Method of quickly calculating far-field radiation field of large-scale MIMO array based on symmetric property

A fast computing, large-scale technology, applied in computing, design optimization/simulation, special data processing applications, etc., can solve the problems of difficult calculation and long time consumption of personal computer

Active Publication Date: 2016-08-31
THE PLA INFORMATION ENG UNIV
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  • Claims
  • Application Information

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Problems solved by technology

However, when the array scale is large, it will take a long time to use these numerical calculation methods, and it is even difficult for a personal computer to calculate

Method used

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  • Method of quickly calculating far-field radiation field of large-scale MIMO array based on symmetric property
  • Method of quickly calculating far-field radiation field of large-scale MIMO array based on symmetric property
  • Method of quickly calculating far-field radiation field of large-scale MIMO array based on symmetric property

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Embodiment 1

[0043] Example 1: Combining Figure 1-Figure 3 : A method for quickly calculating the far-field radiation field of a massive MIMO array based on symmetric characteristics, the method includes the following steps:

[0044] Step 1, determining the structure and parameters of the M×N element planar array antenna;

[0045] Determine the material, structure, operating frequency, spacing between planar array elements, and the number of rows and columns of a single antenna element.

[0046] Step 2, determining the sub-array size and extraction method in the large array;

[0047] For a large M×N array, a 5×5 array is used as a sub-array, where M is greater than 5 and N is greater than 5. For the calculation of the active unit pattern of each unit of the sub-array, the numerical algorithm or the HFSS software based on the finite element method are used for calculation; the full-wave simulation is carried out on the 5×5 small area array on the HFSS software, and only the ( 1, 1), (1,...

Embodiment 2

[0075] Example 2, combined with Figure 1-Figure 4 , Step 1. Determine the structure and parameters of the M×N element planar array antenna.

[0076] The coaxial feed patch antenna array is used to verify the correctness of the above method. The thickness of the dielectric substrate is 1.6mm, the length and width of the radiation patch are 28mm and 37.26mm respectively, the distance between the coaxial feed point and the center of the patch is 7mm, and the 1 / 4 working wavelength is 30mm. The HFSS design model of a rectangular microstrip antenna is as follows image 3 shown. The center of the model is located at the coordinate origin, the length direction of the radiation patch is along the x-axis direction, and the width direction is along the y-axis direction. The size of the dielectric substrate is twice that of the radiation patch. The reference ground and the radiation patch are replaced by ideal thin conductors. In HFSS, the ideal thin conductor is simulated by assigni...

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Abstract

The invention belongs to the field of electromagnetic numerical calculation, and specifically relates to a precise and quick calculation method of calculating the far-field radiation field of a large-scale MIMO array antenna based on the symmetric property of arrays. The method comprises the following steps: S1, determining the structure and parameters of an M*N planar array antenna; S2, determining the size and extraction mode of the sub-matrixes in a large array; S3, approximately calculating out the active unit pattern of each array element of the large array based on an extracted sub-matrix active unit pattern and by making use of the symmetric property of a homogeneous planar array; and S4, calculating the properties of the radiation field of the large array through superimposed calculation. The method of the invention is based on extension of a small array to a large array, and is of high calculation speed. By using the superposition principle of field, the method is flexible in calculation, and has a wide scope of application. The method can be applied to both homogeneous linear and planar arrays. Through superimposed calculation, a large amount of matrix operation is avoided, the amount of calculation is reduced, and the calculation speed is improved.

Description

technical field [0001] The invention belongs to the field of electromagnetic numerical calculation, and in particular relates to an accurate and fast calculation method for solving the far-field radiation field of a large-scale MIMO array antenna by using the symmetry characteristic of the array. Background technique [0002] The large-scale antenna array system (Massive MIMO) is considered to be the most potential transmission technology for 5G in the future, and it is the expansion and extension of MIMO technology in the existing 4G network. The Massive MIMO system plays a very good role in increasing the system capacity, improving the communication quality and the versatility of devices in complex environments. It conforms to the current development trend that radio frequency components are closer to the antenna, reduces maintenance costs and energy costs, and further improves network performance and deployment flexibility. It plays an important role in the fifth-generati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 朱明林刘起坤钟州黄开枝陈国虎周游马克明韩乾靳彦青
Owner THE PLA INFORMATION ENG UNIV
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