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：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.

公开(公告)号：US20200220640A1

公开(公告)日：2020-07-09

申请号：US16781332

申请日：2020-02-04

Applicant: Electronics and Telecommunications Research Institute

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

IPC: H04J13/10 ,  H04L1/00 ,  H04L27/26 ,  H04B1/7073

Abstract: An apparatus for transmitting broadcasting signal using transmitter identification 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; 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.