MATLAB Implementation and Comparative Analysis of PAM, QAM, and PSK Modulation Schemes

This MATLAB program implements Pulse Amplitude Modulation (PAM), Quadrature Amplitude Modulation (QAM), and Phase Shift Keying (PSK) modulation schemes. The code provides comprehensive comparison and analysis capabilities for evaluating these three modulation techniques. Key comparison parameters include transmission efficiency (bits per symbol), noise resistance performance (BER analysis under various SNR conditions), and implementation complexity (computational requirements and hardware considerations). The implementation utilizes MATLAB's communication toolbox functions such as pammod, qammod, and pskmod for waveform generation, along with built-in BER analysis tools for performance evaluation. This systematic comparison framework helps researchers and engineers better understand modulation characteristics and select appropriate schemes for specific application requirements, including wireless communications, digital broadcasting, and satellite systems. The program includes configurable parameters for modulation orders, symbol rates, and channel conditions to facilitate flexible testing scenarios.