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Array channel correcting method and device for time-division and duplex intelligent antenna

An antenna system, duplex intelligence technology, applied in diversity/multi-antenna systems, antenna arrays, antennas, etc., can solve the problems of difficult system implementation, low calibration algorithm accuracy, and increased system complexity, achieving simple algorithm and calibration. high precision effect

Active Publication Date: 2006-03-15
ZTE CORP
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Problems solved by technology

Difficult to realize in real system
[0007] 3) Using the auxiliary transceiver channel and the array channel to form the uplink and downlink calibration link, the implementation of the calibration algorithm and the signal transmission path are complicated, which increases the complexity of the system, and the accuracy of the calibration algorithm is not high

Method used

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  • Array channel correcting method and device for time-division and duplex intelligent antenna
  • Array channel correcting method and device for time-division and duplex intelligent antenna
  • Array channel correcting method and device for time-division and duplex intelligent antenna

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Embodiment Construction

[0039] figure 1It is a structural schematic diagram of a TD-SCDMA system smart antenna base station device with real-time correction function according to an embodiment of the present invention. As shown in the figure, the device mainly includes an antenna array 10 , an outdoor radio frequency front end 11 , an N-channel coherent transceiver 14 , a baseband processing unit 15 and a base station main control unit 16 sequentially connected in a bidirectional circuit. The N-channel coherent transceiver 14 is connected to the outdoor RF front-end 11 through the feeder cable 12, and connected to the entrance of the coupling network in the antenna array 10 through the correction cable 13. The present embodiment takes the equidistant linear array as an example, and the uniform circular array is Connect to the calibration beacon antenna inlet. The N channel coherent transceiver 14 is made up of N branches of transceiver channels, including a first transceiver channel 141 with a switc...

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Abstract

A method and equipment for correcting the amplitude and phase difference of array channels in a time-shared duplex intelligent antenna system is disclosed. Said method includes such steps as setting up a switch array in the front of transceiver of the first channel for switching between transmission and receiving and between up and down correcting links, performing up correction through outputting a known sequence to the transmitter of the first channel, connecting up correcting link, detecting the responses of all receiving channels and sampling while storing, or performing down correction through sequentially transmitting a known sequence to transmitters of N down channels, connecting down correcting link, detecting the known characteristic signal of the response from currently corrected channel, and sampling while storing, and calculating the correcting right of all up and down channels for weighting the wave beams.

Description

technical field [0001] The invention relates to a method and a device for correcting an array channel of a smart antenna system in a time division duplex (TDD) working mode in the field of mobile communications, in particular to a method and a device for correcting amplitude and phase errors of an array channel of a smart antenna base station. Background technique [0002] In the smart antenna system, the direction and shape of the antenna beam are controlled by weighting the amplitude and phase of the signals received and transmitted by the array channel to achieve directional transmission and reception for desired users. In this way, the spatial filtering and the reduction of co-channel interference power can be achieved to achieve the purpose of improving communication quality, increasing communication distance, and expanding system communication capacity. [0003] The transmission characteristics between the uplink channel and the downlink channel of the array in the act...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q7/30H04Q7/36H01Q21/00H04B7/06H04B7/08
Inventor 李景毅谢玉堂王长明
Owner ZTE CORP
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