Software Radio Design And Study On Wireless Telecommunicatin System

The software radio is a novel system which recently appears for implementing wireless telecommunication and has been an important subject in the field of radio application and has brought more and more attention home and abroad.The up-to-date study status quo on the software radio home and abroad is tracked and the basic theories on the software radio are demonstrated in detail. Then the personal computer and Windows operating system are respectively chose as the common hardware platform and the software one, which is based on the project argument. The whole architecture of software radio system is divided into five modules including wide band antenna and radiant frequency front-end module, wide band A/D and D/A one, converter one, digital signal processing one with high speed and instruction processing one. Accordingly some technical nodi are analyzed and key techniques to solve these questions are stated in the every module at length. During the software design, the modularization design of the software radio is accomplished with Borland C++ Builder and the main module program is written so that the system can work in three different ways such as receiver, transmitter and gateway. FIR digital filter is programmed with window function method in the filter module and the thread design method is used to process data, which improves the system real-time. In the end the paper gives the error analysis and points out the error source in the course of data processing.