Research On The Design And Implementation Of VHF Marine Transceiver Based On SDR

With the development of communication technology,the upgrading of communication system is becoming increasingly frequent,in order to speed up the building of communication system,and to reduce the replacement of hardware system.Using software to control and implement radio transmission has become a hot research issue.Software radio realizes a reconfigurable communications platform by the ideas of openness and modularization,as well as accelerates the building and upgrading of the communication system through the programmable software to control signal processing.This research is supported by the Natural Science Foundation of China"Unauthorized Spectrum Perception and Resource Allocation Algorithms of Cognitive Radio Communication System "(NO.61501078).The capture and launch platform of signal in this subject is the software radio platform.That the successful design of the transmitter and receiver based on software radio is the basis of signal capture and resource allocation algorithm research.In this paper,the building and application of software radio platform made a thorough study from the software radio platform.Software radio system is built through the study of ZYNQ platform and AD9361 radio frequency platform.VHF marine radio design was realized based on software radio platform.VHF marine radio system is deeply researched from aspects of the theoretical analysis and engineering implementation,mainly including baseband processing module and business control system.Baseband processing module including acquisition and playback of audio signal,coding and decoding of stereo signal,modulation and demodulation of frequency and radio frequency data channel.Business control system including radio frequency drive design,user API function and user interface design.This article realizes the design of transceiver system on Soc platform at last.Firstly,the system is divided into different modules,reasonably,and then hardware function is designed by Vivado.And finally to realize the acquisition and playback of audio signal,coding and decoding of stereo signal,modulation and demodulation of frequency and radio frequency data channel.And each part of it is simulated and tested.Software control function is designed by SDK,on processing system side.And realized the driving design of radio frequency.This dissertation utilizes the QT software to design the user interface.Finally,a test on Zedboard development board and AD-FMCOMMS2 radio frequency board validates the feasibility of the system.