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Pilot allocation method for tdd massive mimo system 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: 2019-08-13
ANHUI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

Method used

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  • Pilot allocation method for tdd massive mimo system based on alliance game
  • Pilot allocation method for tdd massive mimo system based on alliance game
  • Pilot allocation method for tdd massive mimo system 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 pilot allocation method for a TDD large-scale MIMO system based on an alliance game, and solves the defect that the analysis scene of the pilot allocation method has a large gap with the actual application scene compared with the prior art. The invention includes the following steps: preprocessing of user data; establishment of sub-alliance structure; acquisition of pilot allocation results. The present invention introduces the idea of ​​alliance game into pilot allocation based on user grouping, which is applicable to scenarios where the cell shape is irregular and the number of users in each cell is not fixed (users are randomly distributed), and can effectively reduce pilot pollution. It alleviates the problem that the existing method for solving the effect of pilot pollution is difficult to be practically applied.

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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L5/00H04B7/0413
CPCH04B7/0413H04L5/0048
Inventor 智慧胡艳军
Owner ANHUI UNIVERSITY
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