Bit Error Rate Comparison with and without Channel Coding Technology

This program implements a complete digital communication system using 16QAM modulation, where a binary source is processed through (7,4) cyclic code for channel coding. The signal undergoes baseband modulation with a raised-cosine roll-off filter before upconversion to a high-frequency channel. Gaussian white noise is added to simulate channel conditions. The receiver employs matched filtering for demodulation, generates constellation diagrams, uses minimum Euclidean distance decoding for decision making, and performs channel decoding. The implementation compares bit error rates with and without channel coding through comprehensive simulation.