摘要
随着大气激光通信系统(FSO)向更远传输距离和更大传输容量方向发展,为保证通信系统的稳定性和通信质量,除了在光域上提高光信噪比(OSNR),还可以在电域上进行编码纠错。前向纠错技术(FEC)能改善系统信噪比劣化冗余度,在接收端OSNR较低的情况下依然获得较佳的误码性能指标,有效增强系统性能,对工程技术有一定的实用价值。
In order to ensure the stability and quality of high speed long haul Free Space Optical communication systems（FSO）, we can encoded error correction in electrical domain besides increase optical signal to noise ratio（OSNR） in optical domain. Forward error correction （FEC） can improve the redundancy of the ONNR degrade, lower OSNR at the receiving end is still the case for better error performance index, effective way to improve system performance, has some practical value to the engineering field.
出处
《信息通信》
2010年第4期36-37,47,共3页
Information & Communications
