MIMO system channel estimation method and device in 60GHz indoor scene

A channel estimation and indoor scene technology, applied in the field of MIMO system channel estimation, can solve the problems of high overhead of orthogonal pilot resources and pilot pollution, etc., and achieve the effect of reducing pilot pollution, reducing dimensions, and reducing training and feedback overhead

Active Publication Date: 2016-05-11
TSINGHUA UNIV +1
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Problems solved by technology

[0006] Aiming at the defects of the prior art, the present invention proposes a channel estimation method and device for a MIMO system in a 60 GHz indoor scene to solve the pilot pollution existing in the uplink channel estimation of a MIMO system in a 60 GHz indoor scene to solve the above technical problems and downlink channel estimation have the problem of huge overhead of orthogonal pilot resources

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  • MIMO system channel estimation method and device in 60GHz indoor scene
  • MIMO system channel estimation method and device in 60GHz indoor scene
  • MIMO system channel estimation method and device in 60GHz indoor scene

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[0040] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0041] The channel estimation method of MIMO system in 60GHz indoor scene provided by the present invention, according to the characteristics of two-dimensional large-scale antenna array, proposes a two-dimensional orthogonal basis expansion model in channel space, and performs two-dimensional discrete Fourier transform on the uplink initial estimated channel ( Two-dimensionDiscreteFourierTransform, 2D-DFT) to obtain the spatial pattern (SpatialPattern) points in the spatial domain, where the grid points after the 2D-DFT of the channel corresponding to each path correspond to a SpatialPattern; according to the sparse characteristics of the spatial domain, in the spatial dom...

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Abstract

The invention provides an MIMO system channel estimation method and device in a 60GHz indoor scene, and relates to the field of communications. The method comprises the following steps: obtaining a first channel estimation value of each user equipment; carrying out two-dimensional discrete Fourier transform on the first channel estimation value to obtain a spatial pattern point set; grouping all user equipment according to the spatial pattern point set, using the same pilot frequency on the same group of users, and obtaining a second channel estimation value of each user equipment in each group to realize the MIMO system channel estimation in the 60GHz indoor scene. According to the MIMO system channel estimation method in the 60GHz indoor scene provided by the invention, the discrete Fourier transform is used as a spatial basis expansion model of orthogonal basis to parameterize a user equipment channel, thereby reducing the dimensionality of an unknown channel parameter, reducing training and feedback costs and easing pilot frequency pollution.

Description

technical field [0001] The present invention relates to the communication field, in particular to a channel estimation method and device for a MIMO system in a 60GHz indoor scene. Background technique [0002] In order to adapt to the rapid increase in the amount of transmitted data, the fourth generation mobile communication (FourthGeneration, 4G) system uses many technologies to increase the data transmission rate, such as carrier aggregation, multiple-input multiple-output antenna system (Multiple-Input Multiple-Output, MIMO) Wait. However, with the demand for higher-quality communication, the 4G system can no longer provide exponentially increasing data volume. Therefore, new spectrum access and air interface design are key technologies to be considered in the fifth generation of mobile communication (FifthGeneration, 5G). [0003] The millimeter-wave frequency band (30GHz-300GHz) can provide a bandwidth greater than 1GHz (60GHz can provide a bandwidth of 5-7GHz), which...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L25/02G06F17/14
CPCG06F17/141H04L25/0204H04L25/024
Inventor 高飞飞范典王公仆钟章队
Owner TSINGHUA UNIV
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