Apparatus and method for correcting TDD intelligent antenna system

An antenna system, duplex intelligence technology, applied in the field of communication, can solve the problems of inaccurate calibration, low complexity and system performance impact, etc.

Active Publication Date: 2008-07-30
ZTE CORP
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Problems solved by technology

[0007] In view of the above analysis, the present invention aims to provide a channel gain calibration and amplitude-phase consistency correction that is completed at the same time through one correction, with faster speed, better performance, lower complexity, an...

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  • Apparatus and method for correcting TDD intelligent antenna system
  • Apparatus and method for correcting TDD intelligent antenna system
  • Apparatus and method for correcting TDD intelligent antenna system

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Embodiment Construction

[0083] Preferred embodiments of the present invention will be specifically described below with reference to the accompanying drawings, wherein the accompanying drawings constitute a part of the application and are used together with the embodiments of the present invention to explain the principle of the present invention.

[0084] For ease of understanding, the principle of the present invention will be explained below by taking TD-SCDMA (Time Division-Synchronous Code Division Multiple Access) smart antenna system, a typical time division duplex smart antenna system in the third generation mobile communication, as an example.

[0085] As shown in Figure 1, Figure 1 is a schematic flow diagram of a method for correcting a time division duplex smart antenna system according to an embodiment of the present invention, which may specifically include the following steps:

[0086] Step 101: offline gain measurement; specifically, in the transceiver unit of each antenna channel in t...

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Abstract

The invention discloses a correction method and a device of a time division duplex intelligent antenna system, the method comprises that: the initialization of a channel is carried out; the channel correction of the system is started, the correction of a power detection channel and a detection receiving channel is carried out according to the gains of the power detection channel and the detection receiving channel which are obtained under the current working point and the temperature; the gain calibration and the amplitude-phase consistency calibration of an uplink channel are carried out simultaneously at the protection time slot according to the real-time obtained gain of the detection receiving channel and a gain inequality of the detection channel and the detection receiving channel; the gain calibration and the amplitude-phase consistency calibration of a down transmit channel are carried out simultaneously at the downlink pilot time slot according to the obtained target weight value of the downlink transmit channel and the ganged gain regulating quantity of the downlink transmit channel. The invention can effectively solve the key correction problem in the intelligent antenna system, realize the corrections of the gain accuracy and the amplitude-phase consistency errors of the array channel, simplify the algorithm and have the high correction precision.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a method and device for correcting a time division duplex smart antenna system. Background technique [0002] The smart antenna system is based on a multi-antenna system, which controls the direction of the antenna beam by weighting the amplitude and phase of the signals received and transmitted by the array channel to achieve directional transmission and reception for desired users. Therefore, it is required that the channels that make up the multi-antenna system have consistent amplitude and phase characteristics. However, the transmission characteristics of each channel in the actual multi-antenna system are inconsistent, so the calibration of the smart antenna system is a key technology of the smart antenna system and a prerequisite for realizing the smart antenna technology. [0003] Among the most commonly used calibration methods in the existing TDD smart antenna s...

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Application Information

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IPC IPC(8): H04B7/02H04B17/00H04Q7/34H04B17/11
CPCY02B60/50
Inventor 王斌韩冬刘丽莉
Owner ZTE CORP
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