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Antenna reciprocity calibration method, device and system

A calibration method and reciprocity technology, applied in the multi-antenna field, can solve complex calibration estimation algorithms, increase hardware circuits, etc., to achieve the effects of reducing pilot pollution, reducing system complexity, and saving hardware costs

Active Publication Date: 2021-11-02
COMBA TELECOM SYST CHINA LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Based on this, it is necessary to provide an antenna reciprocity calibration method, device and system for the traditional antenna calibration technology to compensate the radio frequency response of the base station radio frequency and the receiving circuit, which requires additional hardware circuits or complex calibration estimation algorithms

Method used

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Embodiment Construction

[0030] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. A preferred embodiment of the invention is shown in the drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the present invention will be thorough and complete.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0032] MIMO t...

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Abstract

The invention relates to an antenna reciprocity calibration method, device and system. Among them, the antenna reciprocity calibration method obtains the first receiving sequence of the antenna to be calibrated and the second receiving sequence of the calibrated antenna; obtains the calibration coefficient according to the ratio of the first receiving sequence and the second receiving sequence, and sends the calibration coefficient to Give the antenna to be calibrated and complete the calibration; no additional calibration circuit is required, and there is no need to send a large number of pilot signals, saving hardware costs and reducing pilot pollution; self-calibration of the base station can be realized without UE participation, reducing system complexity; At the same time, no complex calculation method is required, the complexity of the calibration algorithm is reduced, and the calculation time is saved.

Description

technical field [0001] The present invention relates to the field of multi-antenna technology, in particular to an antenna reciprocity calibration method, device and system. Background technique [0002] In an LTE (Long Term Evolution, long-term evolution) system, a MIMO (Multiple-Input Multiple-Output, multiple-input multiple-output system) technology can effectively improve spectrum utilization and system capacity. In MIMO technology, time division duplex will become the main communication method. The actual antenna system includes the transmitting and receiving system of the antenna, and the transmitting and receiving system of the base station. The space sending and receiving system satisfies reciprocity; the base station sending and receiving system cannot satisfy reciprocity due to the difference of radio frequency circuits. If uplink channel feedback information is used at the base station to perform downlink precoding, system performance will be seriously affected....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B17/12H04B17/21H04B7/0413
CPCH04B7/0413H04B17/12H04B17/21
Inventor 姜成玉刘重军付杰尉刁穗东
Owner COMBA TELECOM SYST CHINA LTD
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