2DPSK调制解调系统设计

ABSTRACTBinary differential phase shift keying modulation is relatively short two-phase,denoted by 2DPSK.It is one of the most commonly used modulation in datacommunications,this approach has the advantage of simple,easy to implement.2DPSK waveform is different from 2PSK waveform.2DPSK waveform does notcorrespond to the same phase of the same number of information symbols,and therelative phase of the before and after symbol determine the only information symbols.In order to make the digital signal transmitted in a communication channel,we mustuse digital baseband signal to modulate the carriert,which can make the signal matchthe channel characteristics.Modulation and demodulation technology is an importantmeans to achieve modern communications,modulation and demodulation of digitalcommunications theory,and it can provide an effective way of great significance.Matlab toolbox of communication in the field of communications can be used forresearch,development,system design and simulationThis paper studies the use of Matlab Simulink software to design 2DPSK modemsystem.First it introduces the basic principles of 2DPSK modulation anddemodulation and Matlab Simulink simulation software.Then according to theprinciple of 2DPSK modulation and demodulation,it builds the simulation model andanalysis of simulation results.Finally,in the 2DPSK modulator and 2DPSKdemodulator module of Matlab Simulink,it implements the design of 2DPSK modemsystem.Key words:Matlab:2DPSK:Modulate:Demodulate0