Broadcast signal transmission device, broadcast signal reception device, broadcast signal transmission method, and broadcast signal reception method
AssigneeLG Electronics Inc.
InventorsJongseob Baek, Woosuk Ko
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Abstract
A broadcast signal reception method, according to one embodiment of the present invention, may comprise the steps of: receiving a broadcast signal, demodulating the received broadcast signal by an orthogonal frequency-division multiplexing (OFDM) method, parsing at least one signal frame from the demodulated broadcast signal, convolutionally deinterleaving data in the at least one parsed signal frame, block deinterleaving the convolutionally deinterleaved data, cell deinterleaving the block deinterleaved data, and decoding the cell deinterleaved data.
Claims14
A broadcast signal reception method performed by an apparatus comprising the steps of:
- receiving a broadcast signal;
- demodulating the received broadcast signal;
- parsing at least one signal frame from the demodulated broadcast signal;
- convolutionally deinterleaving data in the at least one parsed signal frame;
- block deinterleaving the convolutionally deinterleaved data;
- demapping the block deinterleaved data;
- cell deinterleaving the demapped data using an Forward Error Correction (FEC) memory that is a memory for FEC decoding the cell deinterleaved data, wherein the cell deinterleaving includes random writing the demapped data into the FEC memory,
- wherein the random writing is performed based on a permutation sequence and the permutation sequence varies for every FEC block of the demapped data;
- and
- FEC decoding the cell deinterleaved data.
A broadcast signal reception apparatus comprising:
- a receiver configured to receive a broadcast signal;
- a demodulator configured to demodulate the received broadcast signal;
- a parser configured to parse at least one signal frame from the demodulated broadcast signal;
- a convolutional deinterleaver configured to convolutionally deinterleave data in the at least one parsed signal frame;
- a block deinterleaver configured to block deinterleave the convolutionally deinterleaved data;
- a demapper configured to demap the block deinterleaved data;
- a cell deinterleaver configured to cell deinterleave the demapped data using an Forward Error Correction (FEC) memory that is a memory for FEC decoding the cell deinterleaved data, wherein the cell deinterleaving includes random writing the demapped data into the FEC memory,
- wherein the random writing is performed based on a permutation sequence and the permutation sequence varies for every FEC block of the demapped data;
- and
- an FEC decoder configured to decode the cell deinterleaved data.
A broadcast signal reception method performed by an apparatus comprising the steps of:
- receiving a broadcast signal;
- demodulating the received broadcast signal;
- parsing at least one signal frame from the demodulated broadcast signal;
- convolutionally deinterleaving data in the at least one parsed signal frame;
- block deinterleaving the convolutionally deinterleaved data;
- processing the block deinterleaved data by performing at least one of cell deinterleaving operation and demapping operation using one or more Forward Error Correction (FEC) memories, wherein the cell deinterleaving operation includes random writing operation based on a permutation sequence and linear reading operation and the permutation sequence varies for every FEC block of the demapped data;
- and
- FEC decoding the processed data using the one or more FEC memories.
A broadcast signal reception apparatus comprising:
- a receiver for receiving a broadcast signal;
- a demodulator for demodulating the received broadcast signal;
- a parser for parsing at least one signal frame from the demodulated broadcast signal;
- a convolutional deinterleaver for convolutionally deinterleaving data in the at least one parsed signal frame;
- a block deinterleaver for block deinterleaving the convolutionally deinterleaved data;
- a processor for processing the block deinterleaved data by performing at least one of cell deinterleaving operation and demapping operation using one or more Forward Error Correction (FEC) memories, wherein the cell deinterleaving operation includes random writing operation based on a permutation sequence and linear reading operation and the permutation sequence varies for every FEC block of the demapped data;
- and
- an FEC decoder for decoding the processed data using the one or more FEC memories.
Dependencies are inferred from the claim text.