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公开(公告)号：US20210359708A1
公开(公告)日：2021-11-18
申请号：US17386373
申请日：2021-07-27
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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公开(公告)号：US20210119729A1
公开(公告)日：2021-04-22
申请号：US17132186
申请日：2020-12-23
Inventor： Sun-Hyoung KWON , Sung-Ik PARK , Jae-Young LEE , Bo-Mi LIM , Heung-Mook KIM , Nam-Ho HUR
Abstract: An apparatus and method for generating a broadcast signal frame corresponding to a time interleaver supporting a plurality of operation modes 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; 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 preamble includes a field indicating a start position of a first complete FEC block corresponding to each of physical layer pipes.
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公开(公告)号：US20210019228A1
公开(公告)日：2021-01-21
申请号：US17060768
申请日：2020-10-01
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 10/15. 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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44.发明申请公开(公告)号：US20200288469A1
公开(公告)日：2020-09-10
申请号：US16880545
申请日：2020-05-21
Inventor： Jae-Young LEE , Sung-Ik PARK , Sun-Hyoung KWON , Heung-Mook KIM , Nam-Ho HUR
IPC: H04W72/04 , H04L27/26 , H04J11/00 , H04L1/00 , H04L27/34 , H04W52/34 , H04L5/22 , H04L29/06 , H04W52/04
Abstract: An apparatus and method for broadcast signal frame using layered division multiplexing 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 bootstrap and a preamble using the time-interleaved signal.
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公开(公告)号：US20200235976A1
公开(公告)日：2020-07-23
申请号：US16652428
申请日：2018-05-24
Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE , KOREA MARITIME UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION
Inventor： Sung-Ik PARK , Jeong-Chang KIM , Jae-Young LEE , Sun-Hyoung KWON , Hyeong-Seok KIM , Heung-Mook KIM , Nam-Ho HUR
Abstract: Disclosed herein are an apparatus and method for decoding a bootstrap signal. The apparatus for decoding a bootstrap signal according to an embodiment of the present invention includes an operation unit for calculating the relative cyclic shift and the channel gain estimate of a received bootstrap signal and correcting the channel gain estimate using the relative cyclic shift, and a decoding unit for decoding the bootstrap signal using the corrected channel gain estimate.
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Patent Agency Ranking
公开(公告)号：US20200212938A1
公开(公告)日：2020-07-02
申请号：US16808288
申请日：2020-03-03
Inventor： Sung-Ik PARK , Sun-Hyoung KWON , Jae-Young LEE , Heung-Mook KIM , Nam-Ho HUR
Abstract: A modulator and a modulation method using a non-uniform 16-symbol signal constellation are disclosed. The modulator includes a memory and a processor. The memory receives a codeword corresponding to a low-density parity check (LDPC) code having a code rate of 4/15. The processor maps the codeword to 16 symbols of the non-uniform 16-symbol signal constellation on a 4-bit basis.
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47.发明申请公开(公告)号：US20200153519A1
公开(公告)日：2020-05-14
申请号：US16744421
申请日：2020-01-16
Inventor： Sung-Ik PARK , Sun-Hyoung KWON , Jae-Young LEE , Heung-Mook KIM , Nam-Ho HUR
IPC: H04H20/67 , H04L27/26 , H04L1/00 , H04L29/08 , H04H20/71 , H04W52/32 , H04H60/73 , H04J11/00 , H04H60/44 , H04H20/31
Abstract: An apparatus for transmitting broadcasting signal using transmitter identification scaled by 4-bit injection level code and method using the same are disclosed. An apparatus for transmitting broadcasting signal according to an embodiment of the present invention includes a waveform generator configured to generate a host broadcasting signal; a transmitter identification signal generator configured to generate a transmitter identification signal for identifying a transmitter, the transmitter identification signal scaled by an injection level code; and a combiner configured to inject the transmitter identification signal into the host broadcasting signal in a time domain so that the transmitter identification signal is transmitted synchronously with the host broadcasting signal.
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公开(公告)号：US20190393891A1
公开(公告)日：2019-12-26
申请号：US16559329
申请日：2019-09-03
Inventor： Sung-Ik PARK , Heung-Mook KIM , Sun-Hyoung KWON , Nam-Ho HUR
Abstract: A low density parity check (LDPC) encoder, an LDPC decoder, and an LDPC encoding method are disclosed. The LDPC encoder includes first memory, second memory, and a processor. The first memory stores an LDPC codeword having a length of 16200 and a code rate of 3/15. The second memory is initialized to 0. The processor generates the LDPC codeword corresponding to information bits by performing accumulation with respect to the second memory using a sequence corresponding to a parity check matrix (PCM).
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公开(公告)号：US20190356340A1
公开(公告)日：2019-11-21
申请号：US16530758
申请日：2019-08-02
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 16-symbol mapping.
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公开(公告)号：US20190356338A1
公开(公告)日：2019-11-21
申请号：US16527485
申请日：2019-07-31
Inventor： Sung-Ik PARK , Sun-Hyoung KWON , 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 64800 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 quadrature phase shift keying (QPSK) modulation.
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