Method and device for antenna calibration

An antenna calibration and sending direction technology, applied in the field of communication, can solve the problem of low channel information accuracy of radio frequency channels, and achieve the effects of improving the accuracy of the compensation coefficient between channels, increasing the length, and reducing the number of radio frequency channels

Active Publication Date: 2019-11-08
DATANG MOBILE COMM EQUIP CO LTD
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Problems solved by technology

When the antenna array is a large-scale smart antenna array, since the number of transmitted calibration pilot sequences mapped on each radio frequency channel is small, the channel estimation is performed according to the transmitted calibration pilot sequences mapped on each radio frequency channel, and each The channel information accuracy of the RF channel is low

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  • Method and device for antenna calibration
  • Method and device for antenna calibration
  • Method and device for antenna calibration

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Embodiment Construction

[0083] In order to make the purpose, technical solutions and beneficial effects of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0084] The embodiment of the present invention is suitable for transmitting and calibrating the antenna. The embodiment of the present invention is applicable to a system including multiple antennas. Generally, each antenna unit has a radio frequency channel in the sending direction. The embodiment of the present invention does not limit the number of radio frequency channels in the sending direction owned by one antenna unit.

[0085] In the embodiment of the present invention, the radio frequency channels in the sending direction in the antenna array are divided into M groups, where ...

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Abstract

Embodiments of the present invention relate to the field of communication technologies, and in particular to a method and device for antenna calibration, so as to improve the accuracy of transmission calibration. In the embodiment of the present invention, the radio frequency channels in the sending direction in the antenna array are divided into M groups, and the calibration pilot sequence is sent in each group of sending direction radio frequency channels in different sending time slots in a time-division manner. The number of radio frequency channels in the direction decreases, which increases the length of the intra-group transmission calibration pilot sequence mapped on each radio frequency channel used for channel estimation, thereby determining the accuracy of the inter-channel compensation coefficient of the radio frequency channel in each transmission direction get improved.

Description

technical field [0001] Embodiments of the present invention relate to the communication field, and in particular, to a method and device for antenna calibration. Background technique [0002] Smart antenna technology has brought great advantages to mobile communication systems. For example, smart antennas can be combined with baseband digital signal processing technology to perform joint detection and other tasks. 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 antenna needs to be calibrated periodically in the actual network. [0003] Antenna calibration is divided into sending calibration and receiving calibration. When performing transmission calibration on the radio frequency channel of the antenna, in the prior art, a frequ...

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): H04B7/06H04L25/02H04L27/00
CPCH04B17/12H04B17/11H04L5/0023H04L5/0048H04L25/0204H04L25/0228
Inventor李传军苏昕
OwnerDATANG MOBILE COMM EQUIP CO LTD