Channel coherence detection method for intelligent antenna base station

A test method and smart antenna technology, applied in the field of coherence testing of array channels, can solve problems such as no channel coherence testing

Inactive Publication Date: 2006-05-24
晋江市高新技术开发办公室
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  • Abstract
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Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a channel coherence test method for smart antenna base stations, which solves the problem that there is no special instrument in the prior art for system coherence test between channels

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  • Channel coherence detection method for intelligent antenna base station
  • Channel coherence detection method for intelligent antenna base station
  • Channel coherence detection method for intelligent antenna base station

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Embodiment Construction

[0027] Specific embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0028] figure 1 It is a flow chart of the steps of the inventive method; the channel coherence testing method for the smart antenna base station of the present invention, the main contents include:

[0029] Step 100, using any channel in the channels as a reference channel, another channel as a channel to be tested, and closing the remaining channels; keep the weight of the reference channel unchanged, and change the weight of the channel to be tested so that The combined in-band power of the measured channel and the reference channel is the minimum and the minimum value of the in-band power is used as the anti-phase superposition power value, and the weight at this time is recorded as the weight of the anti-phase superposition, and the weight of the anti-phase superposition The phase plus or minus 180° and record the synthesized in-b...

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Abstract

Being in use for testing multiple up going channels or multiple down going channels of base station, the method includes uses one channel as standard channel, another channel as channel to be tested, and closes up other channels; keeping weight value of standard channel unchanged, and changing weight value of channel to be tested to make synthetic power in-band minimum, which is as value of first power; adding 180 degrees to or subtracting 180 degrees from the weight value and recording the synthetic power in-band as value of second power at this point; determining coherence between channel to be tested and standard channel based on different value between second and first values of power; keeping standard channel unchanged, and selecting the rest of channels one by one as channel to be tested; determining the said coherence from one channel to another. The invention solves issue of that there is no dedicated instrument to measure coherence between channels.

Description

technical field [0001] The invention relates to the coherence test of the array channel, in particular to the coherence test method of the array channel of the intelligent antenna base station system using a broadband transceiver. Background technique [0002] Smart antennas have begun to be used in commercial mobile base station systems, such as intelligent PCS (Personal Communications Services) base stations and TD-SCDMA (Time Division Synchronous Code Division Multiple Access) mobile base station systems using array antennas. Smart antenna is an optional technology in WCDMA (Wideband Code Division Multiple Access) and CDMA2000 (Qualcomm's Code Division Multiple Access standard), but it will become one of the mandatory technologies in 4G (fourth generation mobile communication system). [0003] The coherence of the channel is an important index in the smart antenna base station. From the perspective of adaptive uplink reception alone, the coherence between channels is not...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B17/327H04B17/345
Inventor 康凤岐王云峰毛建华
Owner 晋江市高新技术开发办公室
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