U-blox Ag

Roberto Rinaldo

Christopher Brian Marshall

Marco Driusso

Alessandro Biason

Alessandro Pin

Matteo Noschese

Fulvio Babich

A method and apparatus are provided for estimating characteristic differences between wireless signals transmitted from the same location in spaced apart frequency ranges. Also provided are a method and apparatus for estimating a combined time of arrival of the wireless signals, using the characteristic differences. A further method is provided, for identifying that two signals have been transmitted from the same location. Also disclosed is a method of maintaining a database of characteristic difference information.

Estimating and using characteristic differences between wireless signals

Disclosed are Methods and apparatuses for estimating one or more characteristics of the communications channel. The method comprises receiving a first wireless signal transmitted by a transmitter at a first set of frequencies in a first time slot; and receiving a second wireless signal transmitted by the transmitter at a second set of frequencies in a second time slot. The second set of frequencies partially overlaps with the first set of frequencies and the second time slot is different from the first time slot. The method further comprises jointly processing the first wireless signal and the second wireless signal to estimate the one or more characteristics of the communications channel. Corresponding apparatuses are configured to implement the methods.

Estimating one or more characteristics of a communications channel

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Udine, Italy

Roberto Rinaldo