Joint synchronizer and decoder
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United States of America Patent
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Sep 22, 2009
Grant Date -
Mar 17, 2005
app pub date -
Sep 10, 2004
filing date -
Sep 12, 2003
priority date (Note) -
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status (Latency Note)
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Abstract
A joint synchronizer and decoder that implements two decision aided processes, which are referred to as “decision aided candidate selection” and “decision aided synchronization and decoding.” Decision aided candidate selection may be used to select a carrier frequency offset by selecting among a number of candidates for this parameter based on an indication of decoding success. Decision aided synchronization and decoding may be used for phase tracking based on an indication of decoding success. Although these joint synchronizing and decoding techniques may be implemented together, they may also be implemented independently. The joint synchronizer and decoder may be implemented within a return channel receiver in a DVB-RCS system using turbo coding and quadrature phase shift key (QPSK) data modulation.
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