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Method and device for recursive average processing based on beamforming

A recursive averaging and beamforming technology, applied in the field of communication, can solve the problems of inaccurate DOA angle, incorrect weighting coefficient, affecting beamforming gain, etc., and achieve the effect of solving the problem of angle ambiguity

Active Publication Date: 2014-08-20
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] There is no solution to the angle ambiguity in the prior art. When the antenna array spacing is greater than 0.5 times the wavelength, the angle ambiguity problem will occur, and the same DOA estimation method as when the antenna array spacing is less than 0.5 times the wavelength is used, so that the estimated The DOA angle fluctuates between multiple angles with relatively large intervals (that is, fluctuates between the real DOA angle and its fuzzy angle), the DOA angle obtained after multiple recursive averaging is inaccurate, and the weighting coefficient calculated based on the DOA angle is incorrect. Directly Affects Beamforming Gain

Method used

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  • Method and device for recursive average processing based on beamforming
  • Method and device for recursive average processing based on beamforming

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Embodiment 1

[0033] Embodiment 1 of the present invention provides a recursive average processing method based on beamforming, which can be applied to scenarios where the antenna array spacing is greater than 0.5 times the wavelength, and can solve the angle ambiguity caused by multiple recursive average processing. accurate questions such as figure 1 As shown, the method includes the following steps:

[0034] Step 101, perform DOA estimation to obtain DOA angle X.

[0035] Step 102, judging whether the DOA angle X is an angle that can directly participate in the recursive averaging process; if yes, execute step 103; if not, execute step 104.

[0036] Step 103, use the DOA angle X to perform recursive average processing; then use the result of the recursive average processing to calculate a shaping vector for shape shaping.

[0037] Step 104, obtain the blur angle Y corresponding to the DOA angle X, and use the blur angle Y to perform recursive average processing; then, the result of the...

Embodiment 2

[0063] Based on the above application scenario, since the weighting coefficients of each array element with an antenna spacing of 0.65 wavelength will form two beams within a range of 180 degrees, resulting in the problem of angular ambiguity, based on this, Embodiment 2 of the present invention provides a beamforming-based recursive The average processing method is to determine a reference quadrant according to the range of angular ambiguity, and convert the measured angle of another quadrant to the reference quadrant, thereby solving the problem of angular ambiguity; image 3 As shown, the recursive averaging processing method based on beamforming includes the following steps:

[0064] Step 301, select an angle of 0° to 119° as a reference quadrant.

[0065] Step 302 , search for the fuzzy angle of each angle in the reference quadrant in another non-reference quadrant (120 degrees to 180 degrees) by traversal search.

[0066] In the embodiment of the present invention, the ...

Embodiment 3

[0074]Based on the above application scenario, since the weighting coefficients of each array element with an antenna spacing of 0.65 wavelength will form two beams within a range of 180 degrees, resulting in the problem of angular ambiguity, based on this, Embodiment 3 of the present invention provides a beamforming-based recursive Averaging method to resolve angular ambiguity; as in Figure 4 As shown, the recursive averaging processing method based on beamforming includes the following steps:

[0075] Step 401 , perform DOA estimation according to the DOA estimation algorithm to obtain the DOA angle X; the DOA estimation algorithm obtains the DOA angle by finding the peak value of the parameter with DOA as a function.

[0076] Step 402, compare the angle X estimated this time with the DOA estimated angle A of the previous recursive averaging process; if the difference between the angle X and the angle A is lower than the preset value (such as 90 degrees), then execute step ...

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Abstract

The invention discloses a method and a device for recursive average processing based on beamforming. The method comprises the steps of: making a DOA estimate of an angle of arrival to obtain a DOA angle X and judging whether the DOA angle X is an angle which can be directly involved in the recursive average processing; using the DOA angle X to carry out recursive average processing if the DOA angle X is an angle which can be directly involved in the recursive averaging processing; and obtaining a fuzzy angle Y corresponding to the DOA angle X and using the fuzzy angle Y to carry out recursive averaging processing if not. In the embodiment of the invention, an appropriate DOA angle can be used and involved in the recursive average processing, and a comparatively ideal beamforming gain can be obtained, thus solving the problem of angle ambiguity occurred when spacing of an antenna array is larger than 0.5 times wavelength.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a recursive average processing method and equipment based on beamforming. Background technique [0002] In recent years, the rapid development of mobile communications and the development of other wireless applications have made wireless spectrum resources increasingly tight. On this basis, to further increase the system capacity and meet the needs of the increase in the number of users and the development of new services, it is necessary to improve the spectrum utilization of the system. ; Based on this, beamforming has been widely used because its clear directional beam can increase the coverage distance, improve signal quality, improve the ability to penetrate buildings, and increase the throughput of cell edge users. [0003] The principle of beamforming is to use an antenna array to form a directional beam in space by adjusting the weighting coefficients on ea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/06
Inventor 刘龙李琼吴凯
Owner DATANG MOBILE COMM EQUIP CO LTD
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