Title:
受信装置及び受信方法
Document Type and Number:
Japanese Patent JP7001070
Kind Code:
B2
Abstract:
A receiver detects and recovers payload data from a received signal. The receiver comprises a radio frequency demodulation circuit configured to detect and to recover the received signal, the received signal having been formed and transmitted by a transmitter to carry the payload data from a plurality of different channels as Orthogonal Frequency Division Multiplexed (OFDM) symbols in one or more of a plurality of transmission frames, each of the transmission frames comprising a frame synchronisation OFDM symbol, followed by one or more primary signalling OFDM symbols, then one or more secondary signalling OFDM symbols followed by one or more payload OFDM symbols. The frame synchronisation OFDM symbol and the one or more primary signalling OFDM symbols have been modulated with a signature sequence, the signature sequence of the one or more primary signalling OFDM symbols having been cyclically shifted with respect to each of a preceding one of the frequency synchronisation OFDM symbol or the one or more primary signalling OFDM symbols, with the cyclical shift primary signalling data carried in the one or more primary signalling OFDM symbols. The receiver further comprises a Fourier transformer configured to convert successively a temporal length of a useful part each of the frequency synchronisation OFDM symbol and the one or more primary signalling OFDM symbols into the frequency domain, a multiplier configured to receive each of the frequency domain samples of a current one of the primary signalling OFDM symbols and to multiply each sample with the conjugate of a corresponding sample of one of the frame synchronisation OFDM symbols or one of the one or more primary signalling OFDM symbols immediately preceding the current one of the primary signalling OFDM symbols to produce for each sub-carrier sample an intermediate sample, an inverse Fourier transformer configured to convert the intermediate samples resulting from the current one of the primary OFDM symbols into the time domain, and a cyclic shift detector configured to estimate the primary signalling data conveyed by each of the one or more primary signalling OFDM symbols by detecting a cyclic shift of the signature sequence present in each of the one or more primary signalling OFDM symbols from a peak of the time domain intermediate samples.
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Inventors:
Atsung Siri Samuel Asan Beng
Application Number:
JP2018567157A
Publication Date:
January 19, 2022
Filing Date:
May 12, 2017
Export Citation:
Assignee:
Sony Group Corporation
International Classes:
H04L27/26
Foreign References:
| US20150256375 | ||||
| US20150180537 | ||||
| US20130039303 | ||||
| WO2016075476A1 | ||||
| WO2014155104A1 |
Other References:
Zhen Gao(他2名),Robust Preamble Design for Synchronization, Signaling Transmission, and Channel Estimation,IEEE Transactions on Broadcasting,2015年01月06日,VOL.61, NO.1,pp.98-104
Dazhi He(他5名),System Discovery and Signaling Transmission Using Bootstrap in ATSC 3.0,IEEE Transactions on Broadcasting,2016年01月29日,VOL.62, NO.1,pp.172-180
Dazhi He(他5名),System Discovery and Signaling Transmission Using Bootstrap in ATSC 3.0,IEEE Transactions on Broadcasting,2016年01月29日,VOL.62, NO.1,pp.172-180
Attorney, Agent or Firm:
Patent Business Corporation Minami Aoyama International Patent Office
Junichi Omori
Teppei Nakamura
Akira Orii
Ayako Kaneko
Junichi Omori
Teppei Nakamura
Akira Orii
Ayako Kaneko