FPGA Implementation of High-speed LDPC Codec for Wireless Laser Communication

With the improvement of the theory and the rapid development of the technology of laser communication, wireless laser communication has wider application fields. At the same time, people's requirements of information transmission rate in the communication system are constantly improving. Thus, Low Density Parity Check (LDPC) codes have become the first selection of channel coding with its excellent performance of error correction and low implementation complexity, but how to realize the efficient encoding and decoding of LDPC codes is the difficulty of the research. The encoding and decoding technology of LDPC codes as well as the wireless laser communication technology are the important issues. This paper will combine with these and mainly studies the actual application of LDPC codes in wireless laser communication. Then the codec of LDPC codes based on the CCSDS standard on the condition of high-speed communication is implemented with FPGA and the throughput can reach 2.5Gbps.