Qualcomm Incorporated

Douglas Grover

Emilija Milorad Simic

Matthew Stuart Grob

Gene Wesley Marsh

Dominic Gerard Farmer

Brian K Butler

Franklin Peter Antonio

Leonard N Schiff

Richard Alan Stewart

William G Ames

James T Determan

Shiou-Hung Chen

Ananthanarayanan Chockalingam

Marie M Bjerede

Arthur S Kerns

Douglas Neal Rowitch

Ashok Bhatia

Christopher Patrick

Cristina A Seibert

Rizwan Ehtesham Ahmed

Chang Shik Row

Kai Tang

Arie Rahmat

In a radio frequency (RF) receiver, a receiver RF chain is tuned to a first (e.g., global positioning system (GPS)) channel to permit receipt of a first (e.g., GPS) signal over the first (e.g., GPS) channel on the receiver RF chain during a first time duration. The receiver RF chain is tuned to a second (e.g., cellular page) channel to permit receipt of a second (e.g., cellular page) signal over the second (e.g., cellular page) channel on the receiver RF chain during a second time duration, following the first time duration. The first (e.g., GPS) signal is processed during the first time duration and the second time duration, without any apparent interruption of the first (e.g., GPS) signal during the second time duration. The processing, for example, provides a bridge signal (e.g., an estimated GPS signal on the receiver RF chain) during the second time duration.

Radio frequency (RF) signal multiplexing

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

Apparatus and methods of implementing code space search of received signals are described herein. A code space search is implemented as a searcher that perform a subtask that is dynamically reconfigurable at each boundary of an initial integration time. Each particular subtask sets forth a programmable configuration of coherent integration hypothesis that are performed during the initial integration time. The searcher stores the results of the coherent integration hypothesis in a first portion of memory. A search accelerator operates on the initial integration results. The search accelerator can perform coherent integration of various frequency bins of different timing hypothesis, can generate energy values of the coherent integration results, and can generate a non-coherent energy summation. The energy values of the coherent integrations and non-coherent energy summations are stored in a second portion of memory. The ability to reconfigure the subtasks and accelerator operation provides flexibility in search space dimensions.

Method and apparatus for code space search in a receiver

Methods and apparatus are provided for use in devices adapted to receive signals from at least one satellite positioning system (SPS). As part of at least one search for a transmission from a space vehicle (SV) associated with the SPS, the methods and apparatuses may correlate a code associated with the SV with a received signal to establish a plurality of correlation values, sample at least a portion of the correlation values during the search, and selectively transitioning the search early or prematurely based, at least in part, on at least one of the sampled correlation values.

Methods and apparatuses for processing satellite positioning system signals

A circuit to detect position signals in a mobile station includes a general-purpose processor to generate instructions for execution of at least one signal detection algorithm and to carry out at least one other function not associated with the signal detection algorithm, special-purpose hardware blocks responsive to the instructions of the general-purpose processor to execute the at least one signal detection algorithm, and at least one of the general-purpose processor and the special-purpose hardware blocks configured to execute at least one efficiency process to optimize performance of the at least one signal detection algorithm. Methods and machine-readable medium implementing the method steps are also disclosed.

Processor generating control signals including detection duration for satellite positioning system ranging signal detection circuit

A method for reducing call dropping rates in a multi-beam communication system. The multi-beam communication system includes a user terminal, a gateway, and a plurality of beam sources, where each beam source projects a plurality of beams, and where a communication link between the user terminal and the gateway is established on one or more beams. The method according to the present invention relies on a messaging protocol between the gateway and the user terminal. Based on messages sent from the user terminal to the gateway, preferably on a preselected periodic basis, the gateway can determine the more desirable beam(s) for transmitting data or information to the user terminal. The messages sent from the user terminal to the gateway contain values representing beam strengths as measured at the user terminal. The gateway uses the user terminal measured beam strengths to select the beams that should be used for transmitting data or information to the user terminal. The beams that should be used are the beams that if used will decrease the call dropping rates and provide a desired level of beam source diversity.

System and method for reducing call dropping rates in a multi-beam communication system

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San Diego, CA, United States of America

Douglas Grover