Power control module and method, transceiving apparatus comprising power control module

A technology of power control module and power control unit, which is applied in the direction of transmission control/equalization, radio relay system, etc., and can solve problems such as unstable operation of repeaters, easy self-excitation, and sensitivity to instantaneous power changes

Inactive Publication Date: 2009-02-04
新奇点智能科技集团有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] figure 1 In the shown repeater, because no corresponding measures are taken to control the power of the abo

Method used

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  • Power control module and method, transceiving apparatus comprising power control module
  • Power control module and method, transceiving apparatus comprising power control module
  • Power control module and method, transceiving apparatus comprising power control module

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Embodiment Construction

[0050] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0051] The main idea of ​​the present invention is: the power control module that comprises power control unit, variable gain amplifier (VGA), digital domain automatic gain controller (AGC) and transmission link AGC is set, at first, by power control unit respectively to VGA , the digital domain AGC and the transmission link AGC send their corresponding preset initial gains, so that the VGA, the digital domain AGC and the transmission link AGC work under their corresponding initial gains respectively; The link AGC sends an operation to increase the gain in preset steps, so that the gain of the transmitting link AGC increases gradually, and at the same time, the power control unit continuously adjusts the gain of the VGA by calculating the average power o...

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Abstract

The invention discloses a power control module, comprising: a power control unit, a VGA, a digital domain AGC and a transmitting chain AGC, the power control unit firstly transmits the corresponding preset initial gain to the VGA, the digital domain AGC and the transmitting chain AGC respectively; before the power control module is stabilized, the power control unit executes the following operations cyclically: transmitting an instruction for augmenting the gain by preset stepping to the transmitting chain AGC, and sending a gain adjustment instruction for normalizing the power of output signals to 1 to the VGA; and when the power control module is stable, the power control unit transmits a gain adjustment instruction for normalizing the power of output signals to 1 to the VGA according to the preset cycle. The invention also discloses a transmitter-receiver comprising the power control module as well as a power control method. The invention can maintain the stability of the transmitter-receiver while eliminating echo signals.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a power control module, a power control method, and a transceiver device including the power control module. Background technique [0002] In a wireless communication system, the phenomenon that a signal sent by a transmitting antenna of a transceiver device is received by a receiving antenna of the same transceiver device is called echo interference. The echo interference problem generally exists in various communication devices, especially in the repeater, and the echo interference problem is particularly prominent. Therefore, the following uses the repeater as an example to illustrate. [0003] The China Mobile Multimedia Broadcasting (CMMB, China Mobile Multimedia Broadcasting) system adopts a single-frequency networking mode for networking. At present, repeaters are widely used in the CMMB system. The main function of the repeater is to amplify the re...

Claims

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Application Information

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IPC IPC(8): H04B7/005H04B7/14
Inventor 张辉王西强陈乃奎张卫东
Owner 新奇点智能科技集团有限公司
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