公开(公告)号：US20190386727A1

公开(公告)日：2019-12-19

申请号：US16441990

申请日：2019-06-14

Applicant: Samsung Electronics Co., Ltd. ,  POSTECH ACADEMY-INDUSTRY FOUNDATION

Inventor： Younghyun JEON ,  Namyoon LEE ,  Eunyong KIM ,  Chulhee JANG ,  Jiwook CHOI ,  Yunseo NAM

IPC: H04B7/06 ,  H04L25/02

Abstract: The disclosure relates to a pre-5th-generation (5G) or 5G communication system to be provided for supporting higher data rates beyond 4th-generation (4G) communication system such as long term evolution (LTE). An operating method of a base station in a wireless communication system is provided. The operating method includes estimating a channel for each of a plurality of terminals based on reference signals received from the plurality of the terminals, determining a beamforming vector matrix for each of the plurality of the terminals by considering scheduling and power allocation information based on the estimated channels, and transmitting data to at least one of the plurality of the terminals using the determined beamforming vector matrix.

公开(公告)号：US20200220764A1

公开(公告)日：2020-07-09

申请号：US16639711

申请日：2018-08-17

Applicant: Samsung Electronics Co., Ltd ,  Postech Academy-Industry Foundation

Inventor： Jongbu LIM ,  Namyoon LEE ,  Jiwook CHOI ,  Chanhong KIM ,  Yeohun YUN ,  Sungnam HONG

IPC: H04L27/36 ,  H04L25/03 ,  H04L27/34 ,  H04L1/06 ,  H04B7/0456

Abstract: The disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as long term evolution (LTE). According to various embodiments, a transmission device in a wireless environment may include a transceiver, and a processor operatively coupled to the transceiver. The processor may be configured to generate a codeword related to transmission data, generate symbols from the codeword by using a plurality of transmission symbol vectors determined using a linear combination of vectors corresponding to respective rows of a lattice generation matrix, and transmit a signal generated based on the symbols via the transceiver.

公开(公告)号：US20180227096A1

公开(公告)日：2018-08-09

申请号：US15891048

申请日：2018-02-07

Applicant: Samsung Electronics Co., Ltd. ,  POSTECH ACADEMY-INDUSTRY FOUNDATION

Inventor： Jongbu LIM ,  Namyoon LEE ,  Yo-Seb JEON ,  Chanhong KIM ,  Yeohun YUN ,  Sungnam HONG

IPC: H04L5/00 ,  H04W72/08

Abstract: The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates beyond 4th-generation (4G) communication system, such as long term evolution (LTE). To support multiple access, a method for operating a terminal is provided. The method includes sending at least one first reference signal over a first resource which supports orthogonal multiple access with at least one other terminal, sending at least one second reference signal over a second resource which supports non-orthogonal multiple access (NOMA) with the at least one other terminal, and sending a data signal according to the NOMA with the at least one other terminal.

公开(公告)号：US20230164002A1

公开(公告)日：2023-05-25

申请号：US17925183

申请日：2021-05-14

Applicant: Samsung Electronics Co., Ltd. ,  POSTECH RESEARCH AND BUSINESS DEVELOPMENT FOUNDATION

Inventor： Namyoon LEE ,  Hyowon LEE

IPC: H04L25/02

CPC classification number: H04L25/021 ,  H04L25/0204

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.