The Research And Implementation Of The Channelized Receiver Based On Software Radio

The basic concept of software radio is that hardware is the basic platform of wireless communication. More and more function of personal communication is realized by software. Software radio is the design of wireless communication which realizes the hardware connection by software. This paper mainly deals with the architecture of software radio which is based on broad band intermediate frequency band-pass sampling. Some parts of the key technologies in receiver are studied. Based on the realization of the hardware platform of the software radio, wideband Digital Down conversion and digital channelized receiving technology are mainly studied and realized. Combined with the difficulties in FH (frequency-hopped) signal interception, the application of channelized receiver which is based on the software radio in receiving FH (frequency-hopped) signal is particularly introduced. The main contents include:1. Based on the analysis of the perpendicular Digital Down Conversion technology and the principle of the Digital Down Conversion technology which is based on multiphase filtering, the perpendicular Digital Down Conversion technology is realized in project.2. In order to receive the signal of all bands, a new channelized receiving algorithm is proposed based on the structure of multiphase filtering digital channelized receiver according to meet the requirements of the project. The algorithm is realized in project, which the realization scheme in project of the core module FFT is optimized.3. The receiving algorithm of the commonly used frequency-hopped signal is analyzed. The receiving scheme of the frequency-hopped signal interceptor based on software radio is present.4. The processing hardware platform of the software radio and the debugging of the whole hardware circuit are realized.