APPARATUS FOR TRANSMITTING BROADCAST SIGNALS, APPARATUS FOR RECEIVING BROADCAST SIGNALS, METHOD FOR TRANSMITTING BROADCAST SIGNALS AND METHOD FOR RECEIVING BROADCAST SIGNALS
First Claim
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1. An apparatus for transmitting broadcast signals, the apparatus comprising:
- an encoder to encode Data Pipe (DP) data according to a code rate;
a frame builder to build at least one signal frame by mapping the encoded DP data;
a modulator to modulate data in the built signal frame by an Orthogonal Frequency Division Multiplexing (OFDM) method;
a preamble inserter to insert a preamble at a beginning of each signal frame in a time domain; and
a transmitter to transmit the broadcast signals having the modulated data.
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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.
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Citations
10 Claims
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1. An apparatus for transmitting broadcast signals, the apparatus comprising:
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an encoder to encode Data Pipe (DP) data according to a code rate; a frame builder to build at least one signal frame by mapping the encoded DP data; a modulator to modulate data in the built signal frame by an Orthogonal Frequency Division Multiplexing (OFDM) method; a preamble inserter to insert a preamble at a beginning of each signal frame in a time domain; and a transmitter to transmit the broadcast signals having the modulated data. - View Dependent Claims (2, 3, 4, 5)
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6. An apparatus for receiving broadcast signals, the apparatus comprising:
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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; and a decoder to decode the DP data according to a code rate. - View Dependent Claims (7, 8, 9, 10)
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Specification