Automatic gain control device and automatic gain control method

A technology of automatic gain control and gain control, applied in the direction of gain control, amplification control, power management, etc., can solve the problems of long adjustment time and difficult application of automatic gain control speed, etc., achieve short adjustment time, enhance discrimination ability, reduce The effect of the probability of false start

Inactive Publication Date: 2012-07-18
INST OF MICROELECTRONICS CHINESE ACAD OF SCI
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Problems solved by technology

[0010] In the process of realizing the present invention, the inventor realized that the prior art has the following technical problems: in the automatic gain control, the method of successive approximation is used to determine the gain value of the system to the input signal, resulting in relatively long adjustment time, which is difficult to apply to the automatic gain control Environments with high automatic gain control speed requirements

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  • Automatic gain control device and automatic gain control method
  • Automatic gain control device and automatic gain control method
  • Automatic gain control device and automatic gain control method

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Embodiment Construction

[0027] In an exemplary embodiment of the present invention, an automatic gain control device is disclosed. The automatic gain control device includes an analog front-end module, an analog-to-digital conversion module, an average energy estimation module and an automatic gain control module. The analog front-end module is used to receive the analog signal sent by the channel transmitter; and perform coarse gain adjustment and fine gain adjustment on the signal strength of the analog signal according to the instruction of the automatic gain control module. The analog-to-digital conversion module is connected with the analog front-end module and is used to convert the analog signal into a digital signal. The average energy estimation module is connected with the analog-to-digital conversion module, and is used for estimating the average signal strength of the analog-to-digital converted digital signal within the preset gain adjustment period. The automatic gain control module is...

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Abstract

The invention discloses an automatic gain control device and an automatic gain control method. In the device, the energy classification is conducted on received signals, different gain control process flows are adopted for different energy levels, so that the strengths of the input signals are controlled in a certain range, thereby being adapting to the signals in various strength levels, so that a signal receiving system can achieve the best receiving effect.

Description

technical field [0001] The invention relates to the technical field of local area networks in the communication industry, in particular to an automatic gain control device and method. Background technique [0002] Wireless local area network technology is one of the most promising technologies in the field of wireless communication in the new century. At present, wireless local area network technology has matured day by day, and its application is becoming more and more extensive. Wireless LAN is a high-speed and flexible data communication system, which sends and receives data wirelessly, and the highest data transmission rate it can achieve is 54M / bps. As the indoor coverage of the third-generation mobile communication system becomes more and more prominent, using wireless local area networks to improve the indoor coverage of the third-generation mobile communication system has become the first consideration of various telecom operators. [0003] In a wireless local area...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03G3/20H04W52/52
Inventor 张心冲吴斌蔡菁菁张振东
Owner INST OF MICROELECTRONICS CHINESE ACAD OF SCI
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