摘要
应用调频技术实现对电光信号的调制转换,再通过接收频率变换的紫外光信号进行光电转换,还原出原始信号.提出了一种用AVR单片机解调来提高紫外通信系统的传输速率的方法,采用AVR单片机设计解调电路,较好地处理2FSK信号的过渡带问题,使传输的信息经调制后能正确解调,传输速率可达到4.8 kbit/s,成功实现了实时语音通信.
Making use of frequency modulation to implement elect w-optic modulation, and receiving ultraviolet hght that frequency is variable, signal can been demodulated, In this paper, transmission rate of ultraviolet communication system has been enhanced by using a kind of demodulation method with AVR microcontroller; this method , which has properly dealt with the transition area problems of 2FSK signals, has properly demodulated the original signals from the modulated signals. The transmission rate achieves 4.8 kbit/s, and thus realizes real time speech communication.
出处
《重庆工学院学报（自然科学版）》
2008年第8期104-107,共4页
Journal of Chongqing Institute of Technology
基金
某军工专项项目(JW20**016)
关键词
紫外通信
非视距通信
误码率
实时语音通信
ultraviolet communication
non line of sight communications
BER
real-time speech communication
