A Design and Implementation of LDPC Encoder Based on Mobile-Multimedia-Broadcasting System

This paper gives a channel coding solution which meets the national standards of mobile multimedia broadcasting, the result of simulation shows that QC-LDPC has a good performance while the signals with a extremely low SNR transmitted in AWGN channel. According to the standards, it analyzes the method of implementing the QC-LDPC with FPGA. For the specialty of the quasi-cycle coding matrix, it adopt a combination of pipelining and parallel architecture, with which it could optimize the coder in structure, memory space and sequential logic, also raises the coding efficiency. It implements the LDPC real-time coder based on the T-MMB. The coder meets the requirements both in real-time performance and resource utilization, thus it has a good practical value.