USER DETECTION TECHNIQUE, AND METHOD AND APPARATUS FOR CHANNEL ESTIMATION IN WIRELESS COMMUNICATION SYSTEM SUPPORTING MASSIVE MULTIPLE-INPUT MULTIPLE-OUTPUT

Title:

USER DETECTION TECHNIQUE, AND METHOD AND APPARATUS FOR CHANNEL ESTIMATION IN WIRELESS COMMUNICATION SYSTEM SUPPORTING MASSIVE MULTIPLE-INPUT MULTIPLE-OUTPUT

Document Type and Number:

WIPO Patent Application WO/2021/230709

Kind Code:

A1

Abstract:

Disclosed are a user detection technique, and a method and apparatus for channel estimation in a wireless communication system supporting massive multiple-input multiple-output. The method comprises the steps of: receiving a superimposed signal including a transmission signal of at least one user equipment (UE) from among a plurality of user equipments, wherein each transmission signal includes a pilot signal of a corresponding user equipment; calculating a sample covariance matrix from the received superimposed signal by using the number of antennas of a base station and a pilot signal matrix of the at least one user equipment; calculating a likelihood function indicating the likelihood probability of the received superimposed signal, on the basis of the number of antennas of the base station and the received superimposed signal; detecting a user index set indicating whether or not the plurality of user equipments have transmitted signals, by using the calculated likelihood function and sample covariance matrix; and performing channel estimation of the at least one user equipment that is transmitting the signal, on the basis of the detected user index set.

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Inventors:

LEE NAMYOON (KR)
LEE HYOWON (KR)

Application Number:

PCT/KR2021/006078

Publication Date:

November 18, 2021

Filing Date:

May 14, 2021

Export Citation:

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Assignee:

SAMSUNG ELECTRONICS CO LTD (KR)
POSTECH RES & BUSINESS DEV FOUND (KR)

International Classes:

H04L25/02; H04B7/0413; H04L1/00; H04L5/00

Domestic Patent References:

WO2017086753A1

2017-05-26

Foreign References:

KR20090003185A	2009-01-09
KR101606159B1	2016-03-25
KR20080009332A	2008-01-28
KR20140104903A	2014-08-29

Attorney, Agent or Firm:

LEE, Keon-Joo et al. (KR)

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