Apparatus for transmitting broadcast signals, apparatus for receiving broadcast signals, method for transmitting broadcast signals and method for receiving broadcast signals
US-2016373213-A1 · Dec 22, 2016 · US
Apparatus for transmitting broadcast signals, apparatus for receiving broadcast signals, method for transmitting broadcast signals and method for receiving broadcast signals
US9667461B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9667461-B2 |
| Application number | US-201514863899-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 24, 2015 |
| Priority date | Feb 6, 2015 |
| Publication date | May 30, 2017 |
| Grant date | May 30, 2017 |
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Abstract
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A method and an apparatus for receiving broadcast signals thereof are disclosed. The apparatus for receiving broadcast signals, the apparatus comprises a receiver to receive the broadcast signals, a demodulator to perform demodulation on the received broadcast signals by an OFDM (Orthogonal Frequency Division Multiplex) scheme, a frequency de-interleaver to frequency de-interleave the demodulated broadcast signals by using a different interleaving sequence, wherein the different interleaving sequence is used for data corresponding to an OFDM symbol pair or data corresponding to an OFDM symbol according to an FFT size of the demodulation, a frame parser to parse at least one signal frame from the frequency de-interleaved broadcast signals and a decoder to decode service data in the parsed at least one signal frame.
First claim
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What is claimed is: 1. A method for receiving broadcast signals, the method comprising: receiving the broadcast signals; demodulating the received broadcast signals by an OFDM (Orthogonal Frequency Division Multiplex) scheme; frequency de-interleaving the demodulated broadcast signals by using a different interleaving sequence, wherein the different interleaving sequence is used for data corresponding to an OFDM symbol pair or data corresponding to an OFDM symbol according to an FFT size of the demodulating; parsing at least one signal frame from the frequency de-interleaved broadcast signals; and decoding service data in the parsed at least one signal frame, wherein the FFT size is one of 8K, 16K and 32K, wherein after the different interleaving sequence is generated based on a toggle bit, a basic interleaving sequence, and a symbol offset, it is checked whether or not an address of the interleaving sequence is within a range of an OFDM symbol, and wherein when the FFT size is 32K, a single permutation is applied to the basic interleaving sequence and when the FFT size is 8K or 16K, different permutations are applied to the basic interleaving sequence. 2. An apparatus for receiving broadcast signals, the apparatus comprising: a receiver to receive the broadcast signals; a demodulator to perform demodulation on the received broadcast signals by an OFDM (Orthogonal Frequency Division Multiplex) scheme; a frequency de-interleaver to frequency de-interleave the demodulated broadcast signals by using a different interleaving sequence, wherein the different interleaving sequence is used for data corresponding to an OFDM symbol pair or data corresponding to an OFDM symbol according to an FFT size of the demodulation; a frame parser to parse at least one signal frame from the frequency de-interleaved broadcast signals; and a decoder to decode service data in the parsed at least one signal frame, wherein the FFT size is one of 8K, 16K and 32K, wherein after the different interleaving sequence is generated based on a toggle bit, a basic interleaving sequence, and a symbol offset, it is checked whether or not an address of the interleaving sequence is within a range of an OFDM symbol, and when the FFT size is 32K, a single permutation is applied to the basic interleaving sequence and when the FFT size is 8K or 16K, different permutations are applied to the basic interleaving sequence.
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Classifications
Point-to-multipoint · CPC title
Arrangements at the receiver end · CPC title
Arrangements at the transmitter end · CPC title
the frequencies being orthogonal, e.g. OFDM(A) or DMT · CPC title
with direct modulation of individual subcarriers · CPC title
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- What does patent US9667461B2 cover?
- A method and an apparatus for receiving broadcast signals thereof are disclosed. The apparatus for receiving broadcast signals, the apparatus comprises a receiver to receive the broadcast signals, a demodulator to perform demodulation on the received broadcast signals by an OFDM (Orthogonal Frequency Division Multiplex) scheme, a frequency de-interleaver to frequency de-interleave the demodulat…
- Who is the assignee on this patent?
- Lg Electronics Inc
- What technology area does this patent fall under?
- Primary CPC classification H04L27/2608. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue May 30 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).