建立了简化的星际光通信链路模型,将背景光噪声和光放大器自发辐射噪声引入星际光通信链路中,提出利用前向纠错编码技术来改善星际光通信误码性能的方法。介绍了喷泉码的编译码特点,将喷泉码引入链路模型中。通过仿真研究表明,喷泉码相比于RS码对链路的抗误码性能有很大提高,且随着信噪比的增大改善更加明显。 A simplified model of interstellar optical communication link was established, and the background light noise and spontaneous emission noise of optical amplifier were introduced into the inter-satellite optical communication link. A forward error correction coding technique was proposed to improve the error performance of the interstellar optical communication. Introduced the code features of fountain code, the fountain code into the link model. The simulation results show that the fountain code has a great improvement on the anti-error performance of the link compared with the RS code, and the improvement is more obvious with the increase of the signal-to-noise ratio.