| 数字通信系统中新型自动增益控制方法设计 |
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| 引用本文： | 陈家旭,管恩义,李文,王杰,姚宜东.数字通信系统中新型自动增益控制方法设计[J].导航与控制,2016(6):57-61. |
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| 作者姓名： | 陈家旭 管恩义 李文 王杰 姚宜东 |
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| 作者单位： | 北京航天控制仪器研究所,北京,100039 |
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| 摘 要： | 设计了一个新型的自动增益控制(Automatic Gain Control,AGC)方法.针对某数字通信系统的需求,所设计的AGC可以充分利用ADC量化位数,并能够处理LTE多种传输模式(TM2和TM3)信号.仿真结果表明,本AGC能够同时适用于TM2和TM3信号,能够在充分利用ADC量化位数的同时避免过饱和现象,能够准确判断输入信号功率变化状态并迅速调整,从而对稳定功率的输入信号给出恒定的增益.
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| 关 键 词： | 自动增益控制 数字通信系统 传输模式 |
Design of a Novel Automatic Gain Control Method for
Digital Communication System |
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| CHEN Jia-xu,GUAN En-yi,LI Wen,WANG Jie and YAO Yi-dong.Design of a Novel Automatic Gain Control Method for
Digital Communication System[J].Navigation and Control,2016(6):57-61. |
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| Authors: | CHEN Jia-xu GUAN En-yi LI Wen WANG Jie and YAO Yi-dong |
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| Institution: | Beijing Institute of Aerospace Control Devices;Beijing Institute of Aerospace Control Devices;Beijing Institute of Aerospace Control Devices;Beijing Institute of Aerospace Control Devices;Beijing Institute of Aerospace Control Devices |
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| Abstract: | A novel automatic gain control
(
AGC
)
method is designed. Aiming at satisfying the requirement of some certain digital communication system, the digitalizing bits of ADC can be fully utilized with the designed AGC, and it is able to handle with several transmission modes of LTE
(
such as TM2 and TM3
)
signal. It is shown from simulation results that by utilizing the proposed AGC, LTE TM2 and TM3 signal can be well handled, the digitalizing bits of ADC can get fully utilized while avoiding the oversaturation phenomenon, the power status of input signal can be estimated accurately and the gain can be adjusted rapidly, by this means, for input signal with stable power, constant gain can be generated by the proposed AGC |
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| Keywords: | automatic gain control (
AGC
) digital communication system transmission modes |
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