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公开(公告)号：US11855716B2
公开(公告)日：2023-12-26
申请号：US17859969
申请日：2022-07-07
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.
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公开(公告)号：US11632136B2
公开(公告)日：2023-04-18
申请号：US17240801
申请日：2021-04-26
Inventor： Sung-Ik Park , Sun-Hyoung Kwon , Bo-Mi Lim , Jae-Young Lee , Heung-Mook Kim , Nam-Ho Hur
Abstract: A bit interleaver, a bit-interleaved coded modulation (BICM) device and a bit interleaving method are disclosed herein. The bit interleaver includes a first memory, a processor, and a second memory. The first memory stores a low-density parity check (LDPC) codeword having a length of 16200 and a code rate of 2/15. The processor generates an interleaved codeword by interleaving the LDPC codeword on a bit group basis. The size of the bit group corresponds to a parallel factor of the LDPC codeword. The second memory provides the interleaved codeword to a modulator for 256-symbol mapping.
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公开(公告)号：US11616864B2
公开(公告)日：2023-03-28
申请号：US17153750
申请日：2021-01-20
Inventor： Jae-Young Lee , Sung-Ik Park , Sun-Hyoung Kwon , Bo-Mi Lim , Heung-Mook Kim
Abstract: An apparatus and method for generating a broadcast signal frame for signaling a time interleaving mode are disclosed. An apparatus for generating broadcast signal frame according to an embodiment of the present invention includes a time interleaver configured to generate a time-interleaved signal by performing time interleaving on a BICM output signal; and a frame builder configured to generate a broadcast signal frame including a preamble for signaling a time interleaving mode corresponding to the time interleaver for each of physical layer pipes (PLPs).
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公开(公告)号：US11616600B2
公开(公告)日：2023-03-28
申请号：US17527013
申请日：2021-11-15
Inventor： Sun-Hyoung Kwon , Jae-Young Lee , Sung-Ik Park , Bo-Mi Lim , Heung-Mook Kim , Jin-Hyuk Song
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.
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公开(公告)号：US11387847B2
公开(公告)日：2022-07-12
申请号：US17060748
申请日：2020-10-01
Inventor： Bo-Mi Lim , Sun-Hyoung Kwon , Sung-Ik Park , Jae-Young Lee , Heung-Mook Kim , Nam-Ho Hur
Abstract: An apparatus and method for time interleaving corresponding to hybrid time interleaving mode are disclosed. An apparatus for time interleaving according to an embodiment of the present invention includes a twisted block interleaver configured to perform intra-subframe interleaving corresponding to time interleaving blocks; and a convolutional delay line configured to perform inter-subframe interleaving using an output of the twisted block interleaver.
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Patent Agency Ranking
公开(公告)号：US10931798B2
公开(公告)日：2021-02-23
申请号：US16593809
申请日：2019-10-04
Inventor： Jae-Young Lee , Sung-Ik Park , Sun-Hyoung Kwon , Bo-Mi Lim , Heung-Mook Kim
Abstract: An apparatus and method for generating a broadcast signal frame for signaling a time interleaving mode are disclosed. An apparatus for generating broadcast signal frame according to an embodiment of the present invention includes a time interleaver configured to generate a time-interleaved signal by performing time interleaving on a BICM output signal; and a frame builder configured to generate a broadcast signal frame including a preamble for signaling a time interleaving mode corresponding to the time interleaver for each of physical layer pipes (PLPs).
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公开(公告)号：US10778817B2
公开(公告)日：2020-09-15
申请号：US16313790
申请日：2017-07-05
Inventor： Bo-Mi Lim , Sung-Ik Park , Sun-Hyoung Kwon , Jae-Young Lee , Heung-Mook Kim , Nam-Ho Hur
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; a power normalizer configured to reduce 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 time-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 start position information and size information for each of Physical Layer Pipes (PLPs). In this case, the Physical Layer Pipes include a core layer physical layer pipe corresponding to the core layer signal and an enhanced layer physical layer pipe corresponding to the enhanced layer signal.
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公开(公告)号：US10454536B2
公开(公告)日：2019-10-22
申请号：US15993023
申请日：2018-05-30
Inventor： Sung-Ik Park , Bo-Mi Lim , Sun-Hyoung Kwon , Heung-Mook Kim , Jae-Hyun Seo , Jae-Young Lee , Nam-Ho Hur , Hoi-Yoon Jung , David Gomez-Barquero , Eduardo Garro
IPC: H04L1/02 , H04B7/0413 , H04L25/02 , H04L1/00 , H04L1/06
Abstract: Disclosed herein are a method for transceiving a broadcast signal using a combination of multiple antenna schemes with layered division multiplexing and an apparatus for the method. A method for receiving a broadcast signal includes generating received signals based on signals that are received through multiple receiving antennas, estimating channels between the receiving antennas and transmitting antennas, restoring a core-layer signal corresponding to the received signals, and restoring an enhanced-layer signal based on a cancellation process, wherein the cancellation process corresponds to the core-layer signal and is separately performed for the individual receiving antennas.
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公开(公告)号：US10439760B2
公开(公告)日：2019-10-08
申请号：US15532065
申请日：2016-03-25
Inventor： Sun-Hyoung Kwon , Jae-Young Lee , Sung-Ik Park , Bo-Mi Lim , Heung-Mook Kim , Jin-Hyuk Song
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.
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公开(公告)号：US10404285B2
公开(公告)日：2019-09-03
申请号：US15703842
申请日：2017-09-13
Inventor： Sung-Ik Park , Sun-Hyoung Kwon , Bo-Mi Lim , Jae-Young Lee , Heung-Mook Kim , Nam-Ho Hur
Abstract: A bit interleaver, a bit-interleaved coded modulation (BICM) device and a bit interleaving method are disclosed herein. The bit interleaver includes a first memory, a processor, and a second memory. The first memory stores a low-density parity check (LDPC) codeword having a length of 16200 and a code rate of 4/15. The processor generates an interleaved codeword by interleaving the LDPC codeword on a bit group basis. The size of the bit group corresponds to a parallel factor of the LDPC codeword. The second memory provides the interleaved codeword to a modulator for 64-symbol mapping.
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