| Throughout the history of the development of mobile communication technology,duplex mode which is used by the mainstream technology of each era is mostly theFDD mode. Today, the4G era will soon coming and analysis of the current globalsituation, FDD technology is still more competitive than TDD technology.My paper is established by the research on wireless data transmissioncommunication system based on FDD mode. The hardware system which is based onhybrid framework of DSP+FPGA is established by the ADC ADS62P49, DACDAC3283, DSP TMS320C6424of TI Company and FPGA XC5VSX50T of XilinxCompany. This hardware system connects to network interface with a host，thereby itcan implement IP business transmission.Not only the research background, significance and development status ofdomestic but also the development trend are discussed in this thesis. After the analysisof advantages and disadvantages of two main baseband digital processing hardwareplatform, we designed a system framework which is based on hybrid framework ofDSP+FPGA and then we given the main function definition of DSP and FPGA. Then,according to the actual situation of the system, we have completed the chip select andgiven the whole system hardware platform. The hardware platform is divided into fivepart and a detailed introduction and a specific circuit design of the implementation isgiven for ADC module, DAC module, FPGA module, DSP module and power module.Then, a detailed analysis of a high-speed PCB design and the key signal’s simulation isgiven，and then the modern high-speed PCB technology has been used to complete thedesign of PCB of entire system, and therefore the reliability and stability of the platformis achieved. Finally, the hardware platform are debugged, and show us some results.The research supports of bias of theory and foundation of practice for design of thebaseband hardware platform based on FDD and it shows application significance andapplication values. |
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