| Without the constraint of hardware structure, software radio is becoming one of the best ways to solve the problems of co-operation among different modes and to develop more services. It is of magnitude commercial and military value.The most main characteristic of electronic warfare is that it has the wide frequency band, a great deal of signal type, moreover, the work pattern is passive. So, we must research and develop a kind of receiver with good expansibility that the working frequency band is wide, and the adaptive capacity of the wave form is strong. Channelized receiver with poly-phase filters is an appropriate solution.In this thesis, the design and implementation of channelization processing are studied systematically. Meanwhile, we put forward a new implementation method and get some conclusions and achievements. The main content of the thesis is as follows:1. Several kinds of systematic structure of software radio receiver are studied, analyzed and compared. And we carry on carefully the theoretical research and systematic analysis of channelized receiver with poly-phase filters. In addition, we carry on simulations for channelization processing module.2. According to the project's requirement, we analyze the technological difficult points while realizing it, and propose a new realization structure based on SDRAM. Meanwhile, we carry on feasibility analysis and provide systematic block diagram.3. According to the system design, the function modules of the system are analyzed and realized.4. We carry on system testing of the channelization module and analyze the experimental results.5. The general work of this thesis is summarized and the further research direction of channelization processing is pointed out. |
