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Method for selecting adaptive beam-forming mode under large-scale MIMO (Multiple-Input Multiple-Output) system

An adaptive beam, large-scale technology for communications

Active Publication Date: 2015-07-08
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

However, the beamforming mode selection scheme in massive MIMO systems has never been studied before and is still one of the unsolved problems in this field

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  • Method for selecting adaptive beam-forming mode under large-scale MIMO (Multiple-Input Multiple-Output) system
  • Method for selecting adaptive beam-forming mode under large-scale MIMO (Multiple-Input Multiple-Output) system
  • Method for selecting adaptive beam-forming mode under large-scale MIMO (Multiple-Input Multiple-Output) system

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[0038] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0039] An embodiment of the present invention proposes a method for selecting an adaptive beamforming mode in a massive MIMO system, see figure 1 , the method includes:

[0040] Step 101: Select a channel model and obtain base station antenna array parameters, including the number of antennas and the arrangement of antenna elements;

[0041] Ste...

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Abstract

The invention provides a method for selecting an adaptive beam-forming mode under a large-scale MIMO (Multiple-Input Multiple-Output) system. The method comprises the following steps: selecting a channel model and acquiring base station antenna array parameters, including the quantity of antennas and the arrangement way of an antenna array; representing the system average throughputs of two users in a single beam-forming mode and a dual beam-forming mode as the functions of the azimuth angles of the two users respectively in combination with the base station antenna array parameters and the channel model; calculating the difference between the azimuth angles of the two users when the system average throughputs in the single beam-forming mode and the dual beam-forming mode are equal to each other, and marking the difference as an azimuth angle threshold value; and adopting the dual beam-forming mode for the two users whose difference between the azimuth angles is greater than the azimuth angle threshold value, and adopting the single beam-forming mode for the two users whose difference between the azimuth angles is smaller than the azimuth angle threshold value. Adaptive selection of the beam-forming mode according to the user position can be realized in order to maximize the system throughput.

Description

technical field [0001] The invention relates to communication technology, in particular to a method for selecting an adaptive beamforming mode in a massive MIMO system. Background technique [0002] At present, massive MIMO (Multiple-Input Multiple-Output) systems are becoming a new research hotspot in the field of multi-antenna systems. Compared with the traditional MIMO system, in the massive MIMO system, the base station antenna array is equipped with dozens or even hundreds of antenna elements. It is precisely because of the substantial increase in the number of antenna units that we need to take new influencing factors into account in various scenarios, which brings opportunities and challenges to how to optimize system performance. On the one hand, compared with the single-antenna system, the biggest advantage of the multi-antenna system is that it can provide higher capacity, which can meet the demand for higher capacity of the current communication network, and can ...

Claims

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Application Information

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IPC IPC(8): H04B7/06
Inventor 崔高峰王卫东邹珣唐明环张英海
Owner BEIJING UNIV OF POSTS & TELECOMM
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