Apparatus and method for estimating a velocity of a mobile...

Details Apparatus and method for estimating a velocity of a mobile... Apparatus and method for estimating a velocity of a mobile...

2007-11-20

2007-11-20

Sobutka, Philip J. (Department: 2618)

Telecommunications

Transmitter and receiver at separate stations

Optimum frequency selection

C455S063100, C455S067110, C455S266000, C455S561000

Reexamination Certificate

active

10941092

ABSTRACT:
Apparatus and method are provided in a BS (Base Station) apparatus of a mobile communication system including a velocity estimator for estimating a velocity of a mobile station (MS) and a channel estimator for performing channel estimation using a plurality of channel estimation coefficients according to a control signal of the velocity estimator. The apparatus and method comprise estimating reception performance of individual channel estimation coefficients of the channel estimator, and selecting boundary frequencies of a plurality of Doppler frequency bands corresponding to a channel estimation coefficient having the best reception performance; measuring a power spectrum associated with a minimum number of frequency indexes capable of classifying the plurality of Doppler frequency bands; and controlling a detection position such that a Doppler frequency boundary value measured when a weight value is applied to the measured power spectrum approximates a desired Doppler frequency boundary value.

REFERENCES:
patent: 6377813 (2002-04-01), Kansakoski et al.
patent: 2002/0042279 (2002-04-01), Da Rocha et al.
patent: 2002/0044593 (2002-04-01), Kuo

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