Demodulating 7x Sequential BFSK Signals

1. What modulation is performed in FSK?
2. How does FSK modulation work?
3. What does the FSK signal represent?
4. How FSK signal is generated?

What modulation is performed in FSK?

Frequency Shift Keying FSK is the digital modulation technique in which the frequency of the carrier signal varies according to the digital signal changes. FSK is a scheme of frequency modulation.

How does FSK modulation work?

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.

What does the FSK signal represent?

Frequency Shift Keying (FSK) is a method of transmitting digital data by shifting the frequency of a carrier signal to represent binary 1s and 0s.

How FSK signal is generated?

FSK signals can be generated at baseband, and transmitted over telephone lines (for example). In this case, both f1 and f2 (of Figure 2) would be audio frequencies. Alternatively, this signal could be translated to a higher frequency. Yet again, it may be generated directly at 'carrier' frequencies.