Advantages & Disadvantages

1. 8/30/2018 ASK Advantages | ASK Disadvantages | Amplitude Shift Keying
http://www.rfwireless-world.com/Terminology/Advantages-and-Disadvantages-of-ASK.html 1/4
RF Wireless World
ASK Advantages | ASK
Disadvantages | Amplitude Shift
Keying
This page covers advantages and disadvantages of ASK.ASK stands for
Amplitude Shift Keying. Both ASK advantages and ASK disadvantages
are covered.
Following are the silent features of ASK modulation.
• ASK is digital modulation technique in which carrier is analog and data
to be modulated is digital. Modulated output is analog.
• Here strength or amplitude of carrier signal is varied to represent
binary 1 and binary 0 data inputs; While frequency and phase of the
carrier signal remain constant. Voltage levels are left to designers of the
modulation system.
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2. 8/30/2018 ASK Advantages | ASK Disadvantages | Amplitude Shift Keying
http://www.rfwireless-world.com/Terminology/Advantages-and-Disadvantages-of-ASK.html 2/4
Figure-1: ASK Modulation
Refer ASK vs FSK vs PSK >> for difference between ASK, FSK and
PSK digital modulation techniques.
ASK Advantages
Following points summarizes ASK advantages:
➨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.
➨Its variant OOK is used at radio frequencies to transmit morse codes.
ASK Disadvantages
Following points summarizes ASK disadvantages:
➨It offers lower power efficiency.
➨ASK modulation is very susceptible to noise interference. This is due
to the fact that noise affects the amplitude. Hence another alternative
modulation technique such as BPSK which is less susceptible to error
than ASK is used.
Also refer advantages and disadvantages of FSK Modulation >> and
PSK Modulation >>.
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Advantages of Ask