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Method, device and system for providing and obtaining pre-encoding matrix of shaped beam

A precoding matrix and beamforming technology, applied in diversity/multi-antenna system, space transmit diversity, error prevention/detection through diversity reception, etc., can solve the problems of large data volume and many channel resources, etc.

Active Publication Date: 2013-09-11
新岸线(北京)科技集团有限公司
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  • Abstract
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Problems solved by technology

[0004] In view of this, an object of the present invention is to provide a method, device and system for providing and obtaining a beamforming precoding matrix, to solve the problem of obtaining and transmitting a precoding matrix in the prior art with a large amount of data and occupying a large amount of channel resources. The problem

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  • Method, device and system for providing and obtaining pre-encoding matrix of shaped beam

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Embodiment Construction

[0072] The following description and drawings illustrate specific embodiments of the invention sufficiently to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples merely represent possible variations. Individual components and functions are optional unless explicitly required, and the order of operations may vary. Portions and features of some embodiments may be included in or substituted for those of other embodiments. The scope of embodiments of the present invention includes the full scope of the claims, and all available equivalents of the claims. These embodiments of the present invention may be referred to herein, individually or collectively, by the term "invention", which is for convenience only and is not intended to automatically limit the application if in fact more than one invention is disclosed The scope is any individual invention or inventive concept.

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Abstract

The invention discloses a method, device and system for providing and obtaining a pre-encoding matrix of a shaped beam. The method comprises a step of carrying out channel estimation when a detecting pilot signal sent by a central access point is received and obtaining a multipath channel gain matrix H, a step of carrying out matrix SVD on the matrix H by adopting a set matrix decomposition method to obtain the pre-encoding matrix V meeting the preset conditions, wherein the matrix V meeting the preset conditions is a matrix V with the selected part elements same or conjugated, the other part elements same or the real part symbols contrary, and a step of extracting one element from the selected part elements, extracting one element from the other part elements, packaging the extracted elements in a matrix V data package and providing the extracted elements for the central access point. The amount of transmitted information is reduced, the occupied system resources are reduced, and the performance of the system is improved.

Description

technical field [0001] The present invention belongs to the technical field of wireless communication, and in particular relates to a method, device and system for providing and obtaining a beamforming precoding matrix applicable to a Multiple-Input Multiple-Output (MIMO) system. Background technique [0002] In the NUHT closed-loop MIMO system, precoding needs to be performed at the central access point (Central Access Point, CAP). Value Decomposition (SVD) brings computational pressure and increases the available scheduling time of CAP. The operation of SVD decomposition to obtain the beamforming precoding matrix V is generally completed on the station (Station, STA) side. [0003] In the prior art, when obtaining the precoding matrix V, the CAP usually sends a sounding pilot signal to the STA. After receiving the sounding pilot, the STA estimates the channel, obtains the multipath channel gain matrix H, and performs multipath Perform SVD decomposition on the gain matrix ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/04H04L1/06
Inventor 尹宝林
Owner 新岸线(北京)科技集团有限公司
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