Rayleigh Channel Simulation Noise Signal Generation and Processing

The Rayleigh channel simulation noise signal is generated using the MATLAB function randn(1,N), which produces N pseudo-random numbers from a normal distribution with zero mean and unit variance. During each iteration, the noise amplitude is scaled using the corresponding standard deviation. Finally, the input signal and noise signal are summed to obtain the output signal. This implementation demonstrates fundamental noise modeling for wireless communication channel simulations.