Apparatus for transmitting and receiving a signal and method of transmitting and receiving a signal

Patent metadata

Field	Value
Publication number	US-10116416-B2
Application number	US-201715480891-A
Country	US
Kind code	B2
Filing date	Apr 6, 2017
Priority date	Jan 9, 2009
Publication date	Oct 30, 2018
Grant date	Oct 30, 2018

Abstract

The present invention relates to a method of transmitting and receiving signals and a corresponding apparatus. One aspect of the present invention relates to a method of extracting PLP from data slices.

First claim

What is claimed is:

1. A transmitter for transmitting at least one broadcast signal having Physical Layer Pipe (PLP) data, the transmitter comprising:
a Bose-Chadhuri-Hocquenghem (BCH) encoder to BCH encode the PLP data;
a Low Density Parity Check (LDPC) encoder to LDPC encode the BCH encoded PLP data and output Forward Error Correction Frames (FECFrames);
a bit interleaver to bit interleave data in the FECFrames;
a mapper to map the bit interleaved data in the FECFrames onto constellations;
an outer encoder to outer encode signaling information;
a zero-padding module to insert zeros into the outer encoded signaling information;
an inner encoder to inner encode the zero-inserted signaling information;
a parity puncturing module to puncture parity bits of the inner encoded signaling information;
a zero-removing module to remove the inserted zeros from the signaling information on which the parity puncturing is performed;
a time-interleaver to perform time-interleaving the mapped data based on a skip operation, wherein the time-interleaver writes the mapped data into an interleaving block and reads out the written data from the interleaving block excluding cells which are skipped according to the skip operation, wherein the time-interleaving is performed by calculating positions for cells having the mapped data and the cells to be skipped based on a row index and a column index;
a frame builder to build a signal frame including preamble symbols and data symbols, wherein the preamble symbols include the zero-removed signaling information for the time interleaved data and the data symbols include the time interleaved data; and
a modulator to modulate data in the signal frame by an Orthogonal Frequency Division Multiplexing (OFDM) scheme, wherein the signaling information includes channel bonding information for the at least one broadcast signal.

2. The transmitter of claim 1 , wherein the signaling information is repeated in the preamble symbols.

3. The transmitter of claim 1 , wherein the signaling information include PLP ID information identifying each of the PLP data and FEC type information indicating the LDPC scheme for the long LDPC FECframe or the short LDPC FECframe.

4. The transmitter of claim 1 , further comprising:
a second BCH encoder to BCH encode the signaling information; and
a second LDPC encoder to LDPC encode the BCH encoded signaling information.

5. A method of transmitting at least one broadcast signal having Physical Layer Pipe (PLP) data, the method comprising:
Bose-Chadhuri-Hocquenghem (BCH) encoding the PLP data;
Low Density Parity Check (LDPC) encoding the BCH encoded PLP data to output Forward Error Correction Frames (FECFrames);
bit interleaving data in the FECFrames;
mapping the bit interleaved data in the FECFrames onto constellations;
outer encoding signaling information;
zero-padding the outer encoded signaling information;
inner encoding the zero-padded signaling information;
parity puncturing the inner encoded signaling information;
zero-removing the signaling information on which the parity puncturing is performed;
performing time-interleaving the mapped data based on a skip operation, wherein the time-interleaving includes writing the mapped data into an interleaving block and reading out the written data from the interleaving block excluding cells which are skipped according to the skip operation, wherein the time-interleaving is performed by calculating positions for cells having the mapped data and the cells to be skipped based on a row index and a column index;
building a signal frame including preamble symbols and data symbols, wherein the preamble symbols include the zero-removed signaling information for the time interleaved data, and wherein the data symbols include the time interleaved data; and
modulating data in the signal frame by an Orthogonal Frequency Division Multiplexing (OFDM) scheme, wherein the signaling information includes channel bonding information for the at least one broadcast signal.

6. The method of claim 5 , wherein the signaling information is repeated in the preamble symbols.

7. The method of claim 5 , wherein the signaling information include PLP ID information identifying each of the PLP data and FEC type information indicating the LDPC scheme for the long LDPC FECframe or the short LDPC FECframe.

8. The method of claim 5 , further comprising:
BCH encoding the signaling information; and
LDPC encoding the BCH encoded signaling information.

9. A receiver for receiving at least one broadcast signal having Physical Layer Pipe (PLP) data, the receiver comprising:
a demodulator to demodulate the at least one broadcast signal by an Orthogonal Frequency Division Multiplexing (OFDM) scheme;
a frame parser to parse a signal frame in the demodulated broadcast signal, wherein the signal frame includes preamble symbols and data symbols, wherein the data symbols include data on which a time interleaving is performed, wherein the time-interleaving includes writing the mapped data into an interleaving block and reading out the written data from the interleaving block excluding cells which are skipped according to a skip operation, wherein the time-interleaving is performed by calculating positions for cells having the mapped data and the cells to be skipped based on a row index and a column index;
a time-deinterleaver to time-deinterleave the data in the data symbols;
a zero-padding module to insert zeros into signaling information in the preamble symbols;
an inner decoder to inner decode the zero-inserted signaling information;
a zero-removing module to remove the inserted zeros from the inner decoded signaling information;
an outer decoder to outer decode the zero-removed signaling information;
a demapper to demap the time-deinterleaved data to output Forward Error Correction Frames (FECFrames);
a bit deinterleaver to bit deinterleave data in the FECFrames;
a Low Density Parity Check (LDPC) decoder to LDPC decode the bit deinterleaved data in the FECFrames; and
a Bose-Chadhuri-Hocquenghem (BCH) decoder to BCH decode the LDPC decoded data to output PLP data, wherein the preamble symbols include the signaling information for the PLP data, wherein the signaling information includes channel bonding information for the at least one broadcast signal.

10. The receiver of claim 9 , wherein the signaling information is repeated in the preamble symbols.

11. The receiver of claim 9 , wherein the signaling information include PLP ID information identifying each of the PLP data and FEC type information indicating the LDPC scheme for the long LDPC FECframe or the short LDPC FECframe.

12. The receiver of claim 9 , further comprising:
an LDPC decoder to LDPC decode the signaling information; and
a BCH decoder to BCH decode the LDPC decoded signaling information.

13. A method of receiving at least one broadcast signal having Physical Layer Pipe (PLP) data, the method comprising:
demodulating the at least one broadcast signal by an Orthogonal Frequency Division Multiplexing (OFDM) scheme;
parsing a signal frame in the demodulated broadcast signal, wherein the signal frame includes preamble symbols and data symbols, wherein the data symbols include data on which a time interleaving is performed, wherein the time-interleaving includes writing the mapped data into an interleaving block and reading out the written data from the interleaving block excluding cells which are skipped according to a skip operation, wherein the time-interleaving is performed by calculating positions for cells having the mapped data and the cells to be skipped based on a row index and a column ind

Assignees

• Lg Electronics Inc

Inventors

• Ko Woo Suk
• Moon Sang Chul

Classifications

• H04H20/76

  Wired systems · CPC title

• H03M13/356

  Unequal error protection [UEP] · CPC title

• H04L1/0057

  Block codes (H04L1/0061, H04L1/0064 take precedence) · CPC title

• H03M13/2906

  using block codes (H03M13/2957 takes precedence) · CPC title

• H03M13/2721

  the interleaver involves a diagonal direction, e.g. by using an interleaving matrix with read-out in a diagonal direction · CPC title