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Low-complexity polarization parameter estimation and tracking device and method

A polarization parameter, low-complexity technology, applied in the field of signal processing, can solve problems such as large-scale antenna arrays that cannot really be applied, and cubic proportional growth.

Inactive Publication Date: 2020-02-25
HANGZHOU DIANZI UNIV
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Problems solved by technology

The classic MUSIC and ESPRIT methods can obtain relatively high parameter estimation accuracy, but they require covariance matrix and singular value decomposition, and the amount of calculation it brings increases proportionally to the cube of the number of antennas, so high-cost system hardware implementation is introduced cost and complexity
Therefore, these algorithms are only suitable for a small number of digital antenna arrays, and cannot really be applied to large-scale antenna arrays in the future

Method used

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  • Low-complexity polarization parameter estimation and tracking device and method

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Embodiment 1

[0062] see figure 1 , shows the schematic structure of the low-complexity polarization parameter estimation and tracking device of the embodiment of the present invention Figure 1 A low-complexity polarization parameter estimation and tracking device, including an antenna signal processing module 11, used to figure 2 Analog signals received by the hybrid dual-polarized antenna array shown are beamformed and converted to digital signals;

[0063] The polarization parameter estimation module 12 is configured to process the output of the antenna signal processing module 11 to estimate the incoming wave polarization parameter.

[0064] The antenna signal processing module 11 includes a plurality of sub-array signal processing modules 111, and the sub-array signal processing module 111 further includes a plurality of dual-polarization elements composed of elements along the x-axis and y-axis polarization directions for receiving incoming analog signals The sub-array phase shift...

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Abstract

The invention discloses a low-complexity polarization parameter estimation and tracking device and method. The device comprises an antenna signal processing module and a polarization parameter estimation module; the antenna signal processing module comprises multiple subarray signal processing modules, analog signal beams received by a mixed dual-polarized antenna array is formed and converted into a digital signal; and the polarization parameter estimation module is used for performing signal processing on the output of the antenna signal processing module to estimate an incoming wave polarization parameter. The signal is received by adopting a plane mixed dual-polarized antenna array, the self-adaptive tracking and estimation of the incoming wave angle of arrival can be sufficiently utilized to improve the beam forming receiving signal-to-noise ratio, thereby improving the estimation precision and convergence speed of the parameter estimation, and the calculation process only relatesto ordinary four arithmetic operation, the calculated quantity is small, and the realize is fast.

Description

technical field [0001] The invention belongs to the technical field of signal processing, and relates to a low-complexity polarization parameter estimation and tracking device and method. Background technique [0002] Hybrid antenna array, as a new adaptive antenna structure supporting future millimeter-wave high-speed communication, has attracted extensive attention in the field of array signal processing due to its potential advantages in balancing hardware cost and performance, array gain, and transceiver size. It consists of multiple analog sub-arrays, each containing a digital processing link. On the one hand, the use of analog subarrays can effectively generate antenna gain and alleviate the space limitation problem of the RF link. On the other hand, multiple digital links can provide multiplexing capability, high flexibility, adaptability and performance optimization. [0003] The traditional single-polarization antenna can only receive the single-directional electr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S3/14
CPCG01S3/14
Inventor 李航程知群
Owner HANGZHOU DIANZI UNIV
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