Inner Interleaving in the DVB-T Standard with MATLAB Implementation

This article introduces the key components of the DVB-T standard including inner interleaving, inner coding, convolutional interleaving, and radix-4 FFT 1024 point implementation. All programs are implemented using MATLAB, with special attention given to the efficient computation of FFT twiddle factors using optimized algorithms. The implementation includes detailed processing steps and sample code examples to help readers better understand and apply these digital broadcasting techniques. The MATLAB implementation features: - Inner interleaving algorithm with proper bit rearrangement logic - Inner coding using convolutional coding schemes with specified code rates - Convolutional interleaver with configurable delay parameters - Radix-4 FFT implementation for 1024-point transforms with optimized butterfly operations - Efficient twiddle factor generation using precomputed trigonometric tables The code demonstrates practical approaches for handling DVB-T signal processing chains, including memory-efficient buffer management and real-time processing considerations. Each module includes error checking and validation mechanisms to ensure compliance with the DVB-T standard specifications.