Design And Implementation Of Software Defined Radio Digital Receiving System Module

With the rapid development of the radio system, whether in military or civilianwireless communication, the traditional method of wireless communication systemdesign, which is based on hardware system, can’t meet the demand for multi-modecommunication. So the idea of software radio begins to birth. Software defined radiois another revolution in wireless field. Software defined radio is based on openarchitecture and solves effectively the problem of wireless communication betweeneach other. The software engineering technology is adopted to realize flexible andadaptative wireless communication in hardware system. So software defined radio hasimportant research value and practical value.The development and research status of software defined radio is firstly studiedin the paper. The software defined radio digital receiving principle, which includingsignal sampling principle, digital down converter technology and multi-rate signalprocessing technology, is introduced in detail and the structure of software definedradio is analyzed. A kind of less aliasing and non-blind region channelized structure isgiven through deriving software defined radio digital channelized model. Thestructure of software defined radio digital channelized is proved connect by computersimulation. The software defined radio digital receiving system is designed and thedesign plan is introduced and every hardware circuit design is described in detail. Thesoftware defined radio digital channelized structure is realized in the hardware system.All functions are realized on FPGA and it has the feature of programmable on line.The every main function module of software defined radio digital channelizedstructure and the design and implementation are described in detail. The FPGAhardware resource usage of software defined radio digital channelized structure isestimated. The software defined radio digital receiving system has strong popularity.The software program design is changed to complete different functions in order tomeet the needs of different systems.