| 摘要 |
<p>A method for transmitting broadcast signals, the method comprising, Bit Interleaved Coded Modulation, BICM, encoding Physical Layer Pipe, PLP data, wherein the BICM encoding further includes, Multi Input Multi Output, MIMO, processing the PLP data by using a MIMO matrix, building first and second frames including the BICM encoded PLP data and modulating the first and second frames and inserting a P1 symbol and an AP1 symbol into each of the first and second frames to output first and second broadcast signals, wherein the each of the first and second frames includes a preamble comprising the P1 symbol, the AP1 symbol and at least one P2 symbol, wherein the P1 symbol carries S1 and S2 fields and is located in the beginning of each of the first and second frames and the AP1 symbol carries S3 and S4 fields and is located right after the P1 symbol, wherein the S1 field indicates whether a type of the preamble is an extended type or not and the S2 filed indicates a preamble format for the extended type, wherein the preamble format is one of a preamble format of MIMO signal, a preamble format of Hybrid SISO signal, a preamble format of Hybrid MISO signal and a preamble format of Hybrid MIMO signal, wherein the S3 field indicates a type of a waveform used for modulating the Hybrid MIMO signal and the S4 field indicates a corresponding fast Fourier transform, FFT, size and guard interval for the waveform.</p> |
