TDD large-scale MIMO system pilot frequency allocation method based on alliance game

An allocation method and a technology for system pilot frequency, which are applied in the field of mobile communication and can solve problems such as large gaps

Active Publication Date: 2017-11-24
ANHUI UNIVERSITY
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Problems solved by technology

[0006] The purpose of the present invention is to solve the defect that the analysis scene of the pilot allocation method in the prior art is quite different from the actual application scene, and to provide a TDD massive MIMO system pilot allocation method based on alliance game to solve the above problems

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  • TDD large-scale MIMO system pilot frequency allocation method based on alliance game
  • TDD large-scale MIMO system pilot frequency allocation method based on alliance game
  • TDD large-scale MIMO system pilot frequency allocation method based on alliance game

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Embodiment Construction

[0062] In order to have a further understanding and understanding of the structural features of the present invention and the achieved effects, the preferred embodiments and accompanying drawings are used for a detailed description, as follows:

[0063] Such as figure 1 As shown, a kind of alliance game-based TDD massive MIMO system pilot allocation method described in the present invention comprises the following steps:

[0064] The first step is user data preprocessing. Considering the uplink of a massive MIMO system, all users are numbered in turn, and each base station obtains the distance information from all users to itself, and transmits the distance information to the base station controller. The specific steps are as follows:

[0065] (1) if figure 2 As shown, combined with the TDD massive MIMO system model diagram, it can be seen that each cell is also equipped with a base station, assuming that the number of cells is L, each base station is equipped with M anten...

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Abstract

The invention relates to a TDD large-scale MIMO system pilot frequency allocation method based on alliance game. Compared with the prior art, the TDD large-scale MIMO system pilot frequency allocation method has the advantages of solving the defect of relatively large difference between an analysis scene and an actual application scene in the pilot frequency allocation method. The TDD large-scale MIMO system pilot frequency allocation method comprises the following steps: preprocessing user data; establishing a sub-alliance structure; and obtaining a pilot frequency allocation result. The idea of alliance game is imported into the pilot frequency allocation based on user grouping, which is not only suitable for the scenes in which the cell shape is not regular and the number of users in each cell (the users are randomly distributed), but also can effectively relieve the pilot frequency pollution effect, and can relieve the problem that the existing method for solving the pilot frequency pollution effect is hard to be actually used.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a pilot allocation method for a TDD massive MIMO system based on alliance game. Background technique [0002] Massive MIMO is one of the key technologies of 5G mobile communication. It means that the base station is equipped with a large number of antennas. The number of antennas is usually dozens, hundreds or even thousands, which is 1-2 orders of magnitude or more than the number of antennas in the existing MIMO system. . In addition to greatly improving the system spectrum efficiency and energy efficiency, massive MIMO can also obtain the benefits of very accurate spatial discrimination and relatively cheap hardware implementation. [0003] There is a key assumption in obtaining the excellent performance of massive MIMO, that is, the transceiver needs to obtain reliable channel state information. Existing studies have shown that for TDD massive MIMO channel esti...

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Application Information

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IPC IPC(8): H04L5/00H04B7/0413
CPCH04B7/0413H04L5/0048
Inventor 智慧胡艳军
Owner ANHUI UNIVERSITY
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