Multi-user millimeter wave communication beam forming method under partial connection architecture

A beamforming and digital beamforming technology, which is applied in radio transmission systems, transmission monitoring, electrical components, etc., to achieve the effect of reducing time complexity and increasing average and rate

Active Publication Date: 2021-11-02
SOUTHEAST UNIV
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  • Abstract
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  • Claims
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Problems solved by technology

[0009] Technical problem: In order to reduce the complexity of beam training under the partially connected architecture and ensure the success rate of the main path search w

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  • Multi-user millimeter wave communication beam forming method under partial connection architecture
  • Multi-user millimeter wave communication beam forming method under partial connection architecture
  • Multi-user millimeter wave communication beam forming method under partial connection architecture

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Embodiment Construction

[0092] The technical solutions of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0093] (1) if figure 1 As shown, the communication system model used in the present invention is described as follows:

[0094] (1.1) Consider a communication scenario where a base station serves K users, in which the users are all single-antenna users, and the base station adopts a partially connected hybrid beamforming architecture, equipped with N BS root antenna. this N BS The root antenna can be divided into N RF sub-arrays, each sub-array communicates with N through an RF link BS / N RF connected to the root antenna. Assuming that the system adopts a time-division duplex structure, the state information of the downlink channel can be obtained by estimating the uplink channel by using the reciprocity of the uplink and downlink channels. Let the base station perform beam training on K users separately in co...

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Abstract

The present invention provides a multi-user millimeter wave communication beam forming method under the partial connection architecture, the main path searching success rate of approximate beam scanning can be provided at the low signal-to-noise ratio, and the time complexity of beam training is remarkably reduced. Meanwhile, a multi-user beam forming method under a partial connection architecture is disclosed by designing analog beam forming and digital beam forming, narrow beams approximate to a full connection architecture can be provided for a plurality of users close to a space angle domain, and compared with a beam forming method in which one sub-array serves one user, the average sum rate of the user is improved to a certain extent.

Description

technical field [0001] The invention relates to a multi-user millimeter wave communication beamforming method under a partial connection architecture, and belongs to the technical field of millimeter wave wireless communication. Background technique [0002] Due to its rich and high-quality spectrum resources, millimeter wave communication can provide gigabit per second data transmission rate for wireless networks, and is one of the key technologies of 5G. However, the inherent high path loss of the millimeter wave band and the low diffraction ability around obstacles will have a certain impact on the system communication performance, and the large-scale multiple input and multiple output (Multiple Input and Multiple Output, MIMO) technology used in the base station includes hundreds of The antenna array of the antenna, which provides highly directional beams through beamforming technology, offers the possibility to solve the problem of high path loss in the millimeter wave ...

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Application Information

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IPC IPC(8): H04B7/0426H04B17/382H04B17/391
CPCH04B7/043H04B17/391H04B17/382
Inventor 戚晨皓董颖李朝辉
Owner SOUTHEAST UNIV
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