基于FPGA的自由空间光通信系统RS联合交织信道编码方案的设计与实现

With the increasing frequency of marine activities, free space optical communication is widely used. For the space optical communication system, it also has certain limitations and is easily affected by atmospheric turbulence, rain and snow, atmospheric temperature, pressure and other conditions. RS codes have good coding gain and are easy to implement. RS and interleaving codes have strong ability to resist burst errors, so they are widely used. The purpose of this research is to reduce the influence of atmospheric turbulence on communication quality through channel coding in the space optical communication system between space satellites and ocean-going ships, and to improve the reliability of the communication system. In this paper, a channel coding scheme of RS code and interleaving code joint coding is designed, and the coding scheme is designed and implemented based on FPGA. Experiments show that when the bit error rate is 1E-05, the receiver sensitivity is increased by 6.75dB.