ASK,FSK,PSK

What does ASK stand for in the context of signal modulation?

• Amplitude Shift Coding

• Amplitude Shift Keying

• Analog Signal Keying

• Advanced Signal Kinesis

Which type of modulation is commonly used in digital communication systems?

• Amplitude Modulation (AM)

• Phase Shift Keying (PSK)

• Frequency Shift Keying (FSK)

• Quadrature Amplitude Modulation (QAM)

In PSK, how many distinct phases are used to represent the binary digits?

• 4

• 3

• 5

• 2

What is the main advantage of FSK over ASK?

• Higher noise immunity

• Higher power consumption

• Lower data rate

• Less bandwidth efficiency

What is the key difference between BPSK and QPSK modulation?

• Amplitude of the signal

• Number of phase shifts used

• Number of frequency shifts

• Frequency of phase shifts

Explain the concept of phase shift keying (PSK) in signal modulation.

• Phase Shift Keying (PSK) is an analog modulation technique.

• Phase Shift Keying (PSK) is a digital modulation technique where the phase of the carrier signal is varied to represent digital data.

• In PSK, the amplitude of the carrier signal is adjusted to encode digital information.

• PSK involves varying the frequency of the carrier signal to represent digital data.

How does frequency shift keying (FSK) differ from amplitude shift keying (ASK)?

• FSK varies the amplitude of the carrier signal, while ASK varies the frequency.

• FSK and ASK both vary the amplitude of the carrier signal.

• FSK varies the frequency of the carrier signal, while ASK varies the amplitude.

• FSK and ASK both vary the frequency of the carrier signal.

What are the applications of phase shift keying (PSK) in communication systems?

• PSK is used in analog modulation techniques

• PSK is used in digital modulation, wireless communication, satellite communication, and data transmission over optical fibers.

• PSK is only applicable in wired communication systems

• PSK is primarily used for image processing

What are the drawbacks of using amplitude shift keying (ASK) in communication systems?

• Susceptibility to noise interference, lower data transmission rates, and the need for a linear amplifier.

• Higher data transmission rates, immunity to noise interference, and the need for a non-linear amplifier

Compare and contrast ASK, FSK, and PSK modulation techniques.

• ASK modulates amplitude, FSK modulates phase, and PSK modulates frequency of the carrier signal.

• ASK modulates amplitude, FSK modulates frequency, and PSK modulates phase of the carrier signal.

• ASK modulates phase, FSK modulates amplitude, and PSK modulates frequency of the carrier signal.

• ASK modulates frequency, FSK modulates amplitude, and PSK modulates phase of the carrier signal.