Research On The Key Technology Of Multi-DSP Platform On The Basis Of Software Radio

Software Radio (SR) has gained such a lot interest over the past few years that it has been recognized to be the development orientation of communication and radio technology in the future. It breaks through the limitation of traditional radio in simple function and bad expansibility, focuses on liberating the communication system from the hardware's bondage and advances the new design idea which is based on the simplest open and common platform and uses updateable and reconfigurable applications to realize all kinds of radio function.On the basis of the basic theory of the Software Radio, The essay mainly studies such theories as the signal sampling and the signal's digital orthogonal transform. On the other hand, from comparing all the various hardware structures in use these years at home and overseas, the essay also discusses the structure of the Software Radio in detail. Considering the main task of the platform built in this design is to accomplish the signal's digital orthogonal transform, the essay adopts three DSP processors to set up the core processing unit. With respect to the points discussed above, the whole system adopts the Software Radio structure based on the transform. To gain the universality of the Software Radio, that is to admit all the modification methods. We make a discuss on the demodulation of all kinds of the signals. At the end of the paper we have introduced the implementation of system.