TERMINAL MOVING SPEED ESTIMATION METHOD USING DOPPLER SPECTRUM

WIPO Patent Application WO/2017/163988

A1

Provided is a moving speed estimation method that detects and omits Doppler spectrum components that are from peripheral moving scatterers. A moving speed estimation method that includes: a step for calculating a Doppler spectrum; a step for setting a prescribed number of threshold values at regular intervals between a peak power and a noise power; a step for calculating spectrum widths from the difference between the maximum and minimum frequencies for the threshold values; a step for making the spectrum width for the highest threshold value be a first Doppler spectrum width candidate; a step for making the spectrum widths for the threshold values for which the difference between the spectrum width thereof and the first Doppler spectrum width candidate is at or below a frequency difference threshold value be second Doppler spectrum width candidates; a step for determining the second Doppler spectrum width candidate for the lowest threshold value to be a Doppler spectrum width; a step for calculating a maximum Doppler frequency from the Doppler spectrum width; and a step for determining a terminal moving speed from the maximum Doppler frequency.

MAITI SOURABH (JP)
FUJII TERUYA (JP)

PCT/JP2017/010027

September 28, 2017

March 13, 2017

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SOFTBANK CORP (JP)

G01S11/10

JP2016130692A	2016-07-21
US20050267370A1	2005-12-01

SOURABH MAITI ET AL.: "An Investigation on Velocity Estimation of Mobile Terminal for Cellular Mobile Radio Communication Systems", IEICE TECHNICAL REPORT, vol. 114, no. 395, 15 January 2015 (2015-01-15), pages 31 - 36

AOKI, Atsushi et al. (JP)

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