2012•Communications technologyRequires access

Simulation Design of 64-QAM Transmission System based on Optisystem

MA Yong-hong

Abstract

64-QAM,as a highly efficient digital modulation method,is now widely used in various communication systems.The article first makes a theoretical study on the 64-QAM modulation /demodulation,then with the help of Optisystem simulation software,the simulation model of 64-QAM transmitter / receiver is constructed,and its receiver and transmitter modules are analyzed in detail.Finally,the transmission performance of the model is simulated and verified,and the simulation results indecate that the constellation of 64-QAM in receiver is clear,and the 64-QAM modulation format could effectively implement the transmission of data signals.The model could provide a theoretical guidance for the practical engineering design.

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Key concepts: Computer science, Transmitter, QAM, Quadrature amplitude modulation, Transmission (telecommunications), Demodulation, Modulation (music), Electronic engineering