APPARATUS FOR INDEPENDENTLY EXTRACTING STREAM FROM HIERARCHICALLY-MODULATED SIGNAL AND PERFORMING SOFT-DECISION, AND METHOD THEREOF
PROBLEM TO BE SOLVED: To independently extract hierarchically-modulated high-priority (HP) and low-priority (LP) stream components from a hierarchically-modulated signal, to perform a soft-decision and to transmit the streams to corresponding decoders. SOLUTION: An apparatus for independent stream e...
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Format | Patent |
Language | English |
Published |
31.05.2007
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Abstract | PROBLEM TO BE SOLVED: To independently extract hierarchically-modulated high-priority (HP) and low-priority (LP) stream components from a hierarchically-modulated signal, to perform a soft-decision and to transmit the streams to corresponding decoders. SOLUTION: An apparatus for independent stream extraction and soft-decision of a hierarchically-modulated signal of the present invention includes: a signal synchronizing means for receiving a hierarchically-modulated signal (configured of an I-channel signal and a Q-channel signal) from an external device and performing a synchronizing process on the received signal; a signal divaricating means for divaricating the received signal (configured of the I-channel signal and the Q-channel signal) synchronized by the signal synchronizing means; an HP stream extracting and soft-decision means for extracting an HP stream from one of the signals divaricated by the signal divaricating means and performing a soft-decision; a calculation means for calculating the other of the received signals divaricated by the signal divaricating means to allow constellation points to be distinguished; and an LP stream extracting and soft-decision means for extracting an LP stream from the received signal calculated by the calculation means and performing a soft-decision. COPYRIGHT: (C)2007,JPO&INPIT |
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AbstractList | PROBLEM TO BE SOLVED: To independently extract hierarchically-modulated high-priority (HP) and low-priority (LP) stream components from a hierarchically-modulated signal, to perform a soft-decision and to transmit the streams to corresponding decoders. SOLUTION: An apparatus for independent stream extraction and soft-decision of a hierarchically-modulated signal of the present invention includes: a signal synchronizing means for receiving a hierarchically-modulated signal (configured of an I-channel signal and a Q-channel signal) from an external device and performing a synchronizing process on the received signal; a signal divaricating means for divaricating the received signal (configured of the I-channel signal and the Q-channel signal) synchronized by the signal synchronizing means; an HP stream extracting and soft-decision means for extracting an HP stream from one of the signals divaricated by the signal divaricating means and performing a soft-decision; a calculation means for calculating the other of the received signals divaricated by the signal divaricating means to allow constellation points to be distinguished; and an LP stream extracting and soft-decision means for extracting an LP stream from the received signal calculated by the calculation means and performing a soft-decision. COPYRIGHT: (C)2007,JPO&INPIT |
Author | KIM TAE-HOON CHOI SEUNG-HYUN CHANG DAE-IG KIM PAN-SOO OH CHEON-IN |
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Snippet | PROBLEM TO BE SOLVED: To independently extract hierarchically-modulated high-priority (HP) and low-priority (LP) stream components from a... |
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SubjectTerms | BASIC ELECTRONIC CIRCUITRY CODE CONVERSION IN GENERAL CODING DECODING ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION |
Title | APPARATUS FOR INDEPENDENTLY EXTRACTING STREAM FROM HIERARCHICALLY-MODULATED SIGNAL AND PERFORMING SOFT-DECISION, AND METHOD THEREOF |
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