LDPC Encoder and Decoder for DVB-S2 System Modeling in MATLAB

This MATLAB project implements LDPC encoder and decoder components for Digital Video Broadcasting - Second Generation (DVB-S2) system modeling. The system model includes both LDPC encoding and decoding modules designed to enable communication functionality for DVB-S2 standards. LDPC (Low-Density Parity-Check) codes are advanced error-correcting coding techniques used to detect and correct transmission errors in communication systems. The implementation utilizes MATLAB's communications and signal processing toolboxes to create efficient encoding and decoding algorithms. Key components include: - LDPC encoder implementation using parity-check matrix generation according to DVB-S2 specifications - Decoder algorithm employing iterative belief propagation (message passing) for error correction - Bit error rate (BER) performance evaluation through Monte Carlo simulations - Signal-to-noise ratio (SNR) analysis and coding gain measurements The model allows for comprehensive performance evaluation including BER vs SNR characteristics, decoding iteration analysis, and comparison with theoretical limits. The code structure supports parameter configuration for different code rates and block lengths specified in DVB-S2 standards, making it suitable for both educational and research applications in digital communication systems.