CPC H04L 27/2613 (2013.01) [H04J 11/004 (2013.01); H04L 1/0063 (2013.01); H04L 1/0071 (2013.01); H04L 5/22 (2013.01); H04L 27/26 (2013.01); H04L 27/2602 (2013.01); H04L 27/34 (2013.01); H04L 65/611 (2022.05); H04W 52/04 (2013.01); H04W 52/346 (2013.01); H04W 72/0446 (2013.01); H04L 27/26025 (2021.01); H04L 27/26136 (2021.01); Y02D 30/70 (2020.08)] | 4 Claims |
1. A method of generating a broadcast signal frame, comprising:
generating a power-reduced enhanced layer signal by reducing power of an enhanced layer signal;
generating a multiplexed signal by combining a core layer signal and the power-reduced enhanced layer signal;
generating a power-reduced multiplexed signal by reducing power of the multiplexed signal;
generating a time-interleaved signal by performing time interleaving that is applied to both a core layer corresponding to the core layer signal and an enhanced layer corresponding to the enhanced layer signal; and
generating a broadcast signal frame including a bootstrap and a preamble using the time-interleaved signal,
wherein the bootstrap is located at the beginning of the broadcast signal frame and includes a symbol representing a structure of the preamble,
wherein the symbol corresponds to a fixed-length bit string representing a combination of a Layer-1 (L1)-Basic Mode, a Fast Fourier Transform size, a guard interval length and a pilot pattern of the preamble, and
the power-reduced multiplexed signal is generated corresponding to a normalizing factor which is applied to both the core layer signal and the power-reduced enhanced layer signal.
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