BPSK Baseband Transmission Demonstration

This demonstration implements BPSK baseband transmission using SIMULINK. The complete system spans from transmitter to receiver with integrated signal monitoring. At the transmitter side, we employ BPSK modulation to convert raw binary data into baseband signals, incorporating key modulation parameters such as carrier frequency and symbol mapping. The implementation typically uses a Binary Phase Shift Keying modulator block that maps logical 0 to 0° phase and logical 1 to 180° phase shift. The modulated signal then passes through a simulated channel model that may include additive white Gaussian noise (AWGN) and other impairments. At the receiver end, a coherent BPSK demodulator performs phase detection using a phase-locked loop (PLL) for carrier recovery, followed by decision circuitry that thresholds the demodulated output to reconstruct the original bit stream. The system includes signal visualization blocks (such as Scope and Spectrum Analyzer) to display time-domain waveforms, constellation diagrams, and eye patterns for performance evaluation. This demonstration provides comprehensive insight into BPSK baseband transmission principles, enabling researchers to analyze bit error rate (BER) performance and optimize modulation parameters through practical simulation experiments.