航空通信系统中的LDPC编译码研究

Research on LDPC Encoding and Decoding in Aviation Communication Systems

低密度奇偶校验码(LDPC)是目前最优秀的码字之一,其接近香农传输极限的性能使其成为第五代通信系统(5G)唯一的数据信道编码。介绍了LDPC码的编译码原理和迭代译码结构,并对码长为4096,码率为1/2的LDPC码进行MATLAB仿真和FPGA工程实现。仿真结果和工程实现结果均表明:所选取的LDPC码实现简单,性能优异,对航空通信系统中信道编码的选取具有重要的指导意义。

LDPC is one of the most excellent codes, and it is the only channel coding of the fifth generation communication system(5G), as its performance is close to Shannon transmission limit. The structure of the basic encoding and decoding of LDPC code and structure of iterative decoding are introduced, and matlab simulation and FPGA engineering implementation of code length 4096 and bit rate 1/2 are presented. Simulation results and engineering implementation results show that the LDPC codes selected are easy to realize and have excellent performance and important guiding signification for the selection of channel coding in aeronautical communication system.