混沌激光通信网络波分复用传输系统设计  

Design of WDM communication system for chaotic laser communication network

作　　者：陈垚至[1] CHEN Yaozhi(Sichuan Vocational and Technical College,Suining Sichuan 62900,China)

机构地区：[1]四川职业技术学院

出　　处：《激光杂志》2018年第10期96-101,共6页Laser Journal

摘　　要：混沌激光通信网络容易受到码间干扰导致通信误码,为了提高混沌激光通信网络的信号传输质量,提出一种基于时间反转镜技术的混沌激光通信网络波分复用传输系统设计方法,构造混沌激光通信网络信道传输模型,采用时间反转技术构造混沌激光通信网络的波分复用传输模型,接收端接收到经过混沌激光信道传播的LFM信号之后,对接收信号作拷贝相关,结合时延扩展与码间干扰抑制方法进行通信信道均衡和波分复用设计。在嵌入式Visual DSP＋＋4.5平台下进行混沌激光通信网络波分复用传输系统设计,硬件设计主要有AD电路、中断电路、时钟电路和调制解调电路。系统测试结果表明,采用该系统进行混沌激光通信,通信误码率较低,失真较小,提高了混沌激光通信质量。Chaos laser communication network is easy to be affected by inter-symbol interference,and in order to improve the signal transmission quality of chaotic laser communication network,a design of chaotic laser communication network WDM transmission system based on time-reversing mirror technology is proposed. The channel communication model of laser communication network uses time reversal technology to construct the WDM transmission model of chaotic laser communication network. After receiving the LFM signal propagating through the chaotic laser channel,the receiving end makes a copy correlation with the received signal which combined with delay spread. The communication channel equalization and wavelength division multiplexing design is performed with the inter-symbol interference suppression method. Under the embedded Visual DSP ＋ ＋ 4. 5 platform,the chaotic laser communication network WDM transmission system design is carried out. The hardware design mainly includes AD circuit,interrupt circuit,clock circuit,modulation and demodulation circuit. The system test results show that the chaotic laser communication is adopted by the system,the communication error rate is low,the distortion is small,and the quality of chaotic laser communication is improved.

关 键 词：混沌激光通信 网络 波分复用 传输系统 误码 信道均衡 

分 类 号：TN911[电子电信—通信与信息系统]