-
公开(公告)号：US11316536B2
公开(公告)日：2022-04-26
申请号：US16808284
申请日：2020-03-03
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 4/15. 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).
-
公开(公告)号：US11303297B2
公开(公告)日：2022-04-12
申请号：US17006552
申请日：2020-08-28
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 1024-symbol mapping.
-
公开(公告)号：US11177829B2
公开(公告)日：2021-11-16
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.
-
14.发明授权公开(公告)号：US11153723B2
公开(公告)日：2021-10-19
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.
-
15.发明授权公开(公告)号：US11128509B2
公开(公告)日：2021-09-21
申请号：US16760000
申请日：2018-10-31
Inventor： Sung-Ik Park , Jae-Young Lee , Sun-Hyoung Kwon , Nam-Ho Hur , Heung-Mook Kim
Abstract: An apparatus and method for transmitting broadcast signal to which channel bonding is applied are disclosed. The apparatus according to the present invention includes an input formatting unit configured to generate baseband packets corresponding to a plurality of packet types using data corresponding to a physical layer pipe; a stream partitioner configured to partition the baseband packets into a plurality of partitioned streams corresponding to the plurality of packet types; BICM units configured to perform error correction encoding, interleaving and modulation corresponding to the plurality of partitioned streams, respectively; and waveform generators configured to generate RF transmission signals corresponding to the plurality of partitioned streams, respectively.
-
Patent Agency Ranking
公开(公告)号：US11025349B1
公开(公告)日：2021-06-01
申请号：US16863393
申请日：2020-04-30
Inventor： Sung-Jun Ahn , Bo-Mi Lim , Sun-Hyoung Kwon , Sung-Ik Park , Jae-Young Lee
IPC: H04B17/336 , H04B17/318 , H04L1/00
Abstract: Disclosed herein are a method for channel decoding using noise level correction in a high-speed mobile reception environment and an apparatus for the same. The method includes estimating, by a signal receiver that is based on OFDM and is moving at high speed, Inter-Carrier Interference (ICI) power for received signal power based on the movement speed of the signal receiver; calculating, by the signal receiver, a Signal-to-Noise Ratio (SNR) for a received signal using an estimate of the ICI power; and decoding, by the signal receiver, a channel code based on a Log Likelihood Ratio (LLR) per bit, calculated based on the SNR, and the received signal.
-
公开(公告)号：US10931491B2
公开(公告)日：2021-02-23
申请号：US16460189
申请日：2019-07-02
Inventor： Jae-Young Lee , Sun-Hyoung Kwon , Sung-Ik Park , Bo-Mi Lim , Heung-Mook Kim
IPC: H04L27/26 , H03M13/25 , H03M13/11 , H04L1/00 , H03M13/27 , H03M13/29 , H03M13/35 , H04L5/00 , H03M13/15
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 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 the time interleaver performs the interleaving by using one of a plurality of operation modes.
-
公开(公告)号：US10924208B2
公开(公告)日：2021-02-16
申请号：US16328453
申请日：2017-09-08
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.
-
公开(公告)号：US10831599B2
公开(公告)日：2020-11-10
申请号：US16436748
申请日：2019-06-10
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.
-
公开(公告)号：US10666477B2
公开(公告)日：2020-05-26
申请号：US16442780
申请日：2019-06-17
Inventor： Jae-Young Lee , Sung-Ik Park , Sun-Hyoung Kwon , Heung-Mook Kim
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 preamble for signaling, type information of Physical Layer Pipes (PLPs) and time interleaver information shared by the core layer signal and the enhanced layer signal.
-
-
-
-
-
-
-
-
-
Search Results
278
records
(took 0.028 seconds)
