Phase estimation and compensation in orthogonal frequency...

Details Phase estimation and compensation in orthogonal frequency... Phase estimation and compensation in orthogonal frequency...

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.

REFERENCES:
patent: 6347126 (2002-02-01), Nagayasu et al.
patent: 7020222 (2006-03-01), Magee
patent: 2002/0057753 (2002-05-01), Sanchez et al.
patent: 2003/0081695 (2003-05-01), Eilts et al.
patent: 2003/0086508 (2003-05-01), Magee
patent: 0959568 (1999-11-01), None
Robertson, Patrick et al; Analysis of the Effects of Phase-Noise in Orthogonal Frequency Division Multiplex (OFDM) System.

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