MATLAB Simulation of Delay Multiplication Method for Estimating Symbol Rate of Modulated Signals

In this paper, we utilize MATLAB simulation to implement the delay multiplication method for estimating the symbol rate of modulated signals. This approach enables more accurate determination of signal modulation schemes and symbol transmission rates. The implementation involves creating time-delayed versions of the original signal using MATLAB's buffer or delay functions, then performing element-wise multiplication between the delayed and original signals. Through systematic variation of delay parameters, we can observe distinctive patterns in the signal waveform and spectral characteristics using MATLAB's plotting and FFT functions. The key algorithm operates by detecting periodic features in the multiplied signal output, where peaks in the autocorrelation-like result correspond to symbol transitions. This MATLAB-based simulation approach provides valuable insights for analyzing modulation parameters, allowing researchers to visualize how different delay values affect signal characteristics through interactive plots and real-time parameter adjustments using MATLAB's GUI capabilities or script-based simulations.