Qualcomm Incorporated

Shiou-Hung Chen

Emilija Milorad Simic

Rayman Wai Pon

Douglas Grover

Douglas Neal Rowitch

Dominic Gerard Farmer

Grant Alexander Marshall

The subject matter disclosed herein relates to a system and method for processing a signal received from a satellite positioning system (SPS) in the presence of a multi-tone jammer. In one particular implementation, processing of a signal may be altered in response to detection of one or more conditions.

System and/or method for detecting multi-tone jamming

An apparatus and method for short multipath mitigation. In one aspect the method comprises subtracting a first stronger path from a correlation function to obtain a first residual signal, wherein one component of the first residual signal is a weaker path; applying reconstruction on the first residual signal to obtain a first reconstructed weaker path; subtracting the first reconstructed weaker path from the correlation function to obtain a second residual signal; and applying reconstruction on the second residual signal to obtain a second stronger path. In one aspect, the apparatus includes an antenna for receiving a composite receive RF signal, a receiver front-end for converting the composite receive RF signal into a composite receive digital signal; and a processor for performing signal correlation on the composite receive digital signal to obtain a correlation function and for processing the correlation function to obtain a desired signal. In one aspect, the short multipath is identified by computing a Left Edge Height Ratio Indicator (LEHRI).

Method and apparatus for multipath mitigation

Methods and apparatuses are provided that may be implemented in various electronic devices and/or circuits to identify and mitigate to some extent various known and unknown interference signals that may appear in a received signal.

Methods and apparatuses for identifying and mitigating interference in a wireless signal

Methods and apparatus are provided for use in devices operatively enabled to perform waveform correlation result processing.

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San Diego, CA, United States of America

Shiou-Hung Chen