Apparatus and method for sending and receiving broadcast signals
AssigneeLG Electronics Inc.
InventorsJongseob Baek, Woosuk Ko, Sungryong Hong
Life of this patent
Estimating the term…
Abstract
A broadcast signal transmitter is disclosed. A broadcast signal transmitter according to an embodiment of the present invention comprises an input formatting module performing baseband formatting and outputting at least one Physical Layer Pipe (PLP) data; a BICM module error-correction processing the PLP data; a framing & interleaving module interleaving the PLP data and generating a signal frame; and a waveform generating module inserting a preamble into the signal frame and generating a broadcast signal by performing OFDM modulation.
Claims12
A broadcast signal transmitter comprising:
- an input formatter configured to input process input data and to output at least one Physical Layer Pipe (PLP) data;
- a Bit Interleaved Coded Modulation (BICM) encoder configured to perform error correction processing on the PLP data;
- a framer configured to generate a signal frame comprising the PLP data;
- a frequency interleaver configured to frequency-interleave data comprised in the signal frame;
- and
- a waveform generator configured to Orthogonal Frequency Division Multiplexing (OFDM)-modulate the signal frame,
- wherein the signal frame comprises a preamble and at least one subframe,
- wherein the frequency interleaver frequency-interleaves the preamble and optionally frequency-interleaves the at least one subframe, and
- wherein when the frequency interleaver frequency-interleaves the at least one subframe, a symbol offset generator comprised in the frequency interleaver is reset on a first symbol of each subframe except a first subframe.
A method for transmitting a broadcast signal, comprising:
- input processing input data and outputting at least one Physical Layer Pipe (PLP) data;
- error-correction processing the PLP data;
- generating a signal frame comprising the PLP data;
- frequency interleaving data comprised in the signal frame;
- and
- Orthogonal Frequency Division Multiplexing (OFDM) modulating the signal frame,
- wherein the signal frame comprises a preamble and at least one subframe,
- wherein the frequency interleaving is performed on the preamble and the frequency interleaving is performed on the at least one subframe, and
- wherein the frequency interleaving further comprises symbol offset generating, and when the at least one subframe is frequency-interleaved, the symbol offset generating is reset on a first symbol of each subframe except a first subframe.
Dependencies are inferred from the claim text.