)試技巧和方法進(jìn)行了研究,并以此完成了16QAM調(diào)制制式下FDD模式的基帶系統(tǒng)對(duì)發(fā)對(duì)收驗(yàn)證和分析,最后設(shè)計(jì)中頻調(diào)制、解調(diào)方案完成基帶到中頻的系統(tǒng)聯(lián)合調(diào)試,給出系統(tǒng)的調(diào)試分析結(jié)果。
[Abstract]:With the gradual maturity of 4G technology and the beginning of large-scale commercial in China, the development of wireless and mobile communication technology has gradually entered a new era, mobile Internet technology and intelligent terminal technology has been unprecedented development. This also put forward new requirements for the development of large-scale communication equipment. In this paper, the design and implementation of the hardware platform of FDD baseband system based on QAM modulation system for wireless communication are studied, and some specific schemes for the system are put forward and the hardware design of the scheme is completed. Finally, the joint debugging, verification and test result analysis of the baseband system are completed. This paper has certain practical significance for the research of wireless communication baseband system. Based on the engineering implementation of FDD microwave communication system, this paper studies the characteristics and design method of baseband system hardware platform based on wireless communication QAM modulation. A link interface and a service interface are realized by making a scheme, feasibility verification, device selection, circuit design, high speed PCB design, etc. It can not only carry high efficiency communication link algorithm but also complete the hardware platform of baseband system for network application. In this paper, the principle of the system is analyzed, the overall structure and scheme of the baseband system are determined, and the feasibility of the system is verified by building a verification platform. The system takes the XC7K160T (FPGA) of Xilinx Company and TMS320C6424 (DSP) of TI Company as the core processing device, takes the structure of FPGA DSP as the basic structure of hardware platform, and makes the device selection scheme according to the actual demand. The hardware platform of baseband system is divided into four parts: FPGA minimum system, DSP minimum system, analog signal processing part and power supply system. It includes the hardware scheme that the sampling rate can be fine-tuned and synchronized, the hardware scheme of reserving carrier recovery interface, the interface scheme of digital AGC, if, RF control interface, the signal sending interface, the high-speed signal sampling, The interconnection scheme between FPGA and DSP, etc. After the design of each module and scheme of the baseband system hardware platform, the high-speed PCB design of the baseband system hardware platform is completed on the premise of ensuring the signal integrity, and each module and scheme are unified on a high-speed printed circuit board. A stable and reliable FDD baseband system is formed by transplanting the communication link algorithm. Finally, the debugging techniques and methods of hardware and software combination in the design of FDD baseband system for QAM modulation in wireless communication are studied, and the verification and analysis of the base band system in FDD mode under 16QAM modulation are completed. Finally, the intermediate frequency modulation and demodulation scheme are designed to complete the joint debugging of baseband to intermediate frequency system, and the results of system debugging and analysis are given.
【學(xué)位授予單位】：電子科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TN92

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本文編號(hào)：2411421