摘要
通信系统接收机的信号接收单元一般采用自动增益控制(AGC),文章针对通信系统接收机设计需具备大动态接收范围的发展需求,提出了一种基于FPGA的信道多级AGC控制方法。该方法主要由大信号抑制控制单元、开环AGC控制单元和闭环AGC控制单元串联组成多级控制系统,实现对通信系统接收机信道大动态范围信号强度的有效AGC控制。试验验证表明:该控制方法实现了对接收机接收信号高控制精度和快速反应时间的可靠控制。该控制方法,具有防止大信号失真、输出信号电压稳定、响应速度快、大动态范围和抗干扰性能较好等优点。
The signal receiving unit of communication system receiver generally adopts Automatic Gain Control(AGC).This paper proposes a channel multi-level AGC control method based on FPGA to meet the development requirements of communication system receiver design with large dynamic receiving range.This method mainly consists of a large signal suppression control unit,an open loop AGC control unit and a closed loop AGC control unit in series to form a multi-level control system,which can realize the effective AGC control of signal strength of the communication system receiver channel in a large dynamic range.The experimental results show that this control method can achieve reliable control of high control accuracy and fast response time of the received signal of the receiver.The control method has the advantages of preventing large signal distortion,stable output signal voltage,fast response speed,large dynamic range and good anti-interference performance.
作者
苏锋
李飞
陈佳鑫
SU Feng;LI Fei;CHEN Jiaxin(Guangzhou Haige Communication Group Co.,Ltd.,Guangzhou 510700,China)
出处
《现代信息科技》
2023年第7期62-64,共3页
Modern Information Technology
关键词
通信系统
接收机
大动态范围
自动增益控制
多级串联
communication system
receiver
large dynamic range
automatic gain control
multi-level series connection
