基于ATmega8的紫外语音通信系统接收解调技术研究  

Research on the Receiving-demodulation Technology of Ultraviolet Voice Communication System Based on AVR Microcontroller

作　　者：高红杰[1] 肖沙里[1] 向平[1] 

机构地区：[1]重庆大学光电工程学院

出　　处：《微型电脑应用》2008年第10期50-52,6,共3页Microcomputer Applications

摘　　要：紫外通信相对于常规无线通信具有灵活、难以截获、抗干扰性强等诸多特点,并具备一定的非视距通信能力。应用调频技术实现时电光信号调制转换,再通过接收频率变换的紫外光信号,并进行光电转换,解调后正确还原出原始信号。提出了一种基于AVR单片机解调的接收系统设计,很好地处理了2FSK信号的过渡带问题,使传输的信息经调制后能正确解调,传输速率可以达到4.8Kbit/s,成功实现了实时语音通信。Compared with the conventional wireless communication,ultraviolet communication has unique properties such as flexibility,non-intercept, powerful interference immunity and non-line of sight communication.Making use of frequency modulation to implement electro-optic modulation,and receiving ultraviolet light that frequency is variable,signals can be demodulated.In this paper,a desgm of receiving system based on AVR microcontroller is proposed.This design,which has properly dealt with the transition area problems of 2FSK signals,has properly demodulated the original data from the modulated signals.The transmission rate achieves 4.8 kbit/s.Thus,real time speech communication is realized.

关 键 词：紫外通信 误码率 解调 

分 类 号：TN915.05[电子电信—通信与信息系统]