Antenna calibration system and method

A calibration system and calibration method technology, applied to antennas, electrical components, etc., can solve problems such as spectral distortion, and achieve the effect of eliminating nonlinearity, saving hardware resources, and accurate antenna calibration

Active Publication Date: 2011-04-27
DATANG MOBILE COMM EQUIP CO LTD
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Problems solved by technology

image 3 It shows the spectrum diagram before and after pre-distortion. From the spectrum

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  • Antenna calibration system and method
  • Antenna calibration system and method

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Embodiment Construction

[0093] Considering the relevant problems in the related art, the embodiment of the present invention provides examples of a transmitting antenna calibration system and method, a receiving antenna calibration system and method, and an antenna calibration system, which solve one or more problems in the prior art question.

[0094] Figure 4 is an overall block diagram of an antenna calibration system according to an embodiment of the present invention. like Figure 4 As shown, the antenna calibration system 400 includes an antenna transmission calibration system and an antenna reception calibration system.

[0095] The antenna transmission calibration system includes: a pre-distortion module 402-2, which is used to perform digital pre-distortion processing on one or more transmission calibration sequences; one or more working transmission channels 402-4, which are used to respectively calibrate the pre-distorted transmission The sequence is processed, and the processed transm...

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Abstract

The invention provides antenna emission calibration system and method, antenna receiving calibration system and method, and an antenna calibration system, wherein the antenna calibration system comprises a predistortion module, one or more operation emission channels, a calibration receiving channel, a calibration emission channel and one ore more operation receiving channels, wherein the predistortion module is used for carrying out digital predistortion processing on an emission calibration sequence; the one or more operation emission channel are respectively used for processing the predistorted emission calibration sequence and transmitting the processed and predistorted emission calibration sequence to a coupling network, wherein the operation emitting channel comprises a power amplification part; the calibration receiving channel is used for receiving an emission calibration sequence from the coupling network; and the one or more operation receiving channels are respectively used for receiving a receiving calibration sequence from the coupling network. The invention ensures that DPD (Digital Pre-Distortion) and AC (Antenna Calibration) cooperatively work and eliminates the nonlinearity caused by power amplification, thereby not influencing the amplitude and the phase position of the calibration sequence, ensuring that the antenna calibration is more accurate and greatly saving hardware resources by adopting a sharing mode of an operation antenna and a calibration antenna.

Description

technical field [0001] The present invention relates to a wireless communication system, in particular to an antenna calibration system and method. Background technique [0002] In the system that makes up the smart antenna, the characteristics of the various components used, especially the active devices, are very sensitive to the operating frequency and ambient temperature, and the characteristics of each link are not changed due to the above reasons. The same, so the calibration of the smart antenna array should be carried out periodically while the wireless base station is running. [0003] The calibration of the transceiver antenna is completed through the following three steps during the operation of the base station and during operation: [0004] Step 1: Select a basic calibration sequence with good anti-white noise characteristics, and the calibration sequence is formed by periodic cyclic shifting of the basic calibration sequence. [0005] Step 2, transmit calibra...

Claims

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Application Information

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IPC IPC(8): H01Q3/26
Inventor 熊军房治国高桂香王桂珍王新生
Owner DATANG MOBILE COMM EQUIP CO LTD
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