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Apparatus for transmitting broadcast signals, apparatus for receiving broadcast signals, method for transmitting broadcast signals and method for receiving broadcast signals

  • US 10,158,517 B2
  • Filed: 09/01/2017
  • Issued: 12/18/2018
  • Est. Priority Date: 02/06/2015
  • Status: Active Grant
First Claim
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1. A method for transmitting broadcast signals, the method comprising:

  • encoding service data;

    mapping the encoded service data to symbols;

    building a signal frame including the symbols;

    frequency interleaving the symbols in the signal frame,wherein after an interleaving sequence is generated based on a toggle bit, a basic interleaving sequence, and a symbol offset, it is checked whether or not an address of the generated interleaving sequence is within a range of an OFDM symbol being frequency-interleaved,wherein after checking the address, the symbols are frequency interleaved using the interleaving sequence, andwherein when the FFT size is 32K, a single permutation is applied to the basic interleaving sequence, and when the FFT size is 8K or 16K, different permutations are applied to the basic interleaving sequence; and

    modulating the frequency interleaved symbols and transmitting the modulated symbols via the broadcast signals.

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