Apparatus and Method for Sending and Receiving Broadcast Signals
AssigneeLG Electronics Inc.
InventorsJaehyung KIM, Woosuk KO, Chulkyu MUN, Sungryong HONG
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Abstract
A broadcast signal receiver is disclosed. A broadcast signal receiver according to an embodiment of the present invention comprises a synchronization & demodulation module performing signal detection and OFDM demodulation on a received broadcast signal; a frame parsing & deinterleaving module performing parsing and deinterleaving of a signal frame of the broadcast signal; a demapping & decoding module performing conversion of data of at least one Physical Layer Pipe (PLP) of the broadcast signal into the bit domain and FEC decoding of the converted PLP data; and an output processing module outputting a data stream by receiving the at least one PLP data.
Claims11
-12. (canceled)
A broadcast signal receiver, comprising:
- a demodulator configured to Orthogonal Frequency Divisional Multiplexing, OFDM, demodulate a received broadcast signal;
- a frame parser configured to parse a signal frame of the broadcast signal;
- a time de-interleaver configured to time de-interleave Physical Layer Pipe, PLP, data of the signal frame,
- a decoder configured to Forward Error Correction, FEC, decode the time de-interleaved PLP data;
- and
- an output processor configured to process the decoded PLP data and to output a data stream,
- wherein the signal frame comprises a preamble and a plurality of subframes,
- wherein a first symbol or a last symbol of the subframe is optionally configured as the subframe boundary symbol and the subframe boundary symbol has a greater scattered pilot (SP) density than data symbols of the subframe, and
- wherein a first symbol of a first subframe is the subframe boundary symbol when the first subframe is immediately preceded by a second subframe and FFT sizes of the first subframe and the second subframe are different from each other, and
- wherein a last symbol of the first subframe is the subframe boundary symbol when the first subframe is immediately followed by a third subframe and FFT sizes of the first subframe and the third subframe are different from each other.
A method of receiving a broadcast signal, comprising:
- Orthogonal Frequency Divisional Multiplexing, OFDM, demodulating a received broadcast signal;
- parsing a signal frame of the broadcast signal;
- time de-interleaving Physical Layer Pipe, PLP, data of the signal frame,
- Forward Error Correction, FEC, decoding the time de-interleaved PLP data;
- and
- processing the decoded PLP data and to output a data stream,
- wherein the signal frame comprises a preamble and a plurality of subframes,
- wherein a first symbol or a last symbol of the subframe is optionally configured as the subframe boundary symbol and the subframe boundary symbol has a greater scattered pilot (SP) density than data symbols of the subframe, and
- wherein a first symbol of a first subframe is the subframe boundary symbol when the first subframe is immediately preceded by a second subframe and FFT sizes of the first subframe and the second subframe are different from each other, and
- wherein a last symbol of the first subframe is the subframe boundary symbol when the first subframe is immediately followed by a third subframe and FFT sizes of the first subframe and the third subframe are different from each other.
Dependencies are inferred from the claim text.