摘要
根据数字基带传输系统的基本原理,设计了一套基于微处理的简易数字信号传输性能分析仪,系统主要由数字信号发送模块、信号传输模块和数字信号接收分析模块三部分构成,其中信号发送模块由数字信号发生器和信道模拟低通滤波器等组成。整个系统采用微处理器STM32F103实现码元速率的控制、信道切换、噪声电平调节、扩频与解扩以及同步信号的提取。系统经测试,解码的曼彻斯特编码数据与发送端完全一致,同步信号稳定和可靠。
According to the basic principle of digital base-band transmission system, simple digital signal transmission performance analyzer based on microprocessor is designed. The system mainly consists of digital signal transmitting module, signal transmission module, and digital signal receiving and analyzing module, of which the signal transmission module is composed of a digital signal generator and channel analog low-pass filter. The whole system uses a microprocessor, STM32F103 to realize the control of code rate, channel switching, noise level adjustment, spreading, dispreading, and synchronous signal extraction. It is proved after testing that the decoded Manchester encoded data is consistent with those of sending end, and the synchronization signal is stable and reliable.
出处
《电子技术（上海）》
2013年第1期66-68,共3页
Electronic Technology
基金
2011年湖南理工学院挑战杯重点资助项目(项目编号:2012004)
2012年湖南理工学院大学生思想政治教育特色建设项目
关键词
传输性能分析仪
微处理器
曼彻斯特编码
眼图
transmission performance analyzer
microprocessor
Manchester encoding
eye diagram
