Interference eliminating method combining base station and user association

A technology of interference cancellation and joint base station, applied in the field of communication, to achieve the effect of increasing the reachable degree of freedom, expanding the scope of application, and improving the reachable degree of freedom

Active Publication Date: 2016-08-10
XIDIAN UNIV
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However, this scheme is only suitable for scenarios where ther

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  • Interference eliminating method combining base station and user association
  • Interference eliminating method combining base station and user association
  • Interference eliminating method combining base station and user association

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[0036] The technical solutions and effects of the present invention will be described in further detail below with reference to the accompanying drawings.

[0037] Reference figure 1 , The implementation steps of the present invention are as follows:

[0038] Step 1. Set up the system model

[0039] Reference figure 2 The system model set by the present invention is a multi-cell MIMO multiple access uplink network, which includes G base stations and J users. There is a backhaul link between the base station and the base station. After the base station receives the signal of the cell It can be transmitted to other base stations through the backhaul link. The association between the base station and the user is not fixed. The number of antennas for each base station and user is M, and the data stream sent by each user is d, d∈{1, 2,...M}, the kth base station receives N k The data stream sent by each user, and the j-th user who sent the data stream to the base station k is denoted a...

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Abstract

The invention discloses an interference eliminating method combining base station and user association, and the method mainly solves the problem that conventional interference elimination technology only solves the freedom degree problem of a system with fixed base station and user association. The method includes the steps of setting a system model, converting a system freedom degree maximization problem into an optimization model and solving the optimization model, determining the optimal base station and user association relation and maximal freedom degree according to the optimization model, and conducting interference elimination at the base station terminal when the base station and user association relation is optimal. The application scope is wide, the maximal possible freedom degree is improved, and interference is effectively eliminated. Association between the base station and users is any multi-cell MIMO multiple-access uplink network.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to an interference elimination method, which can be used in a multi-cell MIMO multiple access uplink network where the association between a base station and a user is arbitrary. Background technique [0002] In a multi-cell MIMO wireless network, as the number of users and user demands continue to increase, the interference from other cells between the base station and users during data transmission will also increase, which seriously affects the quality of communication. Therefore, an effective interference elimination scheme becomes extremely important. In order to achieve interference elimination to a great extent, an extremely effective method is to perform interference alignment before interference elimination. Through alignment, the interference is compressed into a small-dimensional space, and then interference elimination is performed on this small-dimensi...

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Application Information

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IPC IPC(8): H04J11/00
CPCH04J11/0026
Inventor 刘伟蔡静李建东黄鹏宇刘勤
Owner XIDIAN UNIV
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