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Method and device for eliminating inter-user interference through large-scale MIMO in HetNet network

A large-scale technology to eliminate interference, applied in the field of communication, can solve the problem of co-channel interference reducing the overall throughput of the system

Inactive Publication Date: 2018-06-05
CHINA TELECOM CORP LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the existence of low-power nodes, a large amount of co-channel interference will be generated and the overall throughput of the system will be reduced

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  • Method and device for eliminating inter-user interference through large-scale MIMO in HetNet network
  • Method and device for eliminating inter-user interference through large-scale MIMO in HetNet network
  • Method and device for eliminating inter-user interference through large-scale MIMO in HetNet network

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Embodiment Construction

[0047] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0048] The relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

[0049] At the same time, it should be understood that, for the convenience of d...

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Abstract

The invention discloses a method and a device for eliminating inter-user interference through large-scale MIMO in a HetNet network and relates to the field of communication, wherein channel information of a self-service user and channel information of a self-interference user are obtained through channel estimation; a zero-space matrix of an interference user is generated by utilizing the channelinformation of the self-interference user; an equivalent pre-coding channel is determined by utilizing the channel information of the self-service user and the zero-space matrix of the interference user; the equivalent pre-coding channel of each group of users is pre-coded so as to obtain a corresponding intra-group user precoding matrix; an interference elimination pre-coding matrix is formed byutilizing the zero-space matrix of the interference user and the intra-group user pre-coding matrix; and baseband data are processed by using the interference elimination pre-coding matrix to obtain abaseband signal for transmission. According to the method and the device in the invention, a zero space is used for constructing a pre-coding matrix for eliminating interference between different nodes, so that interference elimination is effectively realized, and channel utilization rate is improved.

Description

technical field [0001] The invention relates to the communication field, in particular to a method and device for eliminating interference between users by using massive MIMO in a HetNet network. Background technique [0002] HetNet (Heterogeneous Network, heterogeneous network) is the industry's most valuable solution to capacity congestion problems. HetNet networks increase system capacity by deploying multi-layer networks and nodes with different service radii and transmission power. The most typical There are macrocells, microcells, and femtocells. The form of HetNet network will become the development trend of mobile access network. [0003] In wireless communication systems, massive MIMO (Massive MIMO) technology can greatly improve system throughput, and can use linear precoding technology to eliminate interference between unicast users to achieve multi-user MIMO (MU-MIMO), and further increase System flexibility and channel utilization. Because massive MIMO techno...

Claims

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Application Information

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IPC IPC(8): H04B7/0413H04B7/0456H04B7/06
CPCH04B7/0413H04B7/0456H04B7/0626
Inventor 齐飞
Owner CHINA TELECOM CORP LTD
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