宽带无线数据传输64QAM突发模式解调器设计

【作者】 胡旸；

【导师】 陈文正；

【作者基本信息】 浙江大学 ， 通信与信息系统， 2003， 硕士

【摘要】 随着无线网络技术的发展，不断增加的业务，宽带化、数字化成为无线通信领域里的趋势，宽带无线数据传输系统成为“最后一公里”工程的理想的解决方案，克服了传统本地环路及铜的传输瓶颈，也适合无线通信的灵活性，成为通信发展的趋势和热点。 基于数字通信的全数字调制和解调成为整个数据传输的核心，采用软件无线电的结构和采用FPGA的架构各有优势，但在低功耗的应用环境中，FPGA显得更有优势。而64QAM的调制方式则更高效的利用了频带，64QAM突发模式解调方案适合于无线随参信道的通信传输质量的需求，它能提高了数据的传输效率，是一种广泛采用的调制方式。本论文是对突发性数据业务的突发模式64QAM解调器进行设计。 第一章简述了宽带无线数据传输系统，提出了全数字调制与解调的方案，可以采用软件无线电和FPGA实现，在特殊应用环境里对64QAM突发模式解调器进行FPGA硬件设计。 第二章描述了64QAM的调制解调理论，提出了突发模式的算法方案，分析了其中的理论知识。 第三章在确定算法的基础上应用仿真工具MATLAB进行系统仿真，建立整个系统框架，描述了系统仿真流程。又仿真基础上采用FPGA进行硬件设计，结合硬件设计的特点，优化模块的设计。 第四章分析所设计系统的性能指标，与理论值相比较来衡量系统的正确性。更多还原

【Abstract】 With the development of wireless network and the demand of various businesses,bandwidth and digitalization have become the trend in the wireless communication field. The bandwidth wireless data transmission system becomes the ideal solution of the project of "the last kilometer" and overcomes the shortcoming of traditional local loop and the transmission bottleneck of the copper and is suitable for the flexibility of wireless communication.Full digital modulation and demodulation become a key technology based on digital communication. There are advantages to adopt the structure of the software wireless and frameworks of FPGA,but FPGA seems to have advantages even more in the application of the low power. 64QAM modulation has a high utilization ratio of frequency bands. The demodulation scheme of the burst mode 64QAM is suited to satisfy the demand for quality in wireless communication and it can improve the transmission efficiency of the data,so it is adopted extensively. My paper is to design the burst mode 64 QAM demodulator.Chapter 1 sketches bandwidth wireless data transmission system,puts forward full digital modulation and demodulation and construction of software wireless and FPGA. To design the burst mode 64 QAM demodulator in the special applications.Chapter 2 describes the modulation and demodulation theory of 64QAM,propose the algorithm scheme of the burst mode and analyze the theory knowledge among them .Chapter 3 applies MATLAB to construct and emulate the system on the basis of confirming the algorithm,describe the systematic emulation procedure. And discuss how to design the hardware in the base of MATLAB and optimize the module designing.Chapter 4 analyzes the performance in contrast of theory formula.更多还原