System for Compensating Turbodecoder Phase Shift
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United States of America Patent
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Issued Date -
Mar 20, 2008
app pub date -
Jun 1, 2005
filing date -
Jun 10, 2004
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A turbocode receiver system of a signal emitted by a turbo-coded modulated transmitter system, includes: a soft demapper (1) the output of which is connected to a turbodecoder (2), and an adaptive locked loop including: a measurement generator (3) the input of which is connected to the turbodecoder output to receive the reliability vector (LLR.sub.out) of the result and adapted to transform the vector into a reliability measurement (M(I)), equal to the average of the lowest reliability values of word bits, transmitted to a phase shift estimator (4) the output of which is connected to a phase compensator (5) positioned upstream of the soft demapper and adapted to correct the incoming signal of the phase value .phi..
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