The Study And Realization Of The Transmitter IF Digitalization

Lately, the technology of Software Radio has been greatly developed. By digitizing the signal and using DSP technology, it could improve upon not only the performance of the radio system but also its agility and compatibility, so Software Radio has been applied to many fields, such as military communication and commercial communication. The thesis has participated in the research of Software Radio and is focused on the design and realization of the Software Radio structure.The content of the thesis can be summarized as follows:First, the basic concept and key techniques are discussed, with the emphasis on the several eclectic structure to implement the Software Radio.Second, the thesis discussed the theory of multi-rate signal process and the theory in quadrature transform.Third, the signal modulation algorithm of the Software Radio is introduced.Finally, basing on masteries of DSP and other chips, circuit and DSP software programming for IF digitization system are completed.