MATLAB Source Code for BPSK Receiver Using Direct Sequence Spread Spectrum Communication

This MATLAB source code implements a BPSK receiver for direct sequence spread spectrum communication systems. The code provides a complete implementation of receiver functionality for DSSS systems using BPSK modulation. Key algorithmic components include signal demodulation, chip synchronization, and despreading operations implemented through MATLAB programming. The source code demonstrates practical implementation of critical receiver functions: carrier recovery using phase-locked loops, correlation-based despreading with pseudo-random noise (PN) sequences, and timing synchronization algorithms for chip alignment. The implementation uses MATLAB's signal processing toolbox for operations like matched filtering, cross-correlation detection, and error rate calculation. This resource serves as an excellent reference for students and professionals in wireless communications, offering insights into both theoretical principles and practical implementation aspects of DSSS technology. Researchers can modify and optimize the code to enhance system performance parameters such as bit error rate, processing gain, and anti-jamming capabilities. The modular structure allows for easy experimentation with different spreading codes, synchronization techniques, and channel conditions.