Method and device of enhancing calibration performance of intelligent antenna of test driven development (TDD) system
A smart antenna and performance technology, applied in the transmission system, wireless communication, transmission monitoring, etc.
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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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