基于Turbo码的TFSK技术性能研究

The study on performance of TFSK based on Turbo

在蓝绿激光对潜通信中,应用时频调制(TFSK)技术使系统具有良好地抗频率选择性衰落的特性,将具有极强的纠错能力的Turbo码引入会进一步提高系统的性能。以蓝绿激光对潜通信系统为平台,基于Turbo码对TFSK技术作了深入研究,提出了基于边带相关算法的解调方案,使无线光通信系统的性能得到了提高,经Mat l ab仿真验证,系统具有更低的误码率。

In the blue-green laser submarine communication,the time-frequency shift keying（TFSK） is used to make the system good characteristics of resistance to frequency selective fading,and application of turbo code which has strong error correction ability will further improve the system performance.This paper takes the blue-green laser submarine communication system as a platform,the TFSK technology based on Turbo codes was studied deeply.The side-correlation algorithm was used in demodulation of TFSK,so the wireless optical communication system performance is improved and it got a lower error rate through Matlab simulation.