Apparatus and method for sending and receiving broadcast signals
AssigneeLG Electronics Inc.
InventorsJongseob BAEK, Woosuk KO, Sungryong HONG
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Abstract
A broadcast signal receiver is disclosed. A broadcast signal receiver according to an embodiment of the present invention comprises a synchronization & demodulation module performing signal detection and OFDM demodulation on a received broadcast signal; a frame parsing & deinterleaving module performing parsing and deinterleaving of a signal frame of the broadcast signal; a demapping & decoding module performing conversion of data of at least one Physical Layer Pipe (PLP) of the broadcast signal into the bit domain and FEC decoding of the converted PLP data; and an output processing module outputting a data stream by receiving the at least one PLP data.
Claims11
-12. (canceled)
A broadcast signal receiver comprising:
- a demodulator configured to demodulate a received broadcast signal;
- a frequency deinterleaver configured to frequency-deinterleave data comprised in the broadcast signal;
- a frame parser configured to parse a signal frame of the broadcast signal to output Physical Layer Pipe (PLP) data of the signal frame;
- a constellation demapper configured to perform constellation demapping on the PLP data;
- a bit deinterleaver configured to bit-deinterleave the PLP data;
- a forward error correction (FEC) decoder configured to perform error correction decoding on PLP data;
- wherein the signal frame comprises a preamble and at least one subframe,
- wherein a symbol offset generator of the frequency deinterleaver is reset on a first symbol of the preamble, and
- wherein the symbol offset generator of the frequency deinterleaver is reset on a first symbol of a second subframe and subsequent subframes except a first subframe, the first subframe being a subframe which immediately follows the preamble.
A method for receiving a broadcast signal, comprising:
- demodulating a received broadcast signal;
- frequency-deinterleaving data comprised in the broadcast signal;
- parsing a signal frame of the broadcast signal to output Physical Layer Pipe (PLP) data of the signal frame;
- performing constellation demapping on the PLP data;
- bit-deinterleaving the PLP data;
- performing error correction decoding on PLP data;
- wherein the signal frame comprises a preamble and at least one subframe,
- wherein symbol offset generating of the frequency-deinterleaving is reset on a first symbol of the preamble, and
- wherein the symbol offset generating of the frequency-deinterleaving is reset on a first symbol of a second subframe and subsequent subframes except a first subframe, the first subframe being a subframe which immediately follows the preamble.
Dependencies are inferred from the claim text.