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Broadcast signal frame generating apparatus and broadcast signal frame generating method using layered division multiplexing

  • US 10,631,136 B2
  • Filed: 01/29/2019
  • Issued: 04/21/2020
  • Est. Priority Date: 03/06/2015
  • Status: Active Grant
First Claim
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1. A method of generating broadcast signal frame, comprising:

  • generating a multiplexed signal by combining a core layer signal and an enhanced layer signal at different power levels;

    reducing power of the multiplexed signal to a power level corresponding to the core layer signal;

    generating a time-interleaved signal by performing time interleaving that is applied to both the core layer signal and the enhanced layer signal after combining the core layer signal and the enhanced layer signal; and

    generating a broadcast signal frame including a preamble for signaling start position information of Physical Layer Pipes (PLPs),wherein the time interleaving is shared for both the core layer signal and the enhanced layer signalwherein the broadcast signal frame includesa bootstrap;

    the preamble; and

    a super-imposed payload, andwherein the start position information is identical to an index corresponding to a first data cell of a Physical Layer Pipe.

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