摘要
无线通信环境下,信号在空间传播会受到各种因素影响而导致接收端信号功率产生较大幅度的变化。为了保证接收端信号在进入解调环路之前具有相对稳定的信号强度,有必要对输入信号进行自动增益控制。文章首先简要说明了传统自动增益控制的设计原理,重点描述了前向数字自动增益控制的设计方法,结合实际工作给出了设计实例,并对设计结果进行了仿真验证,可以在实际工程中推广应用。
In the wireless communication, the amplitude of signal is affected by many factors. So the amplitude of signal at the receiver swings in a large range. To resolve the problem, it is necessary to apply AGC technology in the receiver. This paper makes a brief introduction to the analogy AGC technology first, with the focus on the ＂forward digital AGC＂ technology. An exam- ple which is realized in some project is introduced in terms of the application of this technology. Finally the simulation of the ＂forward digital AGC＂ technology is introduced.
出处
《航天器工程》
2009年第2期106-111,共6页
Spacecraft Engineering
基金
国家重大科技专项工程
