Inter-group interference resisting method and device based on signal to interference plus noise power ratio constraints

A technology of signal-to-interference-to-noise ratio and inter-group interference, applied in the field of anti-inter-group interference methods and devices based on signal-to-interference-to-noise ratio constraints, can solve problems such as interference, improve the total rate, eliminate intra-group interference and inter-group interference interference effect

Active Publication Date: 2019-11-12
NANJING UNIV OF POSTS & TELECOMM
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem solved by the present invention is how to solve the problems of intra-group interference and inter-user interference in user groups when performing two-stage precoding design, and improve the overall system rate.

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  • Inter-group interference resisting method and device based on signal to interference plus noise power ratio constraints
  • Inter-group interference resisting method and device based on signal to interference plus noise power ratio constraints
  • Inter-group interference resisting method and device based on signal to interference plus noise power ratio constraints

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Embodiment Construction

[0038] The technical solutions in the embodiments of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the application. Obviously, the described embodiments are only a part of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative work, all belong to the scope of protection of this application. The relevant directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship between the components in a certain posture (as shown in the drawings). Sports conditions, etc., if the specific posture changes, the directional indication will also change accordingly.

[0039] As mentioned in the background technology, in the prior art, when the joint space division m...

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Abstract

The invention discloses an inter-group interference resisting method and an inter-group interference resisting device based on signal to interference plus noise power ratio constraints. The method comprises the following steps: constructing a large-scale MIMO frequency division duplex downlink system based on channel statistics; performing user group division on a user terminal based on the approximation of the geographic positions; forming a first-stage precoding matrix by selecting characteristic beams and decomposing characteristic values according to long-term statistical characteristics;and forming a second-stage pre-coding matrix based on the first-stage pre-coding matrix and the signal to interference plus noise ratio constraint. According to the scheme, when two-stage precoding design is carried out, the problems of intra-group interference and inter-user-group interference existing in the user groups can be solved. The total rate of the system is improved.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to a method and device for resisting intergroup interference based on SINR constraints. Background technique [0002] Massive Multiple-Input Multiple-Output (MIMO) is considered very likely to become one of the main transmission technologies of 5G systems, and has received keen attention from academia and industry. Most of the existing mobile communication systems adopt the frequency-division duplexing (Frequency-Division Duplexing, FDD,) working mode. In the frequency division duplex multiplexing mode, the time-frequency resources required for uplink and downlink channel estimation are related to the number of base station antennas. If the large-scale MIMO system works in the frequency division duplex multiplexing mode, then the Realizing channel estimation using uplink and downlink resources much larger than traditional MIMO systems will occupy a large amount of...

Claims

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Application Information

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IPC IPC(8): H04B7/0413H04B7/0456H04B7/0408H04B17/336H04L25/03
CPCH04B7/0413H04B7/0456H04B7/0408H04B17/336H04L25/03159
Inventor黄学军倪鑫鑫黄秋实
OwnerNANJING UNIV OF POSTS & TELECOMM