DVB-T 2K Mode Receiver Implementation with Full Signal Processing Chain

In this project, we have developed a custom-built DVB-T 2K mode receiver with complete signal processing capabilities. The receiver implements a sophisticated architecture including: - Demodulation module employing QPSK/16-QAM/64-QAM constellation mapping with Viterbi decoding algorithms - Analog down-conversion module utilizing superheterodyne reception techniques for RF-to-IF conversion - Digital down-conversion module implementing CORDIC-based numerically controlled oscillators (NCOs) and FIR filtering The system features fully integrated MATLAB code with configurable parameters for channel bandwidth (6/7/8 MHz) and guard interval settings. Our development process involved extensive testing and optimization cycles, incorporating: - BER (Bit Error Rate) performance validation under various channel conditions - Multipath fading resistance testing using Rayleigh channel models - Automatic gain control (AGC) algorithms for signal strength stabilization The receiver includes a user-friendly GUI interface built with MATLAB App Designer, providing real-time spectrum visualization and signal quality metrics. The interface allows users to: - Monitor constellation diagrams and synchronization status - Adjust frequency offsets and sampling parameters dynamically - View error rate statistics and channel state information Through rigorous optimization of OFDM symbol timing recovery and pilot-based channel estimation algorithms, we have ensured exceptional stability and reception performance. This receiver serves as a reliable solution for high-quality digital television experiences in home entertainment systems.