Design Of Digital IF Modulator And Demodulator Of Software Radio

Software Radio stands for the new direction of development of the wireless telecommunication technology in the future, and it is another transform of telecommunication system after that from immobility to mobility and from analog to digital. It is possible to communicate among some communication systems by Software Radio, and it appeases the development requirement of modern communication system. The technology of modulation and demodulation is the key of the Software Radio system and it determines the capability of the system.The paper provides the design of hardware of digital IF modulator and demodulator of Software Radio which includes Digital Signal Processor, Micro Control Unit and AD/DA convertor etc. The design of quadrature modulation program of analog , digital signal of baseband and quadrature demodulation program of IF signal are presented in the paper. The hardware platform of digital IF modulator and demodulator of Software Radio is in the charge of MCU which works with LCD display...