公开(公告)号：US20220077959A1

公开(公告)日：2022-03-10

申请号：US17527013

申请日：2021-11-15

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Sun-Hyoung KWON ,  Jae-Young LEE ,  Sung-Ik PARK ,  Bo-Mi LIM ,  Heung-Mook KIM ,  Jin-Hyuk SONG

IPC: H04L1/00 ,  H04L27/26 ,  H04L27/34 ,  H04L5/00 ,  H04W72/00

Abstract: An apparatus for generating broadcast signal frame according to an embodiment of the present invention includes a combiner configured to generate a multiplexed signal by combining a core layer signal and an enhanced layer signal at different power levels; a power normalizer configured to reduce the power of the multiplexed signal to a power level corresponding to the core layer signal; a time interleaver configured to generate a time-interleaved signal by performing interleaving that is applied to both the core layer signal and the enhanced layer signal; and a frame builder configured to generate a broadcast signal frame including a preamble for signaling time interleaver information corresponding to the time interleaver, the time interleaver uses one of time interleaver groups, and a boundary between the time interleaver groups is a boundary between Physical Layer Pipes (PLPs) of a core layer corresponding to the core layer signal.

公开(公告)号：US20210211336A1

公开(公告)日：2021-07-08

申请号：US16866007

申请日：2020-05-04

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Kwan-Woong RYU ,  Jin-Hyuk SONG ,  Joon-Young JUNG ,  Dong-Joon CHOI

IPC: H04L27/00 ,  H04L25/02 ,  H04L27/26

Abstract: Disclosed herein are a synchronization apparatus and method for a upstream system. The synchronization apparatus for a upstream system includes one or more processors, and execution memory for storing at least one program that is executed by the one or more processors, wherein the at least one program is configured to receive a signal and calculate a first channel estimation value for the received signal using a predefined pilot, and calculate a second channel estimation value using a predefined complementary pilot and the first channel estimation value.

公开(公告)号：US20210110238A1

公开(公告)日：2021-04-15

申请号：US16869981

申请日：2020-05-08

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Myung-Sun BAEK ,  Jin-Hyuk SONG ,  Byung-Jun BAE ,  Dong-Joon CHOI

IPC: G06N3/04 ,  G06N3/08 ,  G06N20/00 ,  H04L27/00 ,  H04L12/18

Abstract: Disclosed herein are an apparatus and method for detecting a broadcast signal. The apparatus includes a bootstrap detection unit for detecting whether a bootstrap signal is included in a received broadcast signal based on a preset first bootstrap window and a machine-learning method, a bootstrap offset estimation unit for searching the broadcast signal for the start point of the bootstrap signal using a preset second bootstrap window, estimating a bootstrap offset based on the machine-learning method, and estimating bootstrap symbols from the bootstrap offset, and a demodulation unit for demodulating information included in the broadcast signal from the bootstrap symbols based on the machine-learning method.

公开(公告)号：US20170294987A1

公开(公告)日：2017-10-12

申请号：US15532065

申请日：2016-03-25

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Sun-Hyoung KWON ,  Jae-Young LEE ,  Sung-Ik PARK ,  Bo-Mi LIM ,  Heung-Mook KIM ,  Jin-Hyuk SONG

IPC: H04L1/00 ,  H04W72/00 ,  H04L5/00 ,  H04L27/26

CPC classification number: H04L1/0071 ,  H04L1/00 ,  H04L1/0058 ,  H04L1/007 ,  H04L5/0053 ,  H04L27/26 ,  H04L27/2602 ,  H04L27/3488 ,  H04L2001/0093 ,  H04W72/005 ,  Y02D70/00

Abstract: An apparatus and method for broadcast signal frame using a boundary between Physical Layer Pipes (PLPs) of a core layer are disclosed. An apparatus for generating broadcast signal frame according to an embodiment of the present invention includes a combiner configured to generate a multiplexed signal by combining a core layer signal and an enhanced layer signal at different power levels; a power normalizer configured to reduce the power of the multiplexed signal to a power level corresponding to the core layer signal; a time interleaver configured to generate a time-interleaved signal by performing interleaving that is applied to both the core layer signal and the enhanced layer signal; and a frame builder configured to generate a broadcast signal frame including a preamble for signaling time interleaver information corresponding to the time interleaver, the time interleaver uses one of time interleaver groups, and a boundary between the time interleaver groups is a boundary between Physical Layer Pipes (PLPs) of a core layer corresponding to the core layer signal.