Power controlling device and method for mobile communication system

A mobile communication system, power control technology, applied in the direction of transmission control/equalization, etc., can solve the problems of low power control accuracy, difficulty in accurately achieving control step size and accuracy of digital control attenuators, and achieve easy implementation and simplified circuits , cost reduction effect

Inactive Publication Date: 2008-07-30
北京瑞祺皓迪技术股份有限公司
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Problems solved by technology

[0006] The purpose of the present invention is to propose a device and method for power control of a mobile communication system, in order to overcome the problems existing in the prio

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  • Power controlling device and method for mobile communication system
  • Power controlling device and method for mobile communication system

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Embodiment Construction

[0043] The method of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0044] The basic technical idea of ​​the present invention is to realize the multiplication of the modulated quadrature up-conversion signal and the signal amplitude adjustment ratio inside the FPGA to replace the digital control attenuator to complete the signal attenuation. Specifically, the power attenuation value and signal The mapping table of the amplitude adjustment ratio, the power attenuation value is used as the address of the mapping table, the corresponding signal amplitude adjustment ratio is selected, and the result obtained by multiplying it with the power control signal containing the modulation information is sent through the DAC converter and the radio frequency processing circuit. To the power amplifier for amplified output, where instead of a 1-stage or 2-stage digitally controlled attenuator is determined by ...

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Abstract

The invention discloses a power control device and a method for a mobile communication system, the method comprises that, power envelope type parameters and power attenuation parameters are determined by a power control unit; a power control signal containing modulation information is obtained by multiplying a power-time envelop curve which is obtained according to the power envelope type by a modulated quadrature upconversion signal; an attenuated modulated signal is obtained according to the power control signal and the power attenuation parameters; the modulated signal is sent to a power amplifier for amplification and output after being carried out the digital to analog conversion, the radio frequency mixing and the filter processing. The usage of the invention can not only improve the power control precision, but also can simplify the circuit, lower the cost and facilitate the realization.

Description

technical field [0001] The invention relates to the quantitative attenuation technology of high and intermediate frequency signals in a mobile communication system, in particular to a device and method for power control of a global mobile communication system. Background technique [0002] Attenuator is a commonly used electronic measurement equipment, it is usually inserted between the signal source and the load, used to adjust the size of the signal, to prevent overloading of the load circuit, as a new type of attenuator, the digital control attenuator has a wide range of applications in the electronic field application. Many electronic devices (for example, communication equipment, radar or wireless local area network equipment, etc.) need quantitative attenuation of high and intermediate frequency signals. The level will directly affect the performance indicators of these electronic devices and their performance. [0003] GSM (Global System for Mobile Communications), ...

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Application Information

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IPC IPC(8): H04B7/005
Inventor 马丽珍
Owner 北京瑞祺皓迪技术股份有限公司
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