Simulation Model of BPSK over Rayleigh Fading Channels

This document presents a comprehensive simulation model for Binary Phase Shift Keying (BPSK) modulation operating over Rayleigh fading channels using Simulink. The implementation includes configurable channel blocks where users can switch between Rayleigh fading and Additive White Gaussian Noise (AWGN) channel models to conduct comparative performance analysis. Through Monte Carlo simulations, the model demonstrates the significant bit error rate (BER) degradation caused by multipath fading effects, visualized through BER vs. Eb/N0 curves. The Simulink architecture typically incorporates a BPSK modulator, Rayleigh fading channel block (modeling multipath propagation with Doppler spread options), AWGN channel block, and coherent BPSK demodulator with error rate calculation components. This simulation framework helps engineers quantify fading impacts on digital communication systems and provides practical insights for designing robust wireless communication systems with appropriate mitigation techniques such as diversity combining or error correction coding.