Simulation Analysis of Bit Error Rate in Direct Sequence Spread Spectrum Communication Systems and Comparison of PN Code Synchronization Methods

In this paper, we conduct MATLAB simulations to analyze the bit error rate performance of direct sequence spread spectrum (DSSS) communication systems and compare different PN code synchronization methods. Our simulation experiments utilize MATLAB's Communications Toolbox to implement DSSS transceivers with various synchronization algorithms including sliding correlator, matched filter, and early-late gate synchronization techniques. Through parameter adjustments and comparative result analysis, we investigate the system performance under different signal-to-noise ratios and synchronization scenarios. The implementation involves generating PN sequences using MATLAB's pn sequence generators, modulating data with BPSK modulation, and analyzing synchronization performance through cross-correlation computations. Our study provides quantitative comparisons of synchronization accuracy and bit error rate performance, concluding with recommendations for system optimization and performance enhancement in practical DSSS communication applications.