QPSK Communication Simulation

This project demonstrates a basic digital communication system using QPSK modulation.

The simulation includes:

• Random bit generation
• QPSK modulation (I/Q)
• AWGN channel
• Coherent demodulation
• Bit Error Rate (BER) analysis

Files

• main_qpsk_simulation.m – generates and transmits the QPSK signal
• qpsk_demodulator.m – demodulates the received signal
• ber_vs_noise.m – evaluates BER performance under noise

Purpose

Educational simulation for understanding the fundamentals of digital communication systems.