Method and apparatus for bounded time delay estimation

Details Method and apparatus for bounded time delay estimation Method and apparatus for bounded time delay estimation

2011-08-09

2011-08-09

Liu, Harry (Department: 3662)

Communications: directive radio wave systems and devices (e.g.,

Directive

Position indicating

Reexamination Certificate

active

07994982

ABSTRACT:
A method and apparatus for estimating the position of a mobile device in a multi-path environment. In one example, the method includes receiving a plurality of reference signals from a corresponding plurality of reference devices, for each reference signal, calculating expected time delay boundaries, for each reference signal, estimating a range between the device and the corresponding reference device based on a measured time delay of the reference signal falling within calculated time delay boundaries to produce a plurality of range estimates, and filtering the plurality of range estimates to generate a composite estimate of the position of the device.

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