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Pilot distribution method and system of multi-antenna system, and electronic device

A multi-antenna system and pilot distribution technology, which is applied in diversity/multi-antenna systems, pilot signal distribution, radio transmission systems, etc., can solve problems such as pilot signal interference, achieve reasonable distribution, and reduce pilot pollution.

Active Publication Date: 2018-11-30
BEIJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the coherence time is short or the number of users in the cell is large, users in different cells use the same set of pilots, resulting in serious interference of uplink pilot signals

Method used

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  • Pilot distribution method and system of multi-antenna system, and electronic device
  • Pilot distribution method and system of multi-antenna system, and electronic device
  • Pilot distribution method and system of multi-antenna system, and electronic device

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Embodiment Construction

[0045]The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0046] Such as figure 1 as shown, figure 1 It is a schematic flowchart of a pilot allocation method for a multi-antenna system provided by an embodiment of the present invention.

[0047] S101: Determine the pilot vector of each cell in the target cell group, wherein the pilot vector includes elements 1 and 0, and element 1 at any position indicates that the pilot corresponding to the position in the preset pilot sequence is occupied , an element 0 at any pos...

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Abstract

The embodiment of the invention provides a pilot distribution method and system of a multi-antenna system, and an electronic device. A cell group to be optimized can be confirmed according to a pilotrepetition rate of cells; the interference intensity of a user is confirmed in the cell group to be optimized according to the distance from the user to a base station and the transmission power; andpilots are subdivided for users successively according to the interference intensity, thereby achieving reasonable distribution of the pilots and reducing pilot pollution.

Description

technical field [0001] The present invention relates to the technical field of wireless communication systems, in particular to a pilot frequency allocation method, system and electronic equipment of a multi-antenna system. Background technique [0002] Since the development of mobile communication, the user's service requirements are increasing day by day, which puts forward higher requirements for data transmission speed. Considering the scarcity of spectrum resources, fully improving the utilization of spectrum resources is still one of the important means to meet business needs. The spectrum utilization rate of large-scale multi-antenna technology can reach tens to hundreds of bps / Hz. As one of the core technologies of 5G, it has huge advantages in the case of increasingly scarce spectrum resources, and it is worthy of in-depth study. [0003] In a multi-antenna system, each terminal is assigned a pilot, and the base station performs channel estimation based on the pilo...

Claims

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Application Information

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IPC IPC(8): H04L5/00H04B7/0413H04B7/06
CPCH04B7/0413H04B7/0691H04L5/0023H04L5/0048H04L5/006
Inventor 徐瑨王志鑫陶小峰
Owner BEIJING UNIV OF POSTS & TELECOMM