MATLAB Implementation of Direct Sequence Spread Spectrum (DSSS)

I have developed a MATLAB program for Direct Sequence Spread Spectrum (DSSS) implementation that provides practical utility for communication system simulation and analysis. This program comprehensively covers all critical stages of DSSS communication including signal generation, modulation, spread spectrum processing, transmission simulation, and demodulation procedures. The implementation features PN sequence generation for spreading codes, BPSK/QPSK modulation schemes, and correlation-based despreading algorithms with proper synchronization mechanisms. The code structure employs MATLAB's communication toolbox functions while implementing custom algorithms for spreading gain calculation and bit error rate (BER) performance analysis. Key components include: - Pseudorandom Noise (PN) sequence generation using linear feedback shift registers - Data modulation with configurable spreading factors - AWGN channel modeling for transmission simulation - Correlation detectors for signal despreading and recovery - BER calculation modules for system performance evaluation This implementation serves as an educational tool for understanding DSSS principles and practical implementation techniques. The modular code design allows for easy parameter modification and system extension. For any technical questions or additional support requirements regarding the code implementation, please feel free to contact me. This enhanced content provides both theoretical context and practical implementation details suitable for international technical audiences. Thank you for your interest in this DSSS MATLAB implementation.