公开(公告)号：US20190268729A1

公开(公告)日：2019-08-29

申请号：US16356609

申请日：2019-03-18

Applicant: LG ELECTRONICS INC.

Inventor： Byeongkook JEONG ,  Woosuk KO ,  Youngjin HONG ,  Sungryong HONG

IPC: H04W4/06 ,  H04L27/26 ,  H04L27/36 ,  H04L27/34

Abstract: The present invention provides an apparatus of transmitting broadcast signals. The apparatus includes, an encoder encoding service data, a constellation mapper mapping the encoded service data by either QAM, NUQ (Non Uniform QAM) or NUC (Non Uniform Constellation), a mapper mapping the mapped service data into a plurality of OFDM (Orthogonal Frequency Division Multiplex) symbols to build at least one signal frame, a modulator modulating data in the built at least one signal frame by an OFDM scheme and a transmitter transmitting the broadcast signals having the modulated data.

公开(公告)号：US20160119176A1

公开(公告)日：2016-04-28

申请号：US14992496

申请日：2016-01-11

Applicant: LG ELECTRONICS INC.

Inventor： Byeongkook JEONG ,  Woosuk KO ,  Youngjin HONG ,  Sungryong HONG ,  Jaeho HWANG

IPC: H04L27/34 ,  H04L27/38 ,  H03M13/27 ,  H04L1/00 ,  H03M13/11 ,  H04L27/26 ,  H04L27/36

CPC classification number: H04L27/3444 ,  H03M13/1102 ,  H03M13/1165 ,  H03M13/152 ,  H03M13/253 ,  H03M13/255 ,  H03M13/2707 ,  H03M13/2778 ,  H03M13/2792 ,  H03M13/2906 ,  H04B7/0413 ,  H04B7/0615 ,  H04H20/71 ,  H04L1/00 ,  H04L1/0041 ,  H04L1/0045 ,  H04L1/0057 ,  H04L1/0058 ,  H04L1/0071 ,  H04L1/0075 ,  H04L5/0023 ,  H04L27/0008 ,  H04L27/26 ,  H04L27/2602 ,  H04L27/2627 ,  H04L27/2697 ,  H04L27/3416 ,  H04L27/361 ,  H04L27/38 ,  H04L2001/0093

Abstract: The present invention provides a method of transmitting broadcast signals. The method includes, processing input streams into plural PLPs; encoding data of the each PLPs according to code rates, wherein the encoding data of the each PLPs further includes, encoding data of at least one PLP with LDPC codes, bit interleaving the LDPC encoded data of the PLP, mapping the bit interleaved data onto a set of constellations according to the code rate, MIMO encoding the mapped data, and time interleaving the MIMO encoded data; building at least one signal frame by mapping the encoded data of the each PLPs; and modulating data in the built signal frame by OFDM method and transmitting the broadcast signals having the modulated data, wherein the bit interleaved data of each PLPs are mapped by using either QAM, NUQ, or NUC.

Abstract translation: 本发明提供一种发送广播信号的方法。 该方法包括：将输入流处理成多个PLP; 根据码率编码每个PLP的数据，其中每个PLP的编码数据还包括：用LDPC码编码至少一个PLP的数据，对PLP的LDPC编码数据进行比特交织，将比特交织的数据映射到 根据码率，MIMO编码映射数据和对MIMO编码数据进行时间交织的星座集; 通过映射每个PLP的编码数据构建至少一个信号帧; 以及通过OFDM方法调制内置信号帧中的数据并发送具有调制数据的广播信号，其中通过使用QAM，NUQ或NUC来映射每个PLP的比特交织数据。

公开(公告)号：US20200092022A1

公开(公告)日：2020-03-19

申请号：US16422351

申请日：2019-05-24

Applicant: LG Electronics Inc.

Inventor： Jaeshin HAN ,  Sukbum LEE ,  Sangchae LIM ,  Youngjin HONG

IPC: H04H60/32 ,  H04H20/72 ,  H04N5/911 ,  H04H20/12 ,  H04N5/921

Abstract: The present invention relates to a signal processing apparatus and an image display apparatus including the same. The signal processing apparatus for processing a baseband signal demodulated from an RF signal, includes: a synchronizer; a channel estimator; an equalizer; an error corrector to perform error correction based on a signal output from the equalizer; and a mean square error calculator to calculate a mean square error based on a difference between an input signal input from the equalizer and a reference signal, wherein when the RF signal includes a co-channel interference signal, the error corrector performs error correction by using a mean square error in a time domain or mean square errors in a time domain and a spatial domain. Accordingly, a baseband signal, from which a defect is removed, may be obtained in response to various communication channels or broadcast channels.

公开(公告)号：US20210119715A1

公开(公告)日：2021-04-22

申请号：US17138225

申请日：2020-12-30

Applicant: LG Electronics Inc.

Inventor： Jaeshin HAN ,  Sukbum LEE ,  Sangchae LIM ,  Youngjin HONG

IPC: H04H60/32 ,  H04H20/72 ,  H04N5/921 ,  H04H20/12 ,  H04N5/911 ,  H04L25/03

Abstract: The present invention relates to a signal processing apparatus and an image display apparatus including the same. The signal processing apparatus for processing a baseband signal demodulated from an RF signal, includes: a synchronizer; a channel estimator; an equalizer; an error corrector to perform error correction based on a signal output from the equalizer; and a mean square error calculator to calculate a mean square error based on a difference between an input signal from the equalizer and a reference signal, wherein when the RF signal includes a co-channel interference signal, the error corrector performs error correction by using a mean square error in a time domain or mean square errors in a time domain and a spatial domain. Accordingly, a baseband signal, from which a defect is removed, may be obtained in response to various communication channels or broadcast channels.