Motorola Corporation

Viasat, Inc.

Motorola Solutions, Inc.

Bobby D Anderson, Ii

Jose E Korneluk

Keith M Klug

Kristi A Haverkamp

Charles H Segerson

Charles Burton Swope

Dean Lawrence Cook

Konrad Miehle

Nereydo T Contreras

David E Pettit

The present disclosure, for example, relates to one or more techniques for linearizing a signal in a communications system. An input signal may be obtained at a beginning of a signal path of a radio frequency (RF) communication device. The RF communication device may estimate subsequent distortion of the input signal due to the signal path. The estimated distortion may include estimated phase distortion and estimated amplitude distortion of the input signal. The RF communication device may adjust phase and amplitude within the signal path to compensate for the estimated phase distortion and the estimated amplitude distortion to produce an adjusted signal. The phase within the signal path of the input signal may be adjusted separately from the amplitude within the signal path of the input signal. The RF communication device may generate a linearized signal at an end of the signal path based at least in part on the adjusted signal.

Techniques for linearizing phase independently of amplitude in a communications system

A mobile communication device () and peer mobile communication devices () are capable of direct voice and data communication. The mobile communication device has a reference oscillator () which is used for generating operating frequencies, and is subject to frequency errors resulting from manufacturing tolerances, heat, and other error sources. The mobile communication device receives a frequency correction message () from a peer mobile communication device that has calibrated its reference oscillator. The frequency correction message contain offset information which is used by the mobile communication device to determine its offset () from a nominal frequency ().

Method and apparatus for providing reference frequency aiding among peers operating in a direct communication mode

A mobile communication device () outside the service area of a communications networkin need of satellite positioning assistance information to perform a location determination (). The mobile communication device receives the assistance information from a peer mobile communication device () over a direct link.

Method for providing location aiding among peers operating in a direct communication mode

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Gilbert, AZ, United States of America

Bobby D Anderson, Ii