Abstract : modulation of the communication system has a very important role. Through modulation, not only for the removal of the spectrum, the spectrum modulation signal the removal of the desired position. thus modulation signal converters suitable for dissemination to the strength of the signal, but its transmission system effectiveness and the reliability of transmission has a significant impact, Modulation often determines a communications system performance. This paper introduces a bilateral amplitude modulation band then leads to the principle of this design using MATLAB software also conducted the orientation and Simulink of relevant knowledge. Then combine existing knowledge of conventional bilateral amplitude modulation frequency band and inhibition with bilateral carrier amplitude modulation frequency modulation into two OK a simple analysis and simulation. Finally, the current design of summing up and planning as well as their future planning, look at the telecommunications industry do something.
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