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A codebook, method and device for generating a precoder based on the codebook

A technology of precoder and precoding matrix, applied in diversity/multi-antenna systems, space transmit diversity, electrical components, etc., to achieve the effect of improving system performance

Active Publication Date: 2019-09-03
ALCATEL LUCENT SHANGHAI BELL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, traditional 2D codebooks and channel information feedback mechanisms only consider and support horizontal beamforming

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  • A codebook, method and device for generating a precoder based on the codebook
  • A codebook, method and device for generating a precoder based on the codebook
  • A codebook, method and device for generating a precoder based on the codebook

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Embodiment Construction

[0049] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0050]The wireless communication described in this article includes communication methods based on GSM and 3GPP protocols through wireless signals. Among them, the wireless communication network includes a communication network based on GSM and 3GPP protocols, generally, it includes a plurality of base stations, each base station provides wireless coverage of the cell where it is located, and a plurality of user equipment, each user equipment can be in a different cell or to move between. The base station includes but not limited to NodeB and eNodeB. One base station can be deployed in each cell, and each base station can include several sectors. Interfaces for transmitting user traffic or control traffic can be used between base stations to communicate with each other. A base station may communicate directly or indirectly with various user equipments. Ea...

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Abstract

The present invention provides a method and device for generating a codebook for wireless communication; and provides a method and device for generating a precoder for a 3D channel using the codebook in a base station for wireless communication; and Provided are a method and a device for assisting in generating a precoder by using the codebook in a wireless communication user equipment. Compared with the prior art, the codebook provided by the present invention can be used not only for horizontal beamforming, but also for vertical beamforming; compared with the traditional precoder, the precoder provided by the present invention can not only control the azimuth of the beam angle, and can control the downtilt angle of the beam. Compared with the prior art, the present invention utilizes the vertical space gain of the 3D channel, thereby improving the system performance.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to the field of codebook and precoder for wireless communication. Background technique [0002] In LTE systems, two-dimensional (2D) transmission has been widely studied and adopted. Traditional antenna arrays are arranged horizontally to form beams in the horizontal plane. In order to exploit more spatial gain of three-dimensional (3D) space, a 3D multiple-input multiple-output (MIMO) channel propagation model has been discussed and modeled in a recent 3GPP meeting. In 3D MIMO channel, uniform area array antenna will be adopted to obtain vertical spatial gain. However, traditional 2D codebooks and channel information feedback mechanisms only consider and support horizontal beamforming. In order to utilize the vertical space gain to improve the system performance, the codebook based on the 3D MIMO channel and the 3D precoding matrix index feedback mechanism have beco...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/06
CPCH04B7/0469H04B7/0479H04B7/0482H04B7/0639H04B7/0617H04W16/28
Inventor 李迅罗庆霖
Owner ALCATEL LUCENT SHANGHAI BELL CO LTD