Method for real-time calibrating intelligent antenna

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 ...

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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

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