基于射频收发机的通信系统的研究与设计

发布时间：2018-05-17 01:44

本文选题：无线通信 + 射频收发机　；参考：《南京邮电大学》2017年硕士论文

【摘要】：为了完善射频收发机的功能模块,适应具有多样通信方式的无线通信系统的迫切需求,本文基于软件无线电通信技术验证平台项目的开发需要,对系统的软件和部分硬件进行了设计、开发和验证。系统的设计主要分为四个部分:一是计算机的matlab部分,用于处理数字信息以及完成信号的调制解调等。二是射频收发机硬件传输链路,发射链路将基带信号调制至高频载波以便空间传输,接收链路接收已调信号并下变频至基带。三是嵌入式系统部分,由STM32(ST micro ecectics)单片机控制系统的运行,FPGA(Field-Programmable Gate Array)作为基带数字信号处理中枢并驱动外围设备。四是计算机和射频收发机通信接口,采用USB2.0(Universal Serial Bus2.0)协议,利用matlab与C语言的接口完成顶层开发,FPGA状态机完成底层USB驱动。根据上述系统的四个部分,本论文主要从以下几个方面进行了设计和阐述:一是系统整体程序架构与系统数据存储架构的介绍。二是上位机软件对射频收发机的控制方法和两者之间的接口设计。三是软硬结合,设计简易信号发生器、频谱分析模块与调制解调模块等演示及调试模块。四是设计数据收发缓存模块,扩大系统的内存空间,为系统的可扩展性提供保障。与此同时,还给出了诸多实测的图片案例,形象的描述了各模块的相关功能。本系统目前底层软件和通信接口已设计完成,上位机软件模块也进行了初步的开发和测试,为后续完善的软件产品开发奠定了基础。
[Abstract]:In order to perfect the function module of RF transceiver and adapt to the urgent need of wireless communication system with various communication modes, this paper is based on the development of software radio communication technology verification platform project. The software and some hardware of the system are designed, developed and verified. The design of the system is divided into four parts: one is the matlab part of the computer, which is used to process digital information and complete signal modulation and demodulation. Second, the RF transceiver hardware transmission link, the transmission link modulates the baseband signal to the high-frequency carrier for space transmission, the receiving link receives the modulated signal and down converts to the baseband. The third part is the embedded system, which is controlled by STM32(ST micro microcontroller (FPGA Field-Programmable Gate Array) as the baseband digital signal processing center and drives the peripheral equipment. The fourth is the communication interface between computer and RF transceiver, which adopts USB2.0(Universal Serial bus 2.0 protocol and uses the interface between matlab and C language to complete the top-level USB driver. According to the four parts of the above system, this paper mainly designs and expounds the following aspects: the first is the introduction of the whole system program architecture and the system data storage architecture. The other is the design of the control method and the interface between the upper computer software and the RF transceiver. The third is the combination of soft and hard, simple signal generator, spectrum analysis module and modulation and demodulation module and so on demonstration and debugging module. Fourth, design the data receiving and sending cache module, enlarge the memory space of the system, and provide the guarantee for the system expansibility. At the same time, many real picture cases are given, which describe the function of each module graphically. At present, the bottom software and communication interface of the system have been designed and completed, and the software module of the upper computer has also been preliminarily developed and tested, which lays a foundation for the further perfect software product development.
【学位授予单位】：南京邮电大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN92

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