-
公开(公告)号：US20250141488A1
公开(公告)日：2025-05-01
申请号：US18391497
申请日：2023-12-20
Applicant: Samsung Electronics Co., Ltd.
Inventor： Mouna Hajir , Mojtaba Rahmati , Hyuk Joon Kwon
Abstract: A system includes: a first transmitter to transmit a first signal; a second transmitter to transmit a second signal; a receiver to receive a downlink signal, the downlink signal including a desired signal and an interference signal corresponding to the first and second signals; a processor; and memory including instructions that, when executed by the processor, cause the processor to: select an interference function based on center frequencies of the first and second transmitters and the receiver; calculate correlation values based on a first delay between the receiver and a reference transmitter, and a second delay between the first and second transmitters; select one or more filter taps based on the calculated correlation values; estimate the interference signal based on the selected one or more filter taps and the interference function; determine the desired signal from the downlink signal according to the estimated interference signal; and transmit the desired signal.
-
公开(公告)号：US11741577B2
公开(公告)日：2023-08-29
申请号：US17244504
申请日：2021-04-29
Applicant: Samsung Electronics Co., Ltd.
Inventor： Mojtaba Rahmati , Dongwoon Bai , Jungwon Lee
CPC classification number: G06T5/002 , G06T5/50 , G06T2207/20012
Abstract: A method and system are provided. The method includes determining a difference map between a reference frame and a non-reference frame, determining a local variance of the reference frame, determining a detail power map based on a difference between the determined local variance and the determined difference map, and determining a detail grade map based on the determined detail power map.
-
公开(公告)号：US10181967B2
公开(公告)日：2019-01-15
申请号：US15630459
申请日：2017-06-22
Applicant: Samsung Electronics Co., Ltd.
Inventor： Mojtaba Rahmati , Dongwoon Bai , Jungwon Lee
IPC: H04L1/00 , H04L25/02 , H04L27/38 , H04B7/0413
Abstract: Methods and apparatus for soft MIMO detection of high order QAM with initial candidate reduction are described. A method includes receiving a plurality of signals including Q-order quadrature amplitude modulation (QAM) symbols; determining, based on linear minimum mean square error (MMSE) estimation using detection of I and Q signs around a target layer, a reduced candidate set including C potential candidates, where C is less than Q; calculating Euclidean distances (EDs) based on the reduced candidate set; and generating log-likelihood ratio (LLR) information based on the calculated EDs.
-
公开(公告)号：US11710221B2
公开(公告)日：2023-07-25
申请号：US17559593
申请日：2021-12-22
Applicant: Samsung Electronics Co., Ltd.
Inventor： Mojtaba Rahmati , Dongwoon Bai , Jungwon Lee
CPC classification number: G06T5/20 , G06T5/002 , G06T5/50 , G06T7/337 , G06T2207/20224
Abstract: An apparatus and method for successive multi-frame image denoising are herein disclosed. The apparatus includes a first subtractor including a first input to receive a frame of the image, a second input to receive a reference frame, and an output; an absolute value function block including an input connected to the output of the first subtractor and an output; a second subtractor including a first input connected to the output of the absolute value function block, a second input for receiving a first predetermined value, and an output; and a maximum value divider function block including an input connected to the output of the second subtractor and an output for outputting filter weights.
-
公开(公告)号：US10200999B2
公开(公告)日：2019-02-05
申请号：US15144398
申请日：2016-05-02
Applicant: Samsung Electronics Co., Ltd.
Inventor： Mojtaba Rahmati , Dongwoon Bai , Jungwon Lee
Abstract: A method and an apparatus. The method includes receiving a signal including a serving signal and an interference signal; applying a Gaussian approximation (GA) on the serving signal and the interference signal; determining, jointly, a maximum likelihood (ML) solution of rank, traffic to pilot ratio (TPR), and precoding matrix index on the GA-applied serving signal and the GA-applied interference signal. The apparatus includes an antenna for receiving a signal including a serving signal and an interference signal; a processor configured to apply a GA on the serving signal and the interference signal, and determine, jointly, an ML solution of rank, TPR, and precoding matrix index on the GA-applied serving signal and the GA-applied interference signal.
-
Patent Agency Ranking
公开(公告)号：US09716601B2
公开(公告)日：2017-07-25
申请号：US14987392
申请日：2016-01-04
Applicant: Samsung Electronics Co., Ltd.
Inventor： Mojtaba Rahmati , Dongwoon Bai , Jungwon Lee
CPC classification number: H04L25/0256 , H04B7/0413 , H04L1/0048 , H04L1/0054 , H04L27/38
Abstract: Methods and apparatus for soft MIMO detection of high order QAM with initial candidate reduction are described. A method includes receiving a plurality of signals including Q-order QAM symbols; determining a reduced candidate set including C potential candidates, where C is less than Q; calculating Euclidean distances (EDs) based on the reduced candidate set; and generating LLR information based on the calculated EDs.
-
公开(公告)号：US12086961B2
公开(公告)日：2024-09-10
申请号：US17244481
申请日：2021-04-29
Applicant: Samsung Electronics Co., Ltd.
Inventor： Mojtaba Rahmati , Dongwoon Bai , Jungwon Lee
CPC classification number: G06T5/70 , H04N25/60 , G06T2207/20024 , G06T2207/20221
Abstract: A method and system are provided. The method includes receiving an input frame, performing high frequency noise reduction (HFNR) on the received input frame, performing low frequency noise reduction (LFNR) on the received input frame, and obtaining a hybrid denoised clean frame by fusing an output of the performed HFNR and an output of the performed LFNR.
-
公开(公告)号：US11855720B2
公开(公告)日：2023-12-26
申请号：US17840581
申请日：2022-06-14
Applicant: Samsung Electronics Co., Ltd.
Inventor： Mouna Hajir , Mojtaba Rahmati , Hyukjoon Kwon
IPC: H04B7/0456 , H04B7/01 , H04L27/26 , H04B17/336 , H04L1/00
CPC classification number: H04B7/0486 , H04B7/01 , H04B17/336 , H04L1/0003 , H04L27/2605
Abstract: A system and a method are disclosed for normalizing Log-Likelihood Ratios for bits of a transport block. For a narrowband channel estimation (NBCE), a normalization factor is selected based on an estimated delay spread, a cyclic prefix, an estimated Doppler spread, a rank, a modulation and coding scheme (MCS) and a signal-to-noise ratio (SNR) for the transport block, and an input LLRin for the individual bits of the transport block are scaled to respectively form an output LLRout for the individual bits of the transport block using the normalization factor. For a wideband channel estimation, a normalization factor is selected based on the rank/MCS/SNR of the transport block, and the input LLRin for the individual bits of the transport block are scaled to respectively form the output LLRout for the individual bits of the transport block using the normalization factor.
-
公开(公告)号：US11216923B2
公开(公告)日：2022-01-04
申请号：US16380473
申请日：2019-04-10
Applicant: Samsung Electronics Co., Ltd.
Inventor： Mojtaba Rahmati , Dongwoon Bai , Jungwon Lee
Abstract: An apparatus and method for successive multi-frame image denoising are herein disclosed. According to one embodiment, an apparatus includes a Wiener filter configured to filter a frame of an image; and a frame delayer configured to feedback the filtered frame to the Wiener filter, wherein the Wiener filter is further configured to filter a subsequent frame of the image based on the filtered frame.
-
10.发明授权公开(公告)号：US09509381B1
公开(公告)日：2016-11-29
申请号：US14957309
申请日：2015-12-02
Applicant: Samsung Electronics Co., Ltd.
Inventor： Hyukjoon Kwon , Mojtaba Rahmati , Jungwon Lee
CPC classification number: H04B7/0413 , H04B17/345 , H04L25/0202
Abstract: A method is provided. The method includes receiving a signal, wherein the signal includes a serving signal and an interference signal; removing the serving signal from the received signal to provide a residual signal; equalizing the residual signal based on linear estimation; determining a sample sum of the equalized signal; determining a plurality of eigenvalues from the sample sum; and estimating a transmission rank of the interference signal using hypothesis testing based on the plurality of eigenvalues.
Abstract translation: 提供了一种方法。 该方法包括接收信号，其中信号包括服务信号和干扰信号; 从接收信号中去除服务信号以提供残余信号; 基于线性估计来平衡残留信号; 确定均衡信号的采样和; 从样本和确定多个特征值; 以及使用基于所述多个特征值的假设检验来估计所述干扰信号的发送等级。
-
-
-
-
-
-
-
-
-
Search Results
14
records
(took 0.035 seconds)
