A method and device for enhancing the calibration performance of a TDD system smart antenna

A smart antenna and performance technology, applied in wireless communication, power management, electrical components, etc.

Active Publication Date: 2015-10-21
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a method and device for enhancing the calibration performance of a smart antenna in a TDD system, so as to ensure the calibration performance of the receiving channel of the smart antenna in the case of interference in the external complex wireless environment

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  • A method and device for enhancing the calibration performance of a TDD system smart antenna
  • A method and device for enhancing the calibration performance of a TDD system smart antenna
  • A method and device for enhancing the calibration performance of a TDD system smart antenna

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no. 1 example

[0053] The first embodiment of the present invention is a method for enhancing the calibration performance of a TDD system smart antenna, because the method of the present invention is to calibrate the physical link structure in the receiving channel of the existing TDD wireless communication system smart antenna (that is, remote radio equipment) Based on the implementation, the receive channel calibrates the physical link structure as image 3 As shown, the calibration transmit channel is connected to the receive channel through the antenna and coupling network, and the control board provides the output of the calibration transmit channel and accepts the input of the receive channel, such as Figure 4 As shown, the method includes the following specific steps:

[0054] Step S101, the control board determines the transmit power of the basic training sequence under the same carrier. The basic training sequence includes a sequence with high autocorrelation, or includes a sequen...

no. 3 example

[0079] The third embodiment of the present invention is a device for enhancing the calibration performance of a smart antenna in a TDD system. The device in this embodiment corresponds to the method in the first embodiment. The calibration transmit channel is connected to the receive channel through the antenna and coupling network, and the control board provides the output of the calibration transmit channel and accepts the input of the receive channel, such as Figure 7 As shown, the device specifically includes the following components:

[0080] 1) The basic training sequence sending module 10, located in the control board, is used to determine the transmission power of the basic training sequence under the same carrier, the position set in the guard time slot of the conversion point according to the basic training sequence and the set position in the calibration transmission channel according to the basic training sequence. Transmit the basic training sequence at the above...

no. 4 example

[0092] The fourth embodiment of the present invention is a device for enhancing the calibration performance of a smart antenna in a TDD system. The embodiment is roughly the same as the first embodiment. The difference is that the functions performed by the transmission power determination sub-module 13 are different. The determination submodule 13 is used for:

[0093] Among the basic training sequence power that needs to be input by the antenna port during the receiving channel calibration and the maximum input power threshold value allowed by the antenna port during the receiving channel calibration, the smaller one is selected as the final basic training sequence power input by the antenna port during the receiving channel calibration; The transmit power of the basic training sequence is deduced from the power of the basic training sequence finally input by the antenna port when the receiving channel is calibrated.

[0094] Apparently, this embodiment is an apparatus corre...

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Abstract

The invention discloses a method and a device of enhancing calibration performance of an intelligent antenna of a test driven development (TDD) system. Basic training sequence power sent by a launch channel of a self-adaptive adjustment intelligent antenna system enables power of basic training sequence signals to be proper when the basic training sequence signals arrive at an antenna mouth outside an outdoor antenna in order to improve signal to interference ratio between the training sequence and external disturbance, so that the purpose of reducing the influence of calibration training signals on other stations is achieved, meanwhile, the launch position of basic training sequence in a guard gap, and combining a plurality of continuous basic training sequences of a receiving channel to conduct an amplitude phase estimation, and therefore the influence of the external disturbance on calibration of the receiving channel of the intelligent antenna, and accuracy and precision of the amplitude phase estimation is improved.

Description

technical field [0001] The invention relates to the technical field of TDD (Time Division Duplex, Time Division Duplex mode) wireless communication, in particular to a method and a device for enhancing the calibration performance of a smart antenna in a TDD system. Background technique [0002] Smart antennas are TD-SCDMA (Time Division-Synchronous Code Division Multiple Access, Time Division Synchronous Code Division Multiple Access) and TDD-LTE (Time Division Duplex-Long Term Evolution, time division duplex mode - long-term evolution) two wireless communication systems (hereinafter collectively referred to as the TDD system) is one of the core technologies. [0003] When using a smart antenna, it is necessary to have the technology to calibrate the smart antenna in real time. The use of smart antennas in the TDD system is based on the reciprocity principle in the electromagnetic field theory, and directly uses the uplink beamforming parameters to perform downlink beamform...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W52/04H04B17/11H04B17/21H04B17/12
Inventor 赵大为
Owner ZTE CORP
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