Amplitude Shift Keying coding

1. What is FSK code?
2. Which coding technique is usually used in PSK modulation?
3. How do I create an ASK signal?

What is FSK code?

What is frequency-shift keying (FSK)? 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.

Which coding technique is usually used in PSK modulation?

BPSK (Binary Phase Shift Keying) – a coherent modulation technique that requires synchronization between the transmitter and the receiver using two phase values: –180° and +180°, encoded as a single bit in the binary code as a logical 0 or 1.

How do I create an ASK signal?

There are two methods of generating ASK signals. The product x(t) contains a series of AM waves with carrier frequencies that are harmonic multiples of the fundamental frequency f_c. A band pass filter is used to extract any of the harmonics, thus generating the ASK signal.