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Method and device for calibrating magnitude-phase characteristics of multichannel communication system

A communication system and calibration device technology, which is applied in diversity/multi-antenna systems, space transmit diversity, etc., can solve the problem of low accuracy of the calibration method of amplitude and phase characteristics in a multi-channel communication system, and achieve less time delay and precise calibration method Effect

Active Publication Date: 2013-05-01
COMBA TELECOM SYST CHINA LTD
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Problems solved by technology

[0008] In order to solve the problem that the accuracy of the calibration method of the amplitude and phase characteristics of the multi-channel communication system in the prior art is not high, the present invention provides a calibration method of the amplitude and phase characteristics of the multi-channel communication system with high accuracy

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  • Method and device for calibrating magnitude-phase characteristics of multichannel communication system
  • Method and device for calibrating magnitude-phase characteristics of multichannel communication system
  • Method and device for calibrating magnitude-phase characteristics of multichannel communication system

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Embodiment approach

[0064] As a preferred implementation manner, the calibration signal extraction module 13 includes a preliminary position calculation submodule 131 , a sub-signal stream interception submodule 133 , a correlation operation submodule 135 and an extraction execution submodule 137 .

[0065] The preliminary position calculation sub-module 131 is used to predict in advance the preliminary position of the calibration signal in the total signal flow after passing through the corresponding data channel according to the respective inherent delays of each of the data channels.

[0066] The sub-signal stream intercepting sub-module 133 is configured to intercept a sub-signal stream containing the calibration signal in the total signal stream according to the preliminary position after receiving the total signal stream.

[0067] The correlation operation sub-module 135 is used to perform a correlation operation on the sub-signal stream and the calibration signal that has not passed through...

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Abstract

The invention provides a method and a device for calibrating magnitude-phase characteristics of a multichannel communication system. The method comprises the following steps of: sending calibrating signals to each data channel of the multichannel communication system for transmission; receiving general signal flows including the calibrating signals passing through the data channels from the each data channel; carrying out related operations on the general signal flows and the calibrating signals not passing through the data channels; extracting a calibrating signal passing through the corresponding data channel from each general signal flow when the results of the related operations reach a maximum value; calculating a value for compensating the magnitude and the phase of the corresponding data channel according to an offset value of the magnitude and the phase of the calibrating signals passing through the corresponding data channel; and compensating the magnitude and the phase of the corresponding data channel according to the compensating value of magnitude and phase. The method and the device for calibrating magnitude-phase characteristics of a multichannel communication system are accurate in calibrating the magnitude and the phase of the data channel.

Description

technical field [0001] The invention relates to a method for calibrating amplitude-phase characteristics of a multi-channel communication system, and also relates to a device for calibrating amplitude-phase characteristics of a multi-channel communication system. Background technique [0002] The smart antenna technology is the core technology in the third generation mobile communication technology, and the smart antenna requires good amplitude-phase consistency between each channel of the radio frequency. In order to achieve the same amplitude and phase between channels, it is necessary to calibrate the amplitude and phase of each channel. There are two main methods for calibrating the amplitude and phase characteristics of the current multi-channel communication system: [0003] The first method is to use the analog device to detect and adjust the amplitude and phase of the channel. This method is simple and direct, but the accuracy is low, and the performance of the anal...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/06
Inventor 刁穗东张凯李馨
Owner COMBA TELECOM SYST CHINA LTD
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