Apparatus for transmitting and receiving a signal and method of transmitting and receiving a signal
AssigneeLG Electronics Inc.
InventorsWoo Suk Ko, Sang Chul Moon
Life of this patent
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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.
Claims14
A transmitter for transmitting at least one broadcasting signal having PLP (Physical Layer Pipe) data to a receiver, the transmitter comprising:
- an LDPC FEC Encoder configured to LDPC encode the PLP data and output FECFrame;
- a mapper configured to convert the FECFrame to XFECFrame by QAM constellation;
- a FEC-Frame-Header-Insertion configured to insert FECFrame header in front of the XFECFrame;
- a data slice builder configured to output at least one data slice based on the XFECFrame and the FECFrame header;
- a time-interleaver configured to perform time-interleaving at a level of the at least one data slice;
- a frequency-interleaver configured to frequency-interleave the time-interleaved at least one data slice;
- and
- a frame builder configured to build a signal frame based on the frequency-interleaved at least one data slice and preamble symbols having Layer-1 (L1) signaling information for signaling the at least one data slice.
A receiver for receiving at least one broadcasting signal having PLP (Physical Layer Pipe), the receiver comprising:
- a receiving unit configured to receive a signal frame including at least one data slice and preamble symbols having Layer-1 (L1) signaling information for signaling the at least one data slice;
- a frequency-deinterleaver configured to frequency-deinterleave the received signal frame;
- a time-deinterleaver configured to time-deinterleave the frequency-deinterleaved signal frame at a level of the at least one data slice;
- a data slice parser configured to output data slice packets of PLP from the at least one data slice, the data slice packets including header;
- a FEC-Frame-Header-Extractor configured to obtain the header from the data slice packets;
- and
- a decoder configured to decode the data slice packets by LDPC (low density parity check) scheme.
A method of transmitting at least one broadcasting signal having PLP (Physical Layer Pipe) data to a receiver, the method comprising:
- LDPC-encoding the PLP data and outputting FECFrame;
- mapping the FECFrame to XFECFrame by QAM constellation;
- inserting FECFrame header in front of the XFECFrame;
- building at least one data slice based on the XFECFrame and the FECFrame header;
- time-interleaving at a level of the at least one data slice;
- frequency-interleaving the time-interleaved at least one data slice;
- and
- building a signal frame based on the frequency-interleaved at least one data slice and preamble symbols having Layer-1 (L1) signaling information for signaling the data slices.
A method of receiving at least one broadcasting signal having PLP (Physical Layer Pipe), the method comprising:
- receiving a signal frame including at least one data slice and preamble symbols having Layer-1 (L1) signaling information for signaling the at least one data slice;
- frequency-deinterleaving the received signal frame;
- time-deinterleaving the frequency-deinterleaved signal frame at a level of the at least one data slice;
- outputting data slice packets of PLP from the at least one data slice, the data slice packets including header;
- obtaining the header from the data slice packets;
- decoding the data slice packets by LDPC (low density parity check) decoding scheme.
Dependencies are inferred from the claim text.