Apparatus for transmitting broadcast signals, apparatus for receiving broadcast signals, method for transmitting broadcast signals method for receiving broadcast signals

• US 9,800,307 B2
• Filed: 08/01/2014
• Issued: 10/24/2017
• Est. Priority Date: 08/01/2013
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Moon, Sangchul, Ko, Woosuk, Hong, Sungryong, Kim, Jinwoo, Shin, Jongwoong
• Primary Examiner(s): KASSA, ZEWDU A
• Application Number:
  US14/908,991
• Publication Number:
  US 20160173181A1
• Time in Patent Office: 1,180 Days
• Field of Search: 375267, 375260, 375259, 375316, 375295
• CPC Class Codes: H04B 7/0413 MIMO systems
• CPC Class Codes: H04B 7/0478 Special codebook structures directed to feedback optimisation
• CPC Class Codes: H04L 1/0041 Arrangements at the transmitter end
• CPC Class Codes: H04L 1/0047 Decoding adapted to other signal detection operation in conjunction with sequence estimation or equalization H04L25/03286
• CPC Class Codes: H04L 1/0057 Block codes H04L1/0061, H04L1/0064 take precedence
• CPC Class Codes: H04L 1/0063 Single parity check
• CPC Class Codes: H04L 27/2601 Multicarrier modulation systems
• CPC Class Codes: H04L 27/2637 with direct modulation of individual subcarriers
• CPC Class Codes: H04L 27/2646 using feedback from receiver for adjusting OFDM transmission parameters, e.g. transmission timing or guard interval length
• CPC Class Codes: H04L 5/0023 Time-frequency-space
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0091 Signaling for the administration of the divided path
• CPC Class Codes: H04N 21/23614 Multiplexing of additional data and video streams arrangements for simultaneous broadcast of plural pieces of information H04H20/28
• CPC Class Codes: H04N 21/2362 Generation or processing of Service Information [SI]
• CPC Class Codes: H04N 21/2381 Adapting the multiplex stream to a specific network, e.g. an Internet Protocol [IP] network transmission of MPEG streams over ATM H04L12/5601
• CPC Class Codes: H04N 21/2383 Channel coding or modulation of digital bit-stream, e.g. QPSK modulation arrangements for detecting or preventing errors in the information received by adapting the channel coding H04L1/0009; analogue front ends or means for connecting modulators, demodulators or transceivers to a transmission line H04L27/0002
• CPC Class Codes: H04N 21/41407 embedded in a portable device, e.g. video client on a mobile phone, PDA, laptop constructional details of equipment or arrangements specially adapted for portable computer application G06F1/1626; arrangements specially adapted for mobile receivers in broadcast systems H04H20/57
• CPC Class Codes: H04N 21/4345 Extraction or processing of SI, e.g. extracting service information from an MPEG stream
• CPC Class Codes: H04N 21/4381 Recovering the multiplex stream from a specific network, e.g. recovering MPEG packets from ATM cells transmission of MPEG streams over ATM H04L12/5601
• CPC Class Codes: H04N 21/4382 Demodulation or channel decoding, e.g. QPSK demodulation analog front ends or means for connecting modulators, demodulators or transceivers to a transmission line H04L27/0002
• CPC Class Codes: H04N 21/6131 : involving transmission via a mobile phone network wireless downlink channel access H04W74/006
• CPC Class Codes: H04N 7/08 : Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band , e.g. by time division H04N7/007 takes precedence

Abstract

The present invention provides a method of transmitting broadcast signals. The method includes, encoding Data Pipe, DP, data according to a code rate, wherein the encoding further includes Low-Density Parity-Check, LDPC, encoding the DP data, Bit interleaving the LDPC encoded DP data, and mapping the bit interleaved DP data onto constellations; building at least one signal frame by mapping the encoded DP data; and modulating data in the built signal frame by an Orthogonal Frequency Division Multiplexing, OFDM, method and transmitting the broadcast signals having the modulated data.

Claims

1. An apparatus for transmitting broadcast signals, the apparatus including:

an encoder to encode Data Pipe, DP, data according to 64800 bit codeword and 10/15 code rate based on addresses in a parity check matrix;

Multi-Input Multi-Output, MIMO, encoder to MIMO encode the encoded DP data;

a frame builder to build at least one signal frame by mapping the MIMO encoded DP data;

a modulator to modulate data in the built signal frame by an Orthogonal Frequency Division Multiplexing, OFDM, method; and

a transmitter to transmit the broadcast signals having the modulated data,

wherein the addresses in the parity check matrix are expressed as;

2. The apparatus of claim 1, further including:

a constellation mapper to constellation map the encoded DP data into at least one symbol,

wherein the MIMO encoding is performed after the constellation mapping.

3. The apparatus of claim 1,

wherein the codeword have the information bits and the parity bits,

wherein the parity bits are calculated using the information bits based on the addresses in the parity check matrix.

4. An apparatus for receiving broadcast signals, the apparatus including:

a receiver to receive broadcast signals having modulated data in signal frames;

a de-modulator to de-modulate the modulated data by an Orthogonal Frequency Division Multiplexing, OFDM, method;

a parser to parse at least one signal frame by de-mapping Data Pipe, DP, data;

a Multi-Input Multi-Output, MIMO, decoder to MIMO decode the DP data; and

a decoder to decode the DP data according to 64800 bit codeword and 10/15 code rate based on addresses in a parity check matrix,

wherein the addresses in the parity check matrix are expressed as;

5. The apparatus of claim 4, further including:

a constellation demapper to constellation demap the MIMO decoded DP data,

wherein the MIMO decoding is performed before the constellation mapping.

6. The apparatus of claim 4,

wherein the codeword have the information bits and the parity bits,

wherein the parity bits are calculated using the information bits based on the addresses in the parity check matrix.