超短波无线通信软件无线电数字平台的设计与实现
发布时间：2018-11-15 19:29
【摘要】：理想的软件无线电架构由可重新配置的数字无线电、植入阻抗合成器的软件可调无线电和软件可调天线系统三个主要单元组成。软件无线电最初被认为是在协同工作、广义范围内无线互通、多模式、多标准等方面具有广阔前景的无线电通信系统应用解决方案,是未来无线通信和全球电信技术发展的新方向。本方案的目的是实现一个通用化、开放化、模块化架构的软件无线电硬件平台,由于硬件如A/D,D/A转换和DSP和FPGA等处理器性能的限制,我们无法采用理想软件无线电模型的架构。基于当前集成电路技术和无线通信技术的发展,我们采用了中频数字化的系统框架,即先通过射频前端将射频信号转换至中频,数字平台实现中频和基带之间的转换,然后再由基带单元进行信号处理。软件设计上采用基于SCA架构的统一处理体系,实现组件化、模块化实现方式,方便裁剪和异构,和数字硬件平台一起构建了实用的软件无线电通信平台。本方案实现的软件无线电架构,核心单元是一个基带信号数字处理硬件平台,主要设计内容有:软件无线电理论的研究、数字平台设计与实现、总体方案的论证编写、核心处理器的选择、电路原理图设计、PCB实现、数字平台的调试与验证,硬件底层驱动程序的编写。概述了软件无线电的发展历程及现状,阐述了信号采样理论与多速率信号处理理论等数字信号处理相关理论基础。本方案采用DSP+FPGA+GPP的框架作为本次设计指导思想。整个硬件平台分为黑边基带单元和红边业务接口单元两部分。DSP基带板的核心芯片采用TI的TMS320C6416,FPGA芯片采用的是Xilinx公司VirtexII系列FPGA中的XC2V3000。设计使用Cadence 15.5完成了电路原理图和高速PCB设计。在理论分析的基础上,结合基带数字电路技术发展,最终设计实现了一款通用的软件无线电架构的数字硬件平台,通过GPP+FPGA+DSP的框架架构实现了基带数字电路,最后通过单板调试和整机功能测试,正确实现了数字平台的设计功能。
[Abstract]:The ideal software radio architecture consists of three main units: a reconfigurable digital radio, a software tunable radio embedded in an impedance synthesizer and a software tunable antenna system. Software radio was originally considered as a promising solution for wireless communication systems with broad prospects for collaborative work, wireless interworking in a broad sense, multi-mode, multi-standard, and so on. Is the future wireless communication and the global telecommunication technology development new direction. The purpose of this scheme is to implement a software radio hardware platform with a general, open and modular architecture, which is limited by the performance of hardware such as A / D / A conversion and DSP and FPGA processors. We cannot adopt the architecture of the ideal software radio model. Based on the development of current integrated circuit technology and wireless communication technology, we adopt the system framework of if digitization, that is, the RF signal is converted to if through RF front-end, and the digital platform realizes the conversion between if and baseband. The signal is then processed by the baseband unit. In software design, a unified processing system based on SCA architecture is adopted to realize componentization and modularization, which is convenient for cutting and heterogeneous, and a practical software radio communication platform is constructed together with the digital hardware platform. The core unit of the software radio architecture is a hardware platform for baseband signal digital processing. The main design contents are: the research of software radio theory, the design and implementation of digital platform, the argumentation and compilation of the overall scheme. Core processor selection, circuit schematic design, PCB implementation, digital platform debugging and verification, hardware bottom driver programming. In this paper, the development and present situation of software radio are summarized, and the related theories of digital signal processing, such as signal sampling theory and multi-rate signal processing theory, are expounded. This project adopts the framework of DSP FPGA GPP as the guiding principle of this design. The whole hardware platform is divided into two parts: black edge baseband unit and red edge service interface unit. The core chip of DSP baseband board is TI's TMS320C6416,FPGA chip, which is the XC2V3000. of VirtexII series FPGA of Xilinx Company. The circuit schematic diagram and high speed PCB are designed with Cadence 15. 5. On the basis of theoretical analysis, combined with the development of baseband digital circuit technology, a digital hardware platform of a general software radio architecture is designed and implemented. The baseband digital circuit is realized through the framework of GPP FPGA DSP. Finally, the design function of the digital platform is realized correctly through the debugging of the single board and the testing of the function of the whole machine.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN925
本文编号：2334227
[Abstract]:The ideal software radio architecture consists of three main units: a reconfigurable digital radio, a software tunable radio embedded in an impedance synthesizer and a software tunable antenna system. Software radio was originally considered as a promising solution for wireless communication systems with broad prospects for collaborative work, wireless interworking in a broad sense, multi-mode, multi-standard, and so on. Is the future wireless communication and the global telecommunication technology development new direction. The purpose of this scheme is to implement a software radio hardware platform with a general, open and modular architecture, which is limited by the performance of hardware such as A / D / A conversion and DSP and FPGA processors. We cannot adopt the architecture of the ideal software radio model. Based on the development of current integrated circuit technology and wireless communication technology, we adopt the system framework of if digitization, that is, the RF signal is converted to if through RF front-end, and the digital platform realizes the conversion between if and baseband. The signal is then processed by the baseband unit. In software design, a unified processing system based on SCA architecture is adopted to realize componentization and modularization, which is convenient for cutting and heterogeneous, and a practical software radio communication platform is constructed together with the digital hardware platform. The core unit of the software radio architecture is a hardware platform for baseband signal digital processing. The main design contents are: the research of software radio theory, the design and implementation of digital platform, the argumentation and compilation of the overall scheme. Core processor selection, circuit schematic design, PCB implementation, digital platform debugging and verification, hardware bottom driver programming. In this paper, the development and present situation of software radio are summarized, and the related theories of digital signal processing, such as signal sampling theory and multi-rate signal processing theory, are expounded. This project adopts the framework of DSP FPGA GPP as the guiding principle of this design. The whole hardware platform is divided into two parts: black edge baseband unit and red edge service interface unit. The core chip of DSP baseband board is TI's TMS320C6416,FPGA chip, which is the XC2V3000. of VirtexII series FPGA of Xilinx Company. The circuit schematic diagram and high speed PCB are designed with Cadence 15. 5. On the basis of theoretical analysis, combined with the development of baseband digital circuit technology, a digital hardware platform of a general software radio architecture is designed and implemented. The baseband digital circuit is realized through the framework of GPP FPGA DSP. Finally, the design function of the digital platform is realized correctly through the debugging of the single board and the testing of the function of the whole machine.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN925
【参考文献】
相关期刊论文 前1条
1 沙燕萍,皇甫伟,曾烈光;异步FIFO的VHDL设计[J];电子技术应用;2001年06期
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