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A Pilot Pollution Elimination Method Based on Large-Scale Array Antenna Cellular Communication System

An array antenna and pilot pollution technology, applied in the field of communication, to eliminate the problem of pilot pollution, improve performance, and increase system capacity

Active Publication Date: 2019-06-25
北京鹏鹄物宇科技发展有限公司
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Problems solved by technology

[0005] In order to overcome the deficiencies of the above methods, the present invention eliminates the problem of pilot pollution and improves the system capacity by means of two pilots and two beamforming methods

Method used

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  • A Pilot Pollution Elimination Method Based on Large-Scale Array Antenna Cellular Communication System
  • A Pilot Pollution Elimination Method Based on Large-Scale Array Antenna Cellular Communication System
  • A Pilot Pollution Elimination Method Based on Large-Scale Array Antenna Cellular Communication System

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Embodiment 1

[0037] Below, the pilot pollution elimination method based on the large-scale array antenna cellular communication system proposed by the present invention will be described in detail in conjunction with the accompanying drawings and embodiments, and the technical problems and beneficial effects solved by the present invention will also be described. It should be pointed out that the description The examples are intended to facilitate the understanding of the present invention, and do not limit it in any way.

[0038] In order to illustrate the working process and specific effects of the method of the present invention more clearly, we assume a simple network structure, in which there are 3 base stations and 3 cells, and each cell has 2 single-antenna users. For the sake of illustration, we assume that each base station has an infinite number of antennas. It should be pointed out that when the number of antennas is infinite, the system performance is optimal, but the number of...

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Abstract

A pilot pollution elimination method based on a large-scale array antenna cellular communication system eliminates pilot pollution through a two pilot-frequency and beam-forming method. Through a method of 2 pilot frequency, 2 channel information obtaining and 2 beam forming, the problem of pilot pollution is eliminated, and the problem of pilot pollution based on the large-scale array antenna cellular communication system is eliminated. And channel information from other cell users can be obtained due to secondary pilot frequency, so a system achieves base-station / cell cooperation in secondary beam forming, and then system performance is further improved.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a method for eliminating pilot pollution and inter-cell interference in a multi-cell time-division multiplexing cellular communication system using a large-scale array antenna, thereby improving system capacity. Background technique [0002] With the rapid development of information technology, people's demand for high-speed mobile communication systems is also increasing rapidly. In order to further improve system performance, Bell Labs proposed a method of applying large-scale array antennas. In a large-scale array antenna cellular communication system, each base station uses hundreds or even thousands of antennas. Through the three stages of pilot, channel information acquisition and beamforming, the base station can give each user an independent channel, thereby Let each user use all the spectrum resources, which greatly improves the system capacity. And theoretically ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L5/00H04L25/02
CPCH04B7/0452H04B7/0456H04B7/0617H04L5/0051H04L25/0228
Inventor 徐佳康
Owner 北京鹏鹄物宇科技发展有限公司
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