Question

what is modulation?explain why medulation is naaded.​

Answer 1

Answer:

Modulation allows us to send a signal over a bandpass frequency range. If every signal gets its own frequency range, then we can transmit multiple signals simultaneously over a single channel, all using different frequency ranges. Another reason to modulate a signal is to allow the use of a smaller antenna.

Why Modulation is Required in Communication

1) Ease of Radiation (To reduce the antenna size)

2) To reduce the interference

3) To allow the multiplexing of the different signals

Explanation:

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Answer 2

Answer:

Modulation is the process of converting data into electrical signals optimized for transmission. Modulation techniques are roughly divided into four types: Analog modulation, Digital modulation, Pulse modulation , and Spread spectrum method.

Modulation allows us to send a signal over a bandpass frequency range. If every signal gets its own frequency range, then we can transmit multiple signals simultaneously over a single channel, all using different frequency ranges. Another reason to modulate a signal is to allow the use of a smaller antenna.

I hope it will help you.