Comparison of different Phase-Inversion Symmetric decoding method in the Phase-Inversion Symmetric - Spread Spectrum Communication system

The structure and working principle of Phase-Inversion Symmetric - Spread Spectrum Communication (PIS-SSC) system were described. Two kinds of implementations of Phase-Inversion Symmetric decoding part in the system were proposed, and analysis and comparison of the two methods were carried out. Meanwhile, the PIS-SSC system structures based on two decoding methods have been modeled and simulated, and bit error rates were compared under the same signal power and code element rate. Simulation results verify the bit error rate of PIS-SSC system based on unipolar pulse decoding method is lower than PIS-SSC system based on bipolar pulse decoding method,Meanwhile, verify the bit error rate of Phase-Inversion Symmetric-Spread Spectrum Communication system is lower than traditional Spread Spectrum Communication (SSC) system under superposition channel of Gauss noise and artificial interference.