公开(公告)号：US20220264499A1

公开(公告)日：2022-08-18

申请号：US17735261

申请日：2022-05-03

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jae-Young LEE ,  Sung-Ik PARK ,  Sun-Hyoung KWON ,  Heung-Mook KIM ,  Nam-Ho HUR

IPC: H04W56/00 ,  H04L5/00

Abstract: Disclosed herein are a gateway-signaling method for frequency/timing offsets and an apparatus for the same. An apparatus for transmitting a broadcast signal according to an embodiment of the present invention includes a frequency/timing decision unit for determining a center frequency to which a frequency offset is applied using a carrier offset, which is identified using a timing and a management packet transmitted through a Studio-to-Transmitter Link (STL); and an RF signal generation unit for generating an RF signal to be transmitted, which corresponds to the center frequency.

公开(公告)号：US20220069845A1

公开(公告)日：2022-03-03

申请号：US17522990

申请日：2021-11-10

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Sung-Ik PARK ,  Sun-Hyoung KWON ,  Jae-Young LEE ,  Heung-Mook KIM

IPC: H03M13/27 ,  H04L1/00 ,  H03M13/25 ,  H03M13/29 ,  H03M13/11 ,  H03M13/00 ,  H03M13/15

Abstract: A parity interleaving apparatus and method for fixed length signaling information are disclosed. A parity interleaving apparatus according to an embodiment of the present invention includes a processor configured to generate a parity bit string for parity puncturing by segmenting parity bits of an LDPC codeword whose length is 16200 and whose code rate is 3/15, into a plurality of groups, and group-wise interleaving the groups using an order of group-wise interleaving; and memory configured to provide the parity bit string for parity puncturing to a parity puncturing unit.

公开(公告)号：US20210351970A1

公开(公告)日：2021-11-11

申请号：US17379820

申请日：2021-07-19

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Sung-Ik PARK ,  Jae-Young LEE ,  Sun-Hyoung KWON ,  Heung-Mook KIM ,  Nam-Ho HUR

IPC: H04L27/26 ,  H03M13/27 ,  H04L1/00 ,  H03M13/25 ,  H04L5/00

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.

公开(公告)号：US20210351793A1

公开(公告)日：2021-11-11

申请号：US17385678

申请日：2021-07-26

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Sung-Ik PARK ,  Sun-Hyoung KWON ,  Jae-Young LEE ,  Heung-Mook KIM ,  Nam-Ho HUR

IPC: H03M13/11 ,  H03M13/25 ,  H03M13/27

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 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 1024-symbol mapping.

公开(公告)号：US20210306119A1

公开(公告)日：2021-09-30

申请号：US17214482

申请日：2021-03-26

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jae-Hyun SEO ,  Sung-Ik PARK ,  Seok-Ki AHN ,  Jae-Young LEE

IPC: H04L5/00 ,  H04L27/26 ,  H04L1/00 ,  H04W72/04

Abstract: Disclosed herein are a transmission apparatus, a reception apparatus and a transmission/reception method for an OFDM-based broadcasting system. The transmission apparatus includes multiple transmission frame generation units for generating multiple transmission frames from transmission data, an extended frame combination unit for generating an extended frame by combining the multiple transmission frames so that the multiple transmission frames are adjacent to each other based on a frequency, an extended OFDM modulation unit for modulating the extended frame and then generating a modulated signal, and a frequency up-conversion unit for performing frequency up-conversion on the modulated signal and generating a transmission signal, wherein each of the transmission frame generation units includes a data input unit for receiving transmission data, a channel-encoding unit for encoding the received transmission data and generating encoded data, and a framing and interleaving unit for framing and interleaving the encoded data and generating a transmission frame.

公开(公告)号：US20210250050A1

公开(公告)日：2021-08-12

申请号：US17240801

申请日：2021-04-26

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Sung-Ik PARK ,  Sun-Hyoung KWON ,  Bo-Mi LIM ,  Jae-Young LEE ,  Heung-Mook KIM ,  Nam-Ho HUR

IPC: H03M13/27 ,  H04L1/00 ,  H03M13/11 ,  H03M13/25

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.

公开(公告)号：US20210144237A1

公开(公告)日：2021-05-13

申请号：US17153750

申请日：2021-01-20

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

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

IPC: H04L29/08 ,  H04L1/00 ,  H04L27/26

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).

公开(公告)号：US20210006268A1

公开(公告)日：2021-01-07

申请号：US17025894

申请日：2020-09-18

Applicant: Electronics and Telecommunications Research Institute

Inventor： Sung-Ik PARK ,  Sun-Hyoung KWON ,  Jae-Young LEE ,  Heung-Mook KIM ,  Nam-Ho HUR

IPC: H03M13/27 ,  H03M13/11 ,  H03M13/25

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 5/15. 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 4096-symbol mapping.

公开(公告)号：US20200351469A1

公开(公告)日：2020-11-05

申请号：US16929990

申请日：2020-07-15

Applicant: Electronics and telecommunications research institute

Inventor： Jae-Young LEE ,  Sung-Ik PARK ,  Sun-Hyoung KWON ,  Heung-Mook KIM

IPC: H04N7/081 ,  H04H20/42 ,  H04L1/00 ,  H04L27/26 ,  H04N21/2343 ,  H04N21/2383 ,  H04N19/187 ,  H04N3/28 ,  H04N5/445 ,  H04N21/236

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, size information of Physical Layer Pipes (PLPs) and time interleaver information shared by the core layer signal and the enhanced layer signal.

公开(公告)号：US20200236202A1

公开(公告)日：2020-07-23

申请号：US16840565

申请日：2020-04-06

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jae-Young LEE ,  Heung-Mook KIM ,  Sung-Ik PARK ,  Sun-Hyoung KWON

IPC: H04L29/08 ,  H04L1/00 ,  H04L5/00

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 time interleaver information shared by the core layer signal and the enhanced layer signal, using the time-interleaved signal.