激光无线音频传输系统设计  

Design of Wireless Laser Audio Transmission System

作　　者：兰建军[1] 李宇 

机构地区：[1]东北电力大学自动化工程学院,吉林长春132012 [2]吉林供电公司,吉林长春132000

出　　处：《压电与声光》2014年第6期987-990,共4页Piezoelectrics & Acoustooptics

基　　金：国家自然科学基金资助项目(61304013)

摘　　要：为了简化短距离激光无线通信的系统结构和音频信号处理的编解码问题,分析了三角积分调制器(Σ-Δ)和开关键控(OOK)调制原理,给出了太阳能电池频率响应曲线和激光无线传输系统的硬件设计。在系统中进行了音频信号的无线传输测试,给出了测试数据,实验数据表明,具有400kHz的带宽范围,通信距离至少200m。In order to simplify the structure of short distance wireless laser communication system and audio signal processing of the encoding/decoding problem, the principle of the X-A modulation technology and on-off-keying （OOK） modulation is analyzed, and the frequency response curves and the hardware design of optical transmitter and receiver are presented. We investigate the system＇s performance through the audio signal wireless transmission, and the test data is given. The experimental results show that the data bandwidth of 400 kHz can be achieved, and communication distance can reach above 200 meters at least.

关 键 词：无线激光通信 Σ-Δ调制 开关键控 太阳能电池 频率响应 

分 类 号：TN929[电子电信—通信与信息系统]