Transmission of 2FSK over Gaussian and Rayleigh Channels with Communication System Simulations

This article provides a detailed analysis of 2FSK signal transmission performance through Gaussian and Rayleigh channels, accompanied by corresponding simulation models for verification. The implementation typically involves generating 2FSK signals using frequency shifting methods and analyzing bit error rate (BER) performance under different channel conditions using MATLAB's communication toolbox functions. Additionally, we present an OFDM system simulation model that demonstrates orthogonal subcarrier allocation and cyclic prefix implementation to combat multipath interference. The simulation includes key components like IFFT/FFT operations for modulation/demodulation and channel equalization techniques. Furthermore, we explore QPSK modulation schemes through Simulink simulations, detailing the constellation mapping process and phase shift keying implementation using Simulink's communication blockset. These simulation experiments incorporate error detection mechanisms and performance metrics calculation to help researchers better understand the practical applications and performance characteristics of these communication technologies in real-world scenarios.