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Method for real-time calibrating intelligent antenna

A smart antenna and antenna technology, applied in the direction of antenna, diversity/multi-antenna system, radio/induction link selection arrangement, etc. problem, to achieve the effect of real-time calibration

Active Publication Date: 2007-10-31
DATANG MOBILE COMM EQUIP CO LTD
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0006] It can be seen from the technical solutions disclosed above that the first prior art solution needs to calibrate the hardware path and calibrate the antenna (or a dedicated coupling circuit), which has high hardware costs and is prone to failure
However, another prior art solution needs to transmit sequentially to each antenna without using the calibration path, and at the same time, all antennas except the transmitting antenna will receive. It takes a long time to do a calibration, and the amount of calculation is large. It is easy to apply in real time in the base station, and the scheme only sends one unit of data, and the anti-interference and calculation accuracy are not very good

Method used

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  • Method for real-time calibrating intelligent antenna
  • Method for real-time calibrating intelligent antenna
  • Method for real-time calibrating intelligent antenna

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Embodiment Construction

[0063] The core of the present invention is under the situation of not setting up the calibration path, at first, use the automatic test device to pre-calibrate each antenna unit in the smart antenna array, and obtain the transmission factor matrix between each antenna unit; then, select the basic The training sequence code (midamble) and its period-shifted code are used as the calibration sequence of each antenna unit in the smart antenna array, and a certain calibration time slot is selected to perform two calibrations on the transmission and reception of the working antenna in the smart antenna array. , to calculate the compensation factors of all transmit and receive paths, so as to realize the real-time calibration of the smart antenna. Among them, when calibrating the transmission path, any N-1 antennas transmit the calibration sequence at the same time, and the remaining antenna receives it. According to the calibration data received by the receiving antenna, combined wi...

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Abstract

The invention relates to a method for calibrating the intelligent antenna timely without special-used calibrating route, said method includes: A. calibrates the intelligent antenna to obtain the transmission gene matrix of every antenna; B. the transmission gene matrix is loaded to the wireless base station which uses intelligent antenna via operating maintaining tool; C. determines the calibrating sequence and the time interval; D. after the base station start running, calibrates the sending route and receiving route of working antenna using the calibrating sequence, and calculates the compensating factor of sending and receiving route to realize the real-time calibrating for intelligent antenna. The invention realizes the real-time calibrating for the intelligent antenna using the intercalibration arithmetic of several antennas of antenna array, and makes the intelligent antenna more practicality.

Description

technical field [0001] The invention relates to the smart antenna technology of the wireless communication system, in particular to a method for calibrating the smart antenna in real time. Background technique [0002] In recent years, in the field of wireless communication technology, smart antenna technology has become one of the most attractive technologies in the field of mobile communication. The smart antenna adopts the space division multiple access technology, and uses the difference in the transmission direction of the signal to distinguish the signals of the same frequency or the same slot and the same code channel, so as to maximize the use of limited channel resources. Compared with the non-directional antenna, the antenna gain of the uplink and downlink is greatly improved, the transmission power level is reduced, the signal-to-noise ratio is improved, and the influence of channel transmission fading is effectively overcome. At the same time, since the antenna ...

Claims

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Application Information

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IPC IPC(8): H04Q7/36H01Q3/26H04B7/04H04B17/00H04B17/12
Inventor 郭全成
Owner DATANG MOBILE COMM EQUIP CO LTD
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