ISAC-Sim

Frequency Shift Keying

Represent 0 and 1 using different frequencies

Real-World Applications

Caller ID, garage door remotes, low-speed industrial telemetry, and early 300bps dial-up modems use FSK. Anti-interference capability is better than ASK. Bluetooth basic version (GFSK) is also a type of FSK.

Experiment Steps

  1. Frequency Hopping: Observe different frequencies for 0 and 1
  2. Phase Continuity: CPFSK maintains phase continuity

Simulation Experiment

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Parameters(Real-time)
f0 (for 0)300 Hz
f1 (for 1)600 Hz
Bit Rate100 bps
SNR20 dB

Functions: models.phy.fmModulate()