Amplitude shift keying

Amplitude-shift keying (ASK) is a form of amplitude modulation that represents digital data as variations in the amplitude of a carrier wave. In an ASK system, a symbol, representing one or more bits, is sent by transmitting a fixed-amplitude carrier wave at a fixed frequency for a specific time duration.

1. What is amplitude shift keying used for?
2. What are the advantages of ASK?
3. What is shift keying technique?

What is amplitude shift keying used for?

Amplitude shift keying (ASK) is a popular modulation technique used in digital data communication for a large number of low-frequency RF applications. The source transmits a large amplitude carrier when it wants to send a '1', and it sends a small amplitude carrier when it wants to send a '0' in its simplest form.

What are the advantages of ASK?

Advantages of ASK modulation

➨It offers high bandwidth efficiency. ➨It has simple receiver design. ➨ASK modulation can be used to transmit digital data over optical fiber. ➨ASK modulation and ASK demodulation processes are comparatively inexpensive.

What is shift keying technique?

Frequency-shift keying (FSK) is a method of transmitting digital signals using discrete signals. The two binary states -- logic 0 (low) and 1 (high) in a binary frequency-shift key mechanism -- are each represented by an analog waveform.