Direct Sequence Spread Spectrum (DS-SS) System Simulation Model Built with Simulink

In this article, I developed a simulation model for a Direct Sequence Spread Spectrum (DS-SS) system using Simulink. The simulation yielded highly satisfactory results, with the model effectively demonstrating key spread spectrum characteristics. Specifically, the system exhibited outstanding spreading performance and maintained stable signal transmission quality across various scenarios. The implementation utilized Simulink's communication blocksets for PN sequence generation, modulation/demodulation components, and channel modeling functions. Through rigorous testing under different channel conditions, the model consistently showed robust performance, successfully validating the expected system behavior. This experiment provided deeper insights into DS-SS system principles and operational mechanisms, particularly regarding code synchronization techniques and spread spectrum gain calculations, which will significantly benefit future research and practical applications in communication system design.