公开(公告)号：US20210266013A1

公开(公告)日：2021-08-26

申请号：US17315450

申请日：2021-05-10

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

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

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

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.

公开(公告)号：US20210152412A1

公开(公告)日：2021-05-20

申请号：US17140430

申请日：2021-01-04

Applicant: Electronics and Telecommunications Research Institute

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

IPC: H04L27/26 ,  H04L29/06 ,  H04L1/00 ,  H04J11/00 ,  H04L7/08

Abstract: An apparatus and method for broadcast signal frame using a bootstrap and a preamble 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 interleaving on a BICM output signal; and a frame builder configured to generate a broadcast signal frame including a bootstrap and a preamble using the time-interleaved signal.

公开(公告)号：US20210144040A1

公开(公告)日：2021-05-13

申请号：US17153038

申请日：2021-01-20

Applicant: Electronics and Telecommunications Research Institute

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

IPC: H04L27/26 ,  H03M13/11 ,  H04L1/00 ,  H03M13/25 ,  H03M13/27 ,  H03M13/29 ,  H03M13/35

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：US20210119729A1

公开(公告)日：2021-04-22

申请号：US17132186

申请日：2020-12-23

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

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

IPC: H04L1/00 ,  H04J99/00

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：US20210019228A1

公开(公告)日：2021-01-21

申请号：US17060768

申请日：2020-10-01

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: G06F11/10 ,  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 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：US20200305031A1

公开(公告)日：2020-09-24

申请号：US16659714

申请日：2019-10-22

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jae-Young LEE ,  Sung-Ik PARK ,  Heung-Mook KIM ,  Hyun-Jeong YIM

IPC: H04W36/00 ,  H04W36/14 ,  H04W36/30 ,  H04L12/26 ,  H04B17/336

Abstract: Disclosed herein are a broadcast signal reception method using network switching and an apparatus for the same. The broadcast signal reception method using network switching includes determining, by a broadcast signal reception apparatus, a network-switching time point based on a network-switching condition that is set in consideration of at least one of a characteristics of a broadcast signal received over a broadcast network during a preset time period and a continuity of packets received over the broadcast network during the preset time period, and receiving, by the broadcast signal reception apparatus, the broadcast signal by performing network switching to a broadband network at the network-switching time point.

公开(公告)号：US20200288469A1

公开(公告)日：2020-09-10

申请号：US16880545

申请日：2020-05-21

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

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.

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

IPC: H04L27/26 ,  H04L1/00 ,  H04L25/02

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.

公开(公告)号：US20200212938A1

公开(公告)日：2020-07-02

申请号：US16808288

申请日：2020-03-03

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

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.

公开(公告)号：US20200153519A1

公开(公告)日：2020-05-14

申请号：US16744421

申请日：2020-01-16

Applicant: Electronics and Telecommunications Research Institute

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.