Method and apparatus for estimating the doppler frequency of...

Details Method and apparatus for estimating the doppler frequency of... Method and apparatus for estimating the doppler frequency of...

H - Electricity

04

B

H04B 17/00 (2006.01) G01S 11/10 (2006.01) H04B 7/26 (2006.01) H04Q 7/38 (2006.01)

Patent

CA 2089090

ABSTRACT OF THE DISCLOSURE A method and apparatus for approximating the doppler frequency of a mobile station (M1-M9) by examining the signal between the mobile station (M1-M9) and a base station (B1- B10). Several channel estimates (hj(n)) are calculated at different intervals (t1, t2) for the signal between the mobile station (M1-M9) and the base station (B1-B10). The difference (Vj(n)) between these channels estimates (hj(n)) is used to determine the approximate doppler frequency of the mobile station (M1-M9). A cellular mobile radio system can use the doppler frequency of the mobile station (M1-M9) to prioritize a handoff queue or to select an appropriate detecting algorithm for detecting data in a received signal (r(t)).

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