LDPC Decoder Simulation Experiment Using Simulink

In this LDPC decoder simulation experiment, we utilized Simulink for system modeling and performance analysis. The simulation block diagram is presented below:

[Insert simulation diagram here]

Initially, we meticulously designed and optimized the LDPC decoder structure to ensure reliable decoding performance under various channel conditions. The implementation involved configuring key parameters including code rate, parity-check matrix structure, and iterative decoding algorithms (such as belief propagation or min-sum algorithms). We then conducted comprehensive simulation experiments using Simulink to validate the decoder's performance metrics and robustness. During the simulation process, we tested multiple input datasets with varying signal-to-noise ratios (SNRs) and performed systematic parameter adjustments to simulate diverse operational scenarios. This included tuning iteration limits, message quantization levels, and convergence thresholds. Through this rigorous testing methodology, we successfully verified the LDPC decoder's error correction capabilities and implemented design enhancements to further improve its decoding efficiency and robustness against channel impairments.