摘要
大气湍流引起的光强闪烁会严重影响大气激光通信系统的性能,使误码率增加。研究表明误码率随对数振幅方差(湍流强度)的增加而上升,为了减小误码率,可以采用多点发射以减小大气湍流对系统的影响,从而提高系统的可靠性。
Abstract laser communication in the future. It is the best scheme that solves the problem of the bottleneck of ＂last-mile＂ in the broadband access. But because of the influence of atmosphere, the scintillation caused by the atmosphere turbulence influences performance characteristics （bit error ratio） of the communication of system seriously. The study shows that BER will rise as the variance of log-amplitude （the strength of turbulence） increasing. To reduce BER, we can use the multi-dot launching to reduce the atmospheric turbulence influence on the system, thus improve the system reliability.
出处
《光学与光电技术》
2005年第4期13-15,共3页
Optics & Optoelectronic Technology
关键词
大气激光通信
光强闪烁
误码率
多发射机
atmospheric laser communication
scintillation
bit error ratio
multiple transmitters
