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Pretreatment method and system for downstream data flow

A data flow and preprocessing technology, applied in diversity/multi-antenna systems, preventing/detecting errors through diversity reception, etc., can solve the problems of increasing the total throughput of MU-MIMO systems

Inactive Publication Date: 2013-01-02
BEIJING UNIV OF POSTS & TELECOMM
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] A technical problem to be solved by the present invention is to provide a downlink data stream preprocessing method and system, which can solve the problem that the total throughput of the MU-MIMO system does not increase with the increase of the transmit SNR in areas with high SNR

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  • Pretreatment method and system for downstream data flow
  • Pretreatment method and system for downstream data flow
  • Pretreatment method and system for downstream data flow

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Embodiment Construction

[0026] The present invention will be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the invention are illustrated. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation of the present invention.

[0027] Such as figure 1 Shown is a schematic flow chart of the first embodiment of the method of the present invention. This embodiment may include the following steps:

[0028] S101, the base station receives the feedback information sent by the mobile station and determined by the SINR on each precoding vector in each precoding matrix corresponding to the number of data streams transmitted by the base station, where the feedback information includes The number of the determined precoding matrix, the number of the precoding vector in the precoding matrix determined by the mobile station, the number of data stre...

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Abstract

The invention discloses a pretreatment method and a system for downstream data flow. The method comprises the step of receiving the feedback information of a mobile station by a base station, wherein the feedback information contains the number of data flow sent by the base station, which is wanted by the mobile station. The method further comprises the steps of confirming the number of data flowsupported by each pre-coding matrix by the base station according to the feedback information, selecting a target mobile station according to the number of data flow supported by each pre-coding matrix, confirming the code modulating scheme of the target mobile station by the base station, and pre-treating the downstream data flow sent to the target mobile station by utilizing the code modulatingscheme of the target mobile station according to the number of the pre-coding matrix confirmed by the target mobile station, the number of the pre-coding vector in the pre-coding matrix confirmed by the target mobile station and the number of the data flow supported by the pre-coding matrix confirmed by the target mobile station. In high signal noise ratio areas, the method and the system of the invention can realize an SU-MIMO sending model in an MU-MIMO system, and the overall throughput of the system is efficiently promoted.

Description

technical field [0001] The present invention relates to a MIMO (Multi Input Multi Output, multiple input multiple output) wireless communication system, and more specifically, to a method and system for preprocessing a downlink data stream. Background technique [0002] By disposing multiple antennas in the base station and mobile station, the capacity and reliability of the wireless communication link can be greatly improved. Space-division multiplexing creates multiple spatial data pipes on the same frequency band without adding extra power, increasing spectral efficiency. When the base station sends multiple data streams occupying the same time and frequency resources to the same user, it is called SU-MIMO (Single User MIMO, single user MIMO), or SDM (Space Division Multiplexing, space division multiplexing). When the base station sends multiple data streams occupying the same time and frequency resources to different users, it is called MU-MIMO (Multiple User MIMO, mult...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/02H04L1/06
Inventor 王莹张平孙锴王坦凌丽莎石聪
Owner BEIJING UNIV OF POSTS & TELECOMM