Performance Simulation of 4DPSK and 8DPSK in Gaussian Channels

This paper presents a comprehensive performance simulation of 4DPSK and 8DPSK modulation schemes under Gaussian channel conditions. The implemented demodulation approaches include standard coherent demodulation along with custom-developed non-coherent demodulation algorithms. The non-coherent demodulation implementation, particularly valuable for applications requiring rapid detection capabilities, employs phase difference detection algorithms that eliminate the need for carrier recovery circuits. Our simulation framework incorporates MATLAB-based implementations featuring key functions such as signal generation with differential encoding, AWGN channel modeling, and demodulator blocks with decision logic. We conducted extensive experiments to validate simulation accuracy, analyzing performance metrics across various signal-to-noise ratio (SNR) conditions. The study provides detailed comparisons between demodulation methods, including bit error rate (BER) calculations and performance degradation analysis. Through systematic investigation, we gained deep insights into the performance characteristics of 4DPSK and 8DPSK in Gaussian channels, offering valuable references for research and practical applications in digital communication systems. The code implementation includes configurable parameters for modulation order, SNR ranges, and demodulation method selection, enabling reproducible results and further experimentation.