公开(公告)号：US12047134B2

公开(公告)日：2024-07-23

申请号：US18049530

申请日：2022-10-25

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Hoi-Yoon Jung ,  Bo-Mi Lim ,  Sung-Ik Park ,  Hae-Chan Kwon ,  Sung-Jun Ahn ,  Nam-Ho Hur

IPC: H04B7/0456 ,  H03M13/25 ,  H04L1/00

CPC classification number: H04B7/0456 ,  H03M13/255 ,  H04L1/0071

Abstract: Disclosed herein are a broadcast signal transmission/reception method using multiple antennas and layered-division multiplexing and an apparatus for the same. A broadcast signal transmission apparatus includes a Multiple-Input Multiple-Output (MIMO) Bit-Interleaved Coded Modulation (BICM) unit for dividing enhanced layer data into two enhanced layer signals having different polarizations, a combination unit for generating a multiplexed signal corresponding to a first transmitting antenna by combining a core layer signal corresponding to core layer data with a first enhanced layer signal, and transmission signal generation units for generating a first transmission signal, corresponding to the multiplexed signal and transmitted through the first transmitting antenna, and a second transmission signal, corresponding to a second enhanced layer signal and transmitted through a second transmitting antenna.

公开(公告)号：US10142140B2

公开(公告)日：2018-11-27

申请号：US15421295

申请日：2017-01-31

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Joung-Il Yun ,  Sang-Woon Kwak ,  Myung-Sun Baek ,  Hae-Chan Kwon ,  Hyoung-Soo Lim ,  Nam-Ho Hur ,  Nam-Shik Kim ,  Bi-Woong Chung

IPC: H04L1/00 ,  H04L27/01 ,  H04L25/06 ,  H04L25/03 ,  H04B1/7107

Abstract: Disclosed herein are an apparatus and method for receiving a signal based on FTN. The apparatus for receiving a signal based on FTN includes an equalizer for creating a Log Likelihood Ratio (LLR) sequence by equalizing an FTN signal sequence sampled at an FTN signaling rate; a deinterleaver for deinterleaving the created LLR sequence; a decoder for decoding the LLR sequence by correcting errors in the deinterleaved LLR sequence; an interleaver for interleaving the decoded LLR sequence and providing the interleaved LLR sequence to the equalizer; and an FTN interference estimation unit for providing the FTN signal sequence, from which an FTN interference sequence is eliminated, to the equalizer, using the interleaved LLR sequence.

公开(公告)号：US11855716B2

公开(公告)日：2023-12-26

申请号：US17859969

申请日：2022-07-07

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Bo-Mi Lim ,  Hoi-Yoon Jung ,  Sung-Ik Park ,  Hae-Chan Kwon ,  Sung-Jun Ahn ,  Nam-Ho Hur ,  Hyun-Jeong Yim

IPC: H04B7/0413 ,  H04L1/00 ,  H04W4/06

CPC classification number: H04B7/0413 ,  H04L1/0071 ,  H04W4/06

Abstract: Disclosed herein are a method for transmitting a broadcast signal for signaling information about a combination of Layered-Division Multiplexing (LDM) technology and Multiple-Input Multiple-Output (MIMO) technology and an apparatus using the method. The method includes generating first signaling information indicating whether MIMO technology is applied to an enhanced layer by LDM technology, generating second signaling information indicating an MIMO application method when the MIMO technology is applied to the enhanced layer, and generating a broadcast signal using the first signaling information and the second signaling information.

公开(公告)号：US10129051B2

公开(公告)日：2018-11-13

申请号：US15659453

申请日：2017-07-25

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Sang-Woon Kwak ,  Joung-Il Yun ,  Myung-Sun Baek ,  Hae-Chan Kwon ,  Young-Su Kim ,  Hyoung-Soo Lim ,  Nam-Ho Hur

IPC: H04L25/02 ,  H04L1/00 ,  H04L25/03

Abstract: Disclosed herein are a method and apparatus for iterative interference cancellation and channel estimation in a system based on FTN communication including a pilot. Interference of a pilot symbol on a data symbol is estimated, and the estimated interference is eliminated from a sequence of data symbols. When demodulation and channel decoding are performed on the sequence of data symbols, interference between data symbols and interference of a data symbol on a pilot symbol are estimated. Such estimation is repeatedly performed, and as FTN interference is repeatedly estimated and eliminated, channel estimation performance is improved, and through the improved channel estimation performance, the reception performance of the entire system is improved.