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Virtual array antenna based angle estimation method for improving accuracy

A technology of virtual antennas and virtual array elements, which is applied in directions such as direction finders and radio wave director components using radio waves, can solve the problems of fast moving antenna arrays, high cost, and inability to apply fast-changing channels, and achieves the realization of The effect of low cost, improved accuracy, and high estimation accuracy

Active Publication Date: 2015-06-10
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0007] It can be seen that the application of the above-mentioned traditional virtual antenna array method in mmWave channel angle estimation will have problems such as high cost or cannot be applied to fast-changing channels and the antenna array needs to be moved quickly.

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  • Virtual array antenna based angle estimation method for improving accuracy

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Embodiment Construction

[0020] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0021] The core idea of ​​the present invention is: for a millimeter-wave communication system under a large-scale uniform linear antenna array, several virtual array elements are added to the antenna array at the transceiver end to obtain a larger aperture, thereby improving the accuracy of angle estimation. This method does not need to add additional physical entities of the antenna element, because when the compression reconstruction method based on random measurement is used, the pilot / training sequence can randomly select the transmitting antenna element, and by designing the corresponding training method, the pilot / training sequence The training sequence is not transmitted from the virtual array element, and the random measurement de...

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Abstract

The invention discloses a virtual array antenna based angle estimation method for improving accuracy. The virtual array antenna based angle estimation method is used for a large-scale uniform linear array based millimeter wave communication system, and the sparse characteristics of millimeter wave channels and a compressing reconstruction algorithm are utilized to estimate an antenna transmitting angle and an arrival angle of each channel of multiple channels by adding a plurality of virtual array elements on antenna arrays at the receiving end and the transmitting end. By means of the virtual array antenna based angle estimation method, the angle estimation accuracy can be improved, pilot frequency sequence expenditure can be reduced, and antenna array hardware change is not needed.

Description

technical field [0001] The invention relates to mobile communication technology, in particular to an angle estimation method based on a virtual antenna array for improving precision. Background technique [0002] In order to meet the high-speed data transmission rate and large capacity requirements of the next-generation mobile communication system (5G), we need to find spectrum resources with larger transmission bandwidth and research transmission technologies with high spectral efficiency. The available transmission bandwidth of the millimeter wave frequency band can exceed 1GHz, which is a potential spectrum resource that provides a larger transmission bandwidth. Therefore, millimeter wave communication technology has broad development prospects. The communication frequency band of the millimeter wave band is high, and the signal path loss is very serious. Compared with the microwave communication, the signal attenuation of the millimeter wave communication is about 20-40...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S3/12
CPCG01S3/12
Inventor 彭岳星韩灵怡赵慧
Owner BEIJING UNIV OF POSTS & TELECOMM
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