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Method and device for calculating arrival direction in an intelligent antenna system

A smart antenna and algorithm technology, applied in diversity/multi-antenna systems, communication between multiple stations, space transmit diversity, etc., can solve problems such as computing

Inactive Publication Date: 2008-12-24
ZTE CORP
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Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a method and device for calculating DOA in a smart antenna system, and solve the problem of how to calculate user DOA according to the beamforming weight value of the non-DOA reference method

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  • Method and device for calculating arrival direction in an intelligent antenna system
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  • Method and device for calculating arrival direction in an intelligent antenna system

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Embodiment Construction

[0042] figure 1 , Figure 4 and Figure 6 In the illustrated embodiment, the multipath DOA of the user is calculated according to the beamforming weights of the non-DOA reference method. The DOA calculation device provided by the present invention is as figure 1 As shown, the DOA calculation device 40 includes: a smart antenna 10, the smart antenna 10 is composed of an array of array elements, such as array element 1, array element 2,..., array element Ka; A radio frequency unit 11; an adaptive weight calculation unit 12 for calculating beamforming weights; a DOA estimation unit 13 for calculating DOAs of different paths according to the beamforming weights. The DOA calculation 40 provided by the present invention is a part of the smart antenna system 41, such as Figure 4 shown. The smart antenna system 41 among the present invention is arranged on the base station 60, as Figure 6 shown.

[0043] In this embodiment, the adaptive weight calculation unit 12 is used to c...

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Abstract

The invention relates to a method for calculating arrival direction in a smart antenna system. The method comprises the following steps: step one, an adaptive weigh value calculating unit figures out a user wave-forming weight value by using the reference algorithm of non-arrival direction; step two, an arrival direction estimating unit figures out a forming direction amplitude in a whole angle scope by adopting a space searching method; step 3, the arrival direction estimating unit finds out a maximal peak point and an angle corresponding to the maximal peak point from the forming direction amplitude. The method can directly acquire a DOA and a multidiameter DOA according to the wave-forming, thereby solving the DOA acquisition problems of a non-DOA reference method.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a method and device for calculating the direction of arrival DOA in an intelligent antenna system. Background technique [0002] Smart antenna technology is a new technology that is getting more and more attention in the field of mobile communication, especially in the TDD working mode, the uplink and downlink channels use the same carrier frequency, it can be considered that the uplink and downlink channels of the same user are completely symmetrical, so It is beneficial to the use of smart antenna technology. [0003] The smart antenna system consists of a group of antenna arrays, connected transceivers and advanced digital signal processing algorithms. The smart antenna can adaptively adjust the direction of the beam according to the change of the user's position, so that the main lobe is aligned with the desired user, and the null or side lobe is aligned with the undesi...

Claims

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Application Information

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IPC IPC(8): H04B7/04H04B7/26
Inventor 卢勤博王强
Owner ZTE CORP
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