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Method for downlink channel estimation

A channel estimation and downlink technology, applied in fields involving

Active Publication Date: 2019-09-13
ALCATEL LUCENT SHANGHAI BELL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the present invention, this problem will be solved and an advanced pilot transmission and channel estimation technique will be proposed in order to solve the problem of downlink physical channel estimation in hybrid precoding with arbitrary RF phase-shifting network structure

Method used

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  • Method for downlink channel estimation
  • Method for downlink channel estimation
  • Method for downlink channel estimation

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Embodiment Construction

[0031] In order to better illustrate the method and device of the present invention and the user equipment and base station applied to the wireless communication network using the method according to the present invention or including the device according to the present invention, two important phenomena used in the present invention will be firstly introduced below There are technologies, respectively modulation broadband converter technology and cycle characteristic detection technology. The following is a brief introduction with reference to the accompanying drawings and related formulas.

[0032] In the following detailed description of the preferred embodiment, reference is made to the accompanying drawings which form a part hereof. The accompanying drawings show, by way of example, specific embodiments in which the invention can be practiced. The illustrated embodiments are not intended to be exhaustive of all embodiments in accordance with the invention. It is to be u...

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Abstract

The present invention relates to a method for downlink channel estimation in a base station of a Multiple-Input Multiple-Output wireless communication system, wherein a base station of the Multiple-Input Multiple-Output wireless communication system has NT antennas and NFFT sub-carriers, the method comprising: precoding a pilot signal originated from each radio frequency link by means of a first analog precoding matrix associated with the each radio frequency link to obtain a first pilot signal; and mapping the precoded first pilot signal to all antennas connected to the each radio frequency link, and transmitting the precoded first pilot signal by the antennas.

Description

technical field [0001] The present invention relates to wireless network technology, in particular, to a method for downlink channel estimation in a base station of a multiple-input multiple-output wireless communication system, a method for downlink channel estimation in a multiple-input multiple-output wireless communication system Base station for channel estimation, a method for downlink channel estimation in a user equipment of a multiple-input multiple-output wireless communication system, and a user equipment for downlink channel estimation in a multiple-input multiple-output wireless communication system . Background technique [0002] Hybrid analog / digital precoding provides a low-cost and high-efficiency solution for MIMO technology due to its excellent ability to reduce the number of RF links while achieving full beamforming / diversity gain Program. Compared to conventional purely digital precoding (where each antenna element must be equipped with a separate RF c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L25/02H04L25/03
Inventor 吴克颖武露
Owner ALCATEL LUCENT SHANGHAI BELL CO LTD