Explore MATLAB source code curated for "频率调制" with clean implementations, documentation, and examples.
MATLAB functions beginning with the "fm" prefix generate various frequency-modulated signals, including constant, hyperbolic, linear, and parabolic frequency modulation types, enabling simulation and analysis of different modulation techniques.
MATLAB implementation for frequency synthesis and frequency modulation functions, tested and verified. Users need to create basic waveforms and utilize provided code for signal processing operations, including algorithm explanations for waveform generation and modulation techniques.
Implementation of frequency modulation using a 1000 Hz carrier wave, with additive white Gaussian noise introduced before demodulation. Demodulation is performed at signal-to-noise ratios of 0.001, 0.01, 0.05, 0.1, and 0.3, followed by plotting of the modulated signals to analyze noise impact.
Digital frequency modulation, also referred to as Frequency-Shift Keying (FSK), with binary FSK denoted as 2FSK. This digital modulation technique uses the frequency of a carrier wave to transmit digital messages by controlling the carrier's frequency based on the input data. In 2FSK signals, the symbol "1" corresponds to one carrier frequency, while the symbol "0" corresponds to a different carrier frequency, with instantaneous switching between frequencies. Implementation often involves generating two distinct sinusoidal waveforms and switching between them using digital logic or lookup tables in code.