公开(公告)号：US20240402299A1

公开(公告)日：2024-12-05

申请号：US18595578

申请日：2024-03-05

Applicant: KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION

Inventor： Nam Yoon LEE ,  Geon CHOI

IPC: G01S7/41 ,  G01S13/06

Abstract: The present disclosure provides a state estimation apparatus of estimating a current state of an object based on state information and observation information for dynamically replicating the object, the state estimation apparatus including an input unit that receives the observation information, and a current state estimation unit that generates current state estimation information through the observation information, wherein the current state estimation unit includes a prediction information generation unit that generates state prediction information through inputting past state estimation information obtained by delaying the current state estimation information by one time unit into a previously prepared state prediction model, and a prediction information correction unit that calculates a Kalman gain matrix associated with a degree of correction of the state prediction information through artificial neural network(s), and corrects the state prediction information through the observation information and the Kalman gain matrix to generate the current state estimation information.

公开(公告)号：US20240421863A1

公开(公告)日：2024-12-19

申请号：US18747946

申请日：2024-06-19

Applicant: KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION

Inventor： Nam Yoon LEE ,  Deokhwan HAN

IPC: H04B7/0413 ,  H04L5/00 ,  H04W72/1273 ,  H04W72/21 ,  H04W72/54

Abstract: A method of reconstructing a downlink (DL) channel by a base station in a multiple-input-multiple-output (MIMO) communication system includes: estimating UL channel information on the basis of an uplink (UL) pilot signal received from a user equipment; extracting at least one key parameter among common parameters of the UL channel and the DL channel from the estimated UL channel information; estimating DL channel information using the UL channel information and the at least one key parameter; and reconstructing the DL channel by correcting an error between the estimated DL channel information and actual DL channel information.

公开(公告)号：US20240267079A1

公开(公告)日：2024-08-08

申请号：US18392259

申请日：2023-12-21

Applicant: KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION

Inventor： Nam Yoon LEE ,  Hyowon LEE

IPC: H04B1/525 ,  H04B17/345 ,  H04L5/14

CPC classification number: H04B1/525 ,  H04B17/345 ,  H04L5/1461

Abstract: A reception signal processing device for cancelling a self-interference signal generated by a transmission signal of a transceiver includes: a reception unit for receiving a reception signal including a self-interference signal; a moment generation unit for generating a moment of the reception signal; an orthogonal polynomial generation unit for generating an orthogonal polynomial by calculating orthogonal polynomial coefficients from the moment; and a digital interference cancelling unit for cancelling the self-interference signal included in the reception signal using the orthogonal polynomial.