Antenna calibration method and device

A calibration method and antenna technology, applied in the directions of diversity/multi-antenna system, space transmit diversity, etc., can solve the problems of each channel error of coupling network and multi-channel radio frequency channel error, and achieve the effect of simple implementation and small modification.

Active Publication Date: 2011-09-21
DATANG MOBILE COMM EQUIP CO LTD
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Problems solved by technology

[0049] Therefore, when the calibration noise can be ignored, the error of each channel of the ...

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  • Antenna calibration method and device
  • Antenna calibration method and device
  • Antenna calibration method and device

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Embodiment Construction

[0075] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0076] In order to achieve the purpose of the present invention, the present invention discloses a method for antenna transmission calibration, figure 2 Shown is a block flow diagram of an antenna transmission calibration method, the method comprising the following steps:

[0077] S201: The baseband signal processor sends a calibration sequence through a transmitting radio frequency channel, the calibration sequence reaches the calibration channel through a receiving coupling network, and the calibration signal processor receives the ca...

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Abstract

The embodiment of the invention discloses an antenna transmission calibration method, which comprises that: a baseband signal processor transmits a calibration sequence by a transmission radio frequency channel, and a calibration signal processor receives the calibration sequence by a calibration channel; the calibration signal processor judges whether errors of coupling networks are required to be compensated or not according to the accuracy of a receiving coupling network, calculates a calibration coefficient by the received calibration sequence, and transmits the calculated calibration coefficient to the baseband signal processor; and the baseband signal processor performs coefficient compensation according to the calibration coefficient. The embodiment of the invention also discloses an antenna transmission calibration device, which comprises the baseband signal processor, the calibration signal processor, a coupling signal processor and a coupling data memory. The embodiment of the invention can take the errors among channels of the coupling networks into account in calibration, perform the error compensation on the coupling networks, and effectively improve the antenna calibration accuracy, thereby improving beamforming performance.

Description

technical field [0001] The present invention relates to the field of mobile communication, in particular, the present invention relates to a method and device for antenna calibration. Background technique [0002] Mobile and broadband have become the development direction of modern communication technology. How to eliminate the influence of co-channel interference, multiple access interference and multipath fading has become the main factor that people consider when improving the performance of wireless mobile communication systems. In recent years, smart antenna technology has become a research hotspot in the field of mobile communication. [0003] Smart antenna technology brings great advantages to mobile communication systems. For example, when using smart antennas, other baseband digital signal processing technologies, such as joint detection, interference cancellation, etc., are used in combination. The sum of the received signals, if the maximum power combining algor...

Claims

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Application Information

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IPC IPC(8): H04B7/06
Inventor 蒋峥孙长果于洋
Owner DATANG MOBILE COMM EQUIP CO LTD
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