Apparatus for transmitting broadcast signals, apparatus for receiving broadcast, signals, method for transmitting broadcast signals and method for receiving broadcast signals
US9210022B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 24, 2014 |
| Grant date | Dec 8, 2015 |
| Priority date | — |
| Expiry date | Nov 24, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2647
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and an apparatus for transmitting broadcast signals thereof are disclosed. The apparatus for transmitting broadcast signals comprises an encoder encoding service data, a time interleaver interleaving the encoded service data, a mapper mapping the interleaved service data into a plurality of OFDM (Orthogonal Frequency Division Multiplex) symbols to build at least one signal frame, a frequency interleaver interleaving data in the at least one signal frame by using a different interleaving-seed which is used for every OFDM symbol pair comprised of two sequential OFDM symbols, wherein the frequency interleaver calculates an interleaving address for the different interleaving-seed based on a main-PRBS sequence and a cyclic shifting value, a modulator modulating the frequency interleaved data by an OFDM scheme and a transmitter transmitting the broadcast signals having the modulated data, wherein an interleaving-seed is generated based on a cyclic shift value and an FFT size of the modulating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.