基于嵌入式技术的光通信信号智能处理系统  

Intelligent processing system for optical communication signals based on embedded technology

作　　者：张萌 谷栎娜 薛少童 张通 ZHANG Meng;GU Li’na;XUE Shaotong;ZHANG Tong(Huaxin College of Hebei GEO University,Shijiazhuang 050700,China;Artificial intelligence and big date college,Hebei University of Engineering Science,Shijiazhuang 050091,China)

机构地区：[1]河北地质大学华信学院,石家庄050700 [2]河北工程技术学院人工智能与大数据学院,石家庄050091

出　　处：《激光杂志》2025年第2期168-173,共6页Laser Journal

基　　金：河北省人力资源与社会保障研究课题(No.JRS-2021-5028);河北省人力资源与社会保障研究课题(No.JRS-2022-3173)。

摘　　要：为实现信号快速传输,提高光通信系统稳定性,设计基于嵌入式技术的光通信信号智能处理系统。构建光通信信号智能处理系统框架,将采DSP处理模块嵌入到光通信系统中,以LED阵列作为光源,获得光通信原始信号,在DSP中完成RS编码、截断的PPM调制,将其作用到LED上实现光通信信号的发送,经过信道传输后,通过凸透镜聚集传送光束并由探测器阵列接收光信号,采用Berlekamp-Massey算法完成信号解译,利用由高带宽增益积运算放大器、全差分运算放电器、限幅放大器构成两极信号处理电路完成原始输入信号的复原。实验结果表明:该系统可保证5 km通信距离下光通信信号的稳定传输,随着通信距离的增长,误码率呈小幅度变大,2.5 km通信距离内,误码率为0,可实现输入信号的准确恢复,收发端信噪比不低于74 dB,信号处理性能突出。in order to achieve rapid signal transmission and improve the stability of optical communication systems,an intelligent processing system for optical communication signals based on embedded technology is designed.Build an intelligent processing system framework for optical communication signals,embed DSP processing modules into the op-tical communication system,use LED arrays as light sources to obtain the original optical communication signals,com-plete RS encoding and truncated PPM modulation in DSP,and apply them to LED to achieve the transmission of opti-cal communication signals.After channel transmission,the beam is concentrated and transmitted through convex len-ses,and the detector array receives the optical signal.The signal interpretation is completed using the Berlekamp Mas-sey algorithm,and the original input signal is restored using a bipolar signal processing circuit composed of a high bandwidth gain product operational amplifier,a fully differential operational amplifier,and a limiting amplifier.The experimental results show that the system can ensure stable transmission of optical communication signals at a commu-nication distance of 5 km.As the communication distance increases,the bit error rate increases slightly.Within a communication distance of 2.5 km,the bit error rate is 0,which can achieve accurate recovery of input signals.The signal-to-noise ratio at the transmitting and receiving ends is not less than 74 dB,and the signal processing performance is outstanding.

关 键 词：嵌入式技术 光通信 DSP LED阵列 RS编码 PPM调制 

分 类 号：TN929.1[电子电信—通信与信息系统]