Complete Digital Receiver Workflow Simulation Implemented

This documentation presents the complete workflow simulation of a digital receiver. The implementation begins with modulation techniques, proceeds through demodulation and down-conversion processes, and culminates in sampling decision and frequency discrimination modules. This comprehensive simulation is crucial as it encompasses all essential components of a digital receiver system. The simulation validates both the correctness and performance of each module through MATLAB/Simulink implementations featuring quadrature amplitude modulation (QAM) schemes, digital down-conversion algorithms using mixer and filter components, and decision-directed synchronization techniques. Key functions include raised-cosine filtering for pulse shaping, Costas loop implementation for carrier recovery, and adaptive equalization algorithms for signal optimization. The significant advantage of this approach lies in conducting thorough testing and optimization before physical hardware development. Through this simulation methodology, we gain deeper insights into digital receiver operational principles and enable customization and enhancement for diverse application scenarios, including software-defined radio (SDR) implementations and 5G communication systems.