Apparatus and method for sending and receiving broadcast signals
AssigneeLG Electronics Inc.
InventorsJaehyung Kim, Woosuk Ko, Sungryong Hong
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Abstract
Disclosed herein is a broadcast signal receiver. The broadcast signal receiver according to an embodiment of the present invention includes a synchronization and demodulation module configured to perform detection and OFDM demodulation on a received broadcast signal, a frame parsing and deinterleaving module configured to parse and deinterleave the signal frame of the broadcast signal, a demapping and decoding module configured to convert the data of at least one Physical Layer Pipe (PLP) of the broadcast signal into a bit domain and to FEC-decode the PLP data, and an output processing module configured to receive the data of the at least one PLP and to output the received data in a data stream form.
Claims18
A broadcast signal receiver, comprising:
- a tuner to receive a broadcast signal including a signal frame that comprise a preamble and at least one subframe,
- wherein the subframe comprises data symbols and at least one Subframe Boundary Symbol (SBS), the data symbols comprising Scattered Pilots (SPs), and the SBS comprises data cells and subframe boundary pilots;
- a demodulator to demodulate the broadcast signal by detecting pilots from the broadcast signal;
- a de-framer to de-frame the signal frame of the broadcast signal and to extract Physical Layer Pipe (PLP) data,
- wherein the data cells of the SBS comprise active data cells and null cells,
- each set including a half of the null cells is at each band edge and the active data cells are positioned between two sets of the null cells within data carrier indices of the data cells,
- a number of the active data cells of the SBS for an Fast Fourier Transform (FFT) size and a coefficient value used to obtain a number of carrier is determined based on amplitude of the scattered pilots that are determined from a SP boosting parameter for a boosted power level of the SP and an SP pattern;
- a de-interleaver configured to bit de-interleave the PLP data;
- and
- a decoder configured to decode the PLP data.
A method for receiving a broadcast signal, comprising:
- receiving a broadcast signal including a signal frame that comprise a preamble and at least one subframe,
- wherein the subframe comprises data symbols and at least one Subframe Boundary Symbol (SBS), the data symbols comprising Scattered Pilots (SPs), and the SBS comprises data cells and subframe boundary pilots;
- demodulating the broadcast signal by detecting pilots from the broadcast signal;
- de-framing the signal frame of the broadcast signal and extracting Physical Layer Pipe (PLP) data,
- wherein the data cells of the SBS comprise active data cells and null cells,
- each set including a half of the null cells is at each band edge and the active data cells are positioned between two sets of the null cells within data carrier indices of the data cells,
- a number of the active data cells of the SBS for an Fast Fourier Transform (FFT) size and a coefficient value used to obtain a number of carrier is determined based on amplitude of the scattered pilots that are determined from a SP boosting parameter for a boosted power level of the SP and an SP pattern;
- bit de-interleaving the PLP data;
- and
- decoding the PLP data.
Dependencies are inferred from the claim text.