Interactive visualization of analog and digital modulation schemes. Enter text and watch how different modulation techniques encode data onto carrier waves. See real-time waveforms, constellation diagrams, and understand the mathematics behind wireless communication.
Modulation is the process of encoding information onto a carrier wave by varying one or more of its properties (amplitude, frequency, or phase). This tool visualizes how different modulation schemes work in real-time.
Formula: s(t) = [A + m(t)] · cos(2πfₒt)
Varies the amplitude of the carrier wave based on the message signal.
Formula: s(t) = A · cos(2πfₒt + β∫m(t)dt)
Varies the frequency of the carrier wave based on the message signal.
Formula: s(t) = A · cos(2πfₒt + kₚm(t))
Varies the phase of the carrier wave based on the message signal.
Formula: s(t) = A₁ · cos(2πfₒt) for bit 1, A₀ · cos(2πfₒt) for bit 0
Digital modulation that switches between two amplitude levels.
Formula: s(t) = A · cos(2πf₁t) for bit 1, A · cos(2πf₀t) for bit 0
Digital modulation that switches between two frequencies.
Formula: s(t) = A · cos(2πfₒt + φ), where φ = 0° or 180°
Digital modulation that switches between phase states.
Formula: s(t) = I(t)cos(2πfₒt) - Q(t)sin(2πfₒt)
Combines amplitude and phase modulation for high data rates. Multiple bits encoded per symbol.
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