Estimation of doppler shift compensation in a mobile...

Details Estimation of doppler shift compensation in a mobile... Estimation of doppler shift compensation in a mobile...

2006-03-14

2006-03-14

Vo, Don N. (Department: 2631)

Pulse or digital communications

Receivers

Particular pulse demodulator or detector

C375S346000

Reexamination Certificate

active

07012973

ABSTRACT:
A system and method for estimating Doppler shift compensation in a mobile communication system is described. A channel impulse response determination circuit determines a channel impulse response for the channel on which the signal is received. A reference vector is generated using a set of known symbols and the channel impulse response, and an error vector is then generated by comparing the reference vector with received samples of the signal. In addition, the noise variance of the incoming signal can be determined. Then, a Doppler correction factor is estimated having a real part representing amplitude correction and an imaginary part representing phase correction.

REFERENCES:
patent: 5488635 (1996-01-01), Chennakeshu et al.
patent: 5867538 (1999-02-01), Liu
patent: 0534399 (1993-03-01), None
patent: 0731587 (1996-09-01), None
patent: WO98/34357 (1998-08-01), None

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