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Online Simulator for M-ary PSK Signal Generation



M-ary Phase Shift Keying (M-PSK) Simulator

Group bits into symbols and shift the carrier phase.

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Understanding M-PSK Modulation

1. Symbol Mapping: In M-PSK, bits are grouped into blocks of k = log₂(M). Each block represents a decimal symbol. For QPSK (M=4), bits are grouped in 2s (00, 01, 10, 11).

2. Phase Assignment: Each symbol is assigned a specific phase angle (θ) on the unit circle:

θ = (2Ï€ × Decimal Symbol) / M

3. The Signal Equation: The modulated signal for any symbol interval is calculated as:

s(t) = A · cos(2Ï€fct + θ)

4. Key takeaway: Note how the frequency remains constant, but the "starting point" of the wave jumps whenever the bit pattern changes.


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