Simulation of 16QAM Digital Communication System

This project involves the simulation of a 16QAM digital communication system. The simulation encompasses modulation and demodulation processes, up-conversion and down-conversion stages, and incorporates additive white Gaussian noise (AWGN) to model real-channel conditions. We will generate corresponding graphical outputs for each processing step to facilitate better understanding of system performance. Through this simulation project, we can deeply investigate the working principles of digital communication systems and analyze how each processing stage affects overall system performance. This investigation will help in better designing and optimizing digital communication systems to meet various communication requirements. Key implementation aspects include generating 16QAM constellations using mathematical mapping algorithms, implementing pulse shaping filters (such as raised-cosine filters) for waveform generation, simulating carrier modulation/demodulation through complex multiplication with sinusoidal signals, and adding AWGN using random number generators with specific signal-to-noise ratio (SNR) calculations. The graphical outputs will include constellation diagrams, eye diagrams, power spectral densities, and bit error rate (BER) versus SNR plots to comprehensively evaluate system performance.