摘要
将一种新的正交频分复用调制技术运用到大气激光通信系统中,分析了采用这种非对称限幅光正交频分复用调制技术的大气激光通信系统在大气湍流信道下的性能.在此基础上,把非对称限幅光正交频分复用调制方案与传统的开关键控及直流偏置光正交频分复用调制方案进行了比较,并在大气湍流信道中进行了仿真.仿真结果表明:非对称限幅光正交频分复用调制技术增强了系统对大气湍流的抗干扰能力,该方案可以满足大气激光通信系统的需要.
The asymmetrically clipped orthogonal frequency division multiplexing technique was applied to the atmospheric communication system,and the performance of atmospheric communication system was analyzed using asymmetrically clipped orthogonal frequency division multiplexing technique through atmospheric turbulence channels.On this basis,asymmetrically clipped optical orthogonal frequency division multiplexing modulation was compared with on/off keying modulation and DC optical orthogonal frequency division multiplexing modulation,which was simulated in the atmospheric turbulence channel.The simulation results show that the proposed scheme can satisfy the requirements of atmospheric laser communication system.
出处
《光子学报》
EI
CAS
CSCD
北大核心
2011年第1期36-40,共5页
Acta Photonica Sinica
基金
国家自然科学基金(No.60602007)资助
关键词
大气激光通信
非对称限幅光正交频分复用
大气湍流
Atmospheric laser communication
Asymmetrically clipped optical OFDM
Atmospheric turbulence
