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公开(公告)号：US20210167802A1
公开(公告)日：2021-06-03
申请号：US17176903
申请日：2021-02-16
Inventor： Sung-Ik PARK , Sun-Hyoung KWON , Heung-Mook KIM , Jae-Young LEE , 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 256-symbol mapping.
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公开(公告)号：US20210159921A1
公开(公告)日：2021-05-27
申请号：US17165625
申请日：2021-02-02
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 3/15. 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：US20210159920A1
公开(公告)日：2021-05-27
申请号：US17165614
申请日：2021-02-02
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：US20210021284A9
公开(公告)日：2021-01-21
申请号：US16435283
申请日：2019-06-07
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 3/15. 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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15.发明申请公开(公告)号：US20200304246A1
公开(公告)日：2020-09-24
申请号：US16823322
申请日：2020-03-18
Inventor： Seok-Ki AHN , Sung-Ik PARK , Jae-Hyun SEO
Abstract: Disclosed herein are a method of retransmission for downlink transmission of a wireless communication system and an apparatus for the same. The method includes receiving multiple feedback signals corresponding to a transmission failure from multiple terminals corresponding to point-to-multipoint transmission, generating retransmission data in response to the multiple feedback signals, and transmitting the retransmission data to the multiple terminals.
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Patent Agency Ranking
16.发明申请公开(公告)号：US20200260232A1
公开(公告)日：2020-08-13
申请号：US16858325
申请日：2020-04-24
Inventor： Sun-Hyoung KWON , Sung-Ik PARK , Jae-Young LEE
Abstract: A signal multiplexing apparatus and method using layered division multiplexing are disclosed. A signal multiplexing apparatus 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 using the time-interleaved signal and L1 signaling information.
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17.发明申请公开(公告)号：US20200220762A1
公开(公告)日：2020-07-09
申请号：US16821639
申请日：2020-03-17
Inventor： Sung-Ik PARK , Jae-Young LEE , Sun-Hyoung KWON , Heung-Mook KIM , Nam-Ho HUR
Abstract: An apparatus and method for multiplexing signals using layered division multiplexing are disclosed. A signal multiplexing apparatus according to an embodiment of the present invention includes a combiner configured to combine a core layer signal and an enhanced layer signal at different power levels, and a time interleaver configured to perform interleaving applied to both the core layer signal and the enhanced layer signal.
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18.发明申请公开(公告)号：US20200186289A1
公开(公告)日：2020-06-11
申请号：US16791822
申请日：2020-02-14
Inventor： Nam-Ho HUR , Sun-Hyoung KWON , Sung-Ik PARK , Heung-Mook KIM , Jae-Young LEE
Abstract: An apparatus and method for multiplexing signals using layered division multiplexing are disclosed. A signal multiplexing apparatus according to an embodiment of the present invention includes a combiner configured to combine a core layer signal and an enhanced layer signal at different power levels to generate a multiplexed signal, a power normalizer configured to reduce power of the multiplexed signal to power corresponding to the core layer signal, and a time interleaver configured to perform interleaving applied to both the core layer signal and the enhanced layer signal.
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公开(公告)号：US20200077126A1
公开(公告)日：2020-03-05
申请号：US16557528
申请日：2019-08-30
Inventor： Hyun-Jeong YIM , Jae-Young LEE , Sung-Ik PARK , Heung-Mook KIM
IPC: H04N21/2362 , H04N21/2665 , H04N21/434 , H04L12/24
Abstract: Disclosed herein are a method and apparatus for providing and using a broadcast service. Multiple layers of contents may be provided over a broadcast network and a communication network. A terminal may acquire the multiple layers over the broadcast network and the communication network. When a specified layer cannot be acquired over the broadcast network, the terminal may acquire the specified layer over the communication network, using service-layer signaling information provided over the broadcast network. The service-layer signaling information may include information used to acquire the specified layer over the communication network.
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20.发明申请公开(公告)号：US20200052723A1
公开(公告)日：2020-02-13
申请号：US16658254
申请日：2019-10-21
Inventor： Sung-Ik PARK , Sun-Hyoung KWON , Jae-Young LEE , Heung-Mook KIM
Abstract: A parity puncturing apparatus and method for variable length signaling information are disclosed. A parity puncturing apparatus according to an embodiment of the present invention includes memory configured to provide a parity bit string for parity puncturing for the parity bits of an LDPC codeword whose length is 16200 and whose code rate is 3/15, and a processor configured to puncture a number of bits corresponding to a final puncturing size from the rear side of the parity bit string.
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