摘要
分析了空间激光通信的两种信道数学模型——自由空间光通信信道和大气激光通信信道,针对信道时变突发的特点,引入信道编码技术和交织技术,交织对发送信号进行扰码以克服大气信道相关性,Reed-Solomon(RS)线性分组码克服信道的突发错误,并进行一定程度的纠错。计算机仿真结果表明,RS编码和交织技术非常适合空间光通信信道,能大大降低系统的误码率。
Two kinds of channel mathematics models in space laser communication,free space optical communication channel and atmosphere laser communication channel,have been studied.For the quality of time-variable and errors burst of the channel,channel coding and interleaving have been introduced,while interleaving can overcome the correlation of atmosphere channel according to disturbing the transmitted codes,and Reed-Solomon（RS） linear block code can solve the bursted errors and correct them in some degrees.The results of simulation show that RS coding and interleaving are fit for the channel of space laser communication, and can largely decrease hit error rate（BER）.
出处
《半导体光电》
EI
CAS
CSCD
北大核心
2007年第1期112-115,共4页
Semiconductor Optoelectronics
