Dimensionality reduction method for large-scale mimo antenna array and system using the method

An antenna array, a large-scale technology, applied in the field of antenna arrays, to achieve the effect of reducing the number of radio frequency links, maintaining performance, and reducing complexity

Active Publication Date: 2017-12-19
TSINGHUA UNIV
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However, this solution is at the expense of performance, and further compensation measures such as compensation algorithms are required

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  • Dimensionality reduction method for large-scale mimo antenna array and system using the method
  • Dimensionality reduction method for large-scale mimo antenna array and system using the method
  • Dimensionality reduction method for large-scale mimo antenna array and system using the method

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Embodiment Construction

[0028] The implementation of the present invention will be described in detail below in conjunction with the drawings and examples.

[0029] The present invention provides a dimensionality reduction method for a large-scale MIMO antenna array, which forms several directional basic beams in the airspace by introducing a passive transformation network into the array, or directly adopting a specially designed array antenna; these directional basic beams With different spatial orientations, each fundamental beam corresponds to a certain angular spatial coverage, thus establishing a one-to-one correspondence between angular spatial coverage and array input and output. When receiving, the amplitude-phase distribution on the array elements in the array is transformed into the amplitude-phase distribution on the base beam; when transmitting, the amplitude-phase weighting applied to the array elements in the array is transformed into the amplitude-phase distribution applied on the base ...

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Abstract

A dimensionality reduction method for a massive MIMO antenna array, using a passive transformation network to form several fundamental beams with different spatial orientations in the air domain, and corresponding the input and output of the array with these fundamental beams to establish the array input and output and angular spatial coverage The one-to-one correspondence relationship; then according to the specific requirements of the target angular space coverage, the base beam is windowed, and only the base beams inside and near the target angular space coverage are reserved to achieve dimensionality reduction. Dimensionality reduction can be two-dimensional It can also be one-dimensional, and can be flexibly configured according to the specific requirements of the target angular space coverage; the present invention also provides a corresponding system, the front and transformation network can be designed separately or integrated, and the present invention can The number of radio frequency links in the massive MIMO antenna array is greatly reduced, and the complexity of the massive MIMO system is reduced at the hardware level.

Description

technical field [0001] The invention belongs to the technical field of antenna arrays, and in particular relates to a dimensionality reduction method of a massive MIMO antenna array and a system using the method. Background technique [0002] In recent years, with the popularization of the third-generation mobile communication technology and the promotion of the fourth-generation mobile communication technology, the channel capacity and system capacity of the mobile communication system have made great progress. Multiple-Input Multiple-Output (MIMO) technology, an emerging wireless communication technology that utilizes airspace resources, is an important pillar of this progress. It uses the antenna arrays at the transmitting and receiving ends to separate multipath channels in the air domain, and simultaneously transmit and receive multiple air domain code streams on the separated channels, so as to achieve Space division multiplexing doubles the rate of wireless communica...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q21/29H01Q23/00
Inventor 张志军王涵常乐冯正和
Owner TSINGHUA UNIV
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