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Which modulation scheme is also called as on-off keying method?
- AASK
- BFSK
- CPSK
- DGMSK
Answer not set
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ASK:
- 1 is represented by presence of carrier signal
- 0 is represented by absence of carrier signal
- Thus, there is on-off of carrier and hence the modulation is called as on-off keying.
FSK:
- 1 is represented by high frequency carrier
- 0 is represented by low frequency carrier
PSK:
- Symbols for 0 and 1 have same frequency but there is 180° phase difference between the two.
- 1 is represented by presence of carrier signal
- 0 is represented by absence of carrier signal
- Thus, there is on-off of carrier and hence the modulation is called as on-off keying.
FSK:
- 1 is represented by high frequency carrier
- 0 is represented by low frequency carrier
PSK:
- Symbols for 0 and 1 have same frequency but there is 180° phase difference between the two.