Low-complexity beam angle estimation device and method based on power detection

An angle estimation, low-complexity technology, applied in radar signal processing, wireless communication, to achieve the effect of strong robustness, low complexity and strong anti-noise performance

Pending Publication Date: 2022-01-28
南京艾克安特无线科技有限公司
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Problems solved by technology

[0004] Technical problem: Aiming at the limitations of the traditional beam angle estimation algorithm in mobile communication or radar signal processing, the present invention proposes a low-complexity beam angle estimation device and method based on power detection, by adjusting the phase offset of the array element Then multiple measurements indirectly obtain the angle information of the received signal

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  • Low-complexity beam angle estimation device and method based on power detection
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  • Low-complexity beam angle estimation device and method based on power detection

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Embodiment Construction

[0026] The technical solutions of the present invention will be further introduced below in conjunction with specific embodiments.

[0027] This specific embodiment discloses a low-complexity beam angle estimation device based on power detection, including an array antenna 1, a phase shifter 2, a power combiner 3, a power measurement unit 4, and an angle estimation unit 5; wherein the power measurement unit is composed of It consists of a frequency conversion module 4-1 and an ADC sampling module 4-2.

[0028] In the low-complexity beam angle estimation device based on power detection, the array antenna includes multiple antenna elements, wherein the two radio frequency signals received by the first array element 1-1 and the second array element 1-2 correspond to The baseband signal is x 1 (n) and x 2 (n). x 1 (n) and x 2 (n) Phase-shift Φ through the first phase shifter 2-1 and the second phase shifter 2-2 respectively 1 and Φ 2 Then it is input to the power combiner, ...

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Abstract

The invention discloses a low-complexity beam angle estimation device and method based on power detection. The device comprises an array antenna, a phase shifter, a power combiner, a power measurement unit, an angle estimation unit and the like. Different from the traditional angle estimation technology based on spatial spectrum estimation, the angle of the beam is estimated by detecting the power of the received signal through the two antenna array elements. Only the signal power needs to be detected, and operation such as solving of a correlation matrix in a traditional method does not need to be used so that the method has extremely low complexity. Meanwhile, the device has strong anti-noise capability, and simulation and actual test results show that the angle estimation method provided by the invention has relatively high precision and robustness. Compared with the traditional method, the method has the remarkable advantage that information corresponding to each array element does not need to be obtained, and thus the method is suitable for wireless systems of analog beamforming and hybrid beamforming frameworks which are widely used at present.

Description

technical field [0001] The following description relates to the field of wireless communication technology and the field of radar signal processing. More specifically, the following description relates to low-complexity beam angle estimation techniques based on power detection. Background technique [0002] In order to cope with people's rapidly increasing requirements for communication rates, the fifth generation mobile (5G) communication system has emerged as the times require. Among them, multi-antenna beamforming and beamforming technologies have received extensive attention because they can efficiently realize space division multiplexing. A key point of this technology is how to quickly and efficiently obtain the angle information of the incident beam at the receiving end to adjust the phase of the antenna array elements. [0003] DOA (Direction of Arrival) estimation technology has been widely studied and applied in many fields such as radar signal processing. Among...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S3/14H04B7/08
CPCG01S3/14H04B7/086
Inventor 周健义翟建锋于志强徐壮周山岳
Owner 南京艾克安特无线科技有限公司
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