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Beamforming method and device for adaptive antenna grouping and large-scale mimo system

An adaptive antenna and beamforming technology, applied in diversity/multi-antenna systems, radio transmission systems, transmission systems, etc., can solve the problems of poor system performance and the inability to guarantee strong antenna correlation at all times, and achieve the effect of improving system performance.

Active Publication Date: 2022-03-08
HENAN UNIVERSITY OF TECHNOLOGY
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Problems solved by technology

[0006] The purpose of the present invention is to provide a beamforming method and device for adaptive antenna grouping, and a massive MIMO system, which solves the problem that the existing technology cannot be used in the process of hybrid precoding of transmission data in a millimeter-wave massive MIMO system. Ensure the strong correlation between the antennas of the system, which leads to the problem of poor system performance

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  • Beamforming method and device for adaptive antenna grouping and large-scale mimo system
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  • Beamforming method and device for adaptive antenna grouping and large-scale mimo system

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Embodiment Construction

[0041] Embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0042] Embodiment of millimeter wave massive MIMO system:

[0043] The millimeter-wave large-scale MIMO system of the present invention includes a baseband, a radio frequency link and an antenna respectively arranged at the transmitting end and the receiving end, and the transmitting end is configured with N t Antennas, the receiving end is configured with N r root antenna. The channel correlation of massive MIMO is closely related to the physical parameters of the antenna and the characteristics of scatterers. In the actual signal transmission process, as the number of scatterers and the distance between antennas change, the correlation of massive MIMO systems also changes. It will change accordingly, and it is impossible to ensure that the signal fading between antennas is independent of each other at all times, thus affecting the capacity ...

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Abstract

The invention relates to a beamforming method and device for adaptive antenna grouping and a large-scale MIMO system, belonging to the technical field of broadband wireless communication, grouping is performed according to the correlation between antennas at the transmitting end, and the antennas at the transmitting end are divided into N r Group, N r is the number of antennas at the receiving end, so that the correlation between the antennas at the transmitting end in each group meets the setting requirements; the antennas in each group after grouping are selected according to the incremental antenna selection method, and the best antenna in each group is selected. Optimal antenna; the selected optimal antenna is mapped to the radio frequency link, and the hybrid precoding processing algorithm is used for beamforming. It solves the problem that the prior art cannot guarantee the strong correlation between the antennas of the system at all times during the mixed precoding process of the transmission data in the millimeter wave massive MIMO system, which leads to poor system performance.

Description

technical field [0001] The invention relates to a beamforming method and device for adaptive antenna grouping and a massive MIMO system, belonging to the technical field of broadband wireless communication. Background technique [0002] As the global energy consumption and environmental pollution become increasingly prominent, the industry calls for green communications. The millimeter-wave massive MIMO system is equipped with a large number of antennas at the base station to serve multiple end users, resulting in an increase in hardware cost and power consumption, which has a certain impact on the wide-scale commercial use of the millimeter-wave massive MIMO system. [0003] The precoding technology can effectively improve the system spectrum efficiency and reduce the bit error rate, and it can be easily used in the millimeter wave massive MIMO system. In digital precoding, one transmitter antenna corresponds to one radio frequency link (RF), which can theoretically achiev...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/0413H04B7/0456H04B7/06H04B7/08
CPCH04B7/0413H04B7/0456H04B7/0617H04B7/086
Inventor 杨静张丽萍
Owner HENAN UNIVERSITY OF TECHNOLOGY
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