Amplitude Modulation

TITLE:       Amplitude Modulation

OBJECTIVE:  In this lab I have learned the basics of Amplitude modulation and how to implement this task in LAB VIEW.

PROCEDURE:

Overview:

For transferring the signal from one place to another long distance place we use   modulation. Modulation is a process in which characteristics of a high-frequency carrier signal are altered to convey information contained in a lower-frequency message for long distances. Though it is theoretically possible to transmit information without modulating the data, it is far more efficient to send messages by modulating the information onto a carrier wave.

Advantages of Modulation:

High frequency waveforms require smaller antennae for reception, efficiently use available bandwidth, and are flexible enough to carry different types of data. There are a variety of modulation schemes available for both analog and digital modulation.

Programming:

Following are the main formulas that are used in amplitude modulation in LAB VIEW.

m(t)= Am*Sinwmt

c(t)=   Ac*Sinwct

s(t)=[1+m(t)/Ac]*c(t)]

CONCLUSION:

In this lab we learned all the important concepts and formulae associated with Amplitude modulation and also learned its implementation in LAB VIEW.