Constellation Diagram for 128-QAM Modulation Simulation
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Resource Overview
Detailed Documentation
This MATLAB source file generates constellation diagrams for 128-Quadrature Amplitude Modulation (128-QAM) simulations. The implementation creates a 12x12 grid constellation pattern (with 4 points removed to achieve 128 total points) using uniform spacing in both in-phase and quadrature components. The code includes functionality to map random input symbols to corresponding constellation points, add Gaussian noise to simulate channel conditions, and visualize the resulting constellation with scatter plots. Key MATLAB functions employed in this simulation include qammod for modulation, scatterplot for visualization, and custom scripts for signal-to-noise ratio (SNR) adjustment and error rate calculations. Users can modify parameters such as SNR values, symbol mapping schemes, and visualization properties to analyze different transmission scenarios.
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