Pulse or digital communications – Receivers – Particular pulse demodulator or detector
Reexamination Certificate
2007-02-20
2007-02-20
Ghayour, Mohammed (Department: 2611)
Pulse or digital communications
Receivers
Particular pulse demodulator or detector
C375S226000, C375S345000
Reexamination Certificate
active
10172557
ABSTRACT:
Methods are presented for phase estimation and compensation in Orthogonal Frequency Division Multiplex systems. The methods include the step of extracting training tones from a received digitized data burst. Some of the methods further include the steps of determining a channel impulse response based on the extracted tones; estimating phase shift caused by common phase noise; correcting the impulse response and performing a Fast Fourier transform to provide a channel estimate. Some of the methods include estimating the phase shift caused by common phase noise before an average impulse response is updated with the current impulse impulse. Some of the methods include frequency shifting the spectrum of the channel impulse response and providing partial estimates.
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Eilts Henry Stephen
Hosur Srinath
Magee David Patrick
Brady W. James
Ghayour Mohammed
Shaw Steven A.
Telecky , Jr. Frederick J.
Texas Instruments Incorporated
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