What is need to modulation in communication system?

Answer 1

Need for modulation

1) to reduce the antenna height

2) to multiplex the more number of signals

3) to reduce the noise & distortions

4) to narrow banding the signal

5) to reduce equipment

Answer 2

1. It increases the power of the signal as power is proportional to the square of frequency.

2. It provides a successful combat against noise and distortion.

Answer 3

through modulation we can know wheather we will go for multiplexing or not.

Answer 4

to transmit the signal from one place to another we need it. Modulation is similar as throwing a paper folding with stone appu b mule