Qualcomm Incorporated

Telefonaktiebolaget Lm Ericsson (publ)

Bruce S Schwartz

Brian K Harms

Anthony C K Soong

Todd A Pressley

Lindsay A Weaver, Jr

Thomas J Funk

Larry D Flowers

David Purdy

Robin Night

Kate Jennings Lainson

Anthony Chak Keung Soong

Robin D Knight

Lindsay A Weaver

Anthony C Soong

Larry D c/o Qualcomm Incorporated Flowers

The invention is a CDMA transmission control technology that includes various combinations of the following functionality: decresting, in-band to out-of-band ratio (RIO), power control, and spectral shaping. Decresting reduces peaks in the CDMA signal. RIO generates a ratio based on the signal strength of in-band versus out-of-band portions of the CDMA signal. Power control adjusts the gain of the CDMA signal based on quadrature signal calculations. Spectral shaping attenuates in-band portions of the CDMA signal adjacent to the corner frequencies. The CDMA transmission control technology can be implemented in a CDMA base station to extend range and capacity.

CDMA signal transmission control

An oscillating circuit ( ) includes a quartz crystal oscillator ( ) for generating a clock signal ( ). The clock signal is synchronized to a master signal ( ) during the lock-in periods when the oscillating circuit ( ) has access to the master signal ( ). During the holdover periods when the oscillating circuit ( ) loses access to the master signal ( ), an oscillation frequency function predicts the crystal oscillation frequency in terms the physical parameters, e.g., time and temperature, that may affect the crystal oscillation frequency. The predicted frequency is compared with a standard frequency to generate an error signal. In response to the error signal, a fraction handler block ( ) determines whether adding cycles to or deleting cycles from the clock signal, thereby calibrating the oscillation signal ( ) of the oscillating circuit ( ).

Oscillating circuit and method for calibrating same

The invention is CDMA quadrature signal technology that controls the transmit power of a CDMA signal. The CDMA quadrature signal technology receives a CDMA signal, and in response, process quadrature components of the CDMA signal to generate a power control signal. The CDMA quadrature signal technology adjusts the gain of the CDMA signal in response to the power control signal. A CDMA transmitter transmits the CDMA signal after the gain is adjusted. One example of the CDMA transmitter is a CDMA base station. Using the invention, a multi-sector CDMA base station can control power without transferring gain information to base station components for all sectors. The invention eliminates unnecessary data transfer and storage.

CDMA signal power control using quadrature signal calculations

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Boulder, CO, United States of America

Bruce S Schwartz