Brian K Harms

US Patent:

6370109, Apr 9, 2002

Filed:

Mar 10, 1999

Appl. No.:

09/265205

Inventors:

Bruce S. Schwartz - Boulder CO
Brian K. Harms - Boulder CO
Anthony C. K. Soong - Superior CO
Todd A. Pressley - Superior CO
Robin D. Knight - Loveland CO

Assignee:

Qualcomm Incorporated - San Diego CA

International Classification:

H04B 7216

US Classification:

370203, 370335, 370342, 375146, 375297, 455115, 455450, 455522

Abstract:

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.

US Patent:

6430169, Aug 6, 2002

Filed:

Mar 10, 1999

Appl. No.:

09/265202

Inventors:

Brian K. Harms - Boulder CO
Anthony C. K. Soong - Superior CO
Thomas J. Funk - Lafayette CO
Larry D. Flowers - Broomfield CO

Assignee:

Qualcomm Incorporated - San Diego CA

International Classification:

H04B 7216

US Classification:

370335, 370342, 375146, 375297, 455450

Abstract:

The invention is a CDMA spectral shaping technology that attenuates the out-of-band signal power in the CDMA signal. The in-band CDMA signal is attenuated near the corner frequencies to reduce components that provide a disproportionate contribution to the out-of-band signal power. The power amplifier in the CDMA base station can then operate at higher power levels without exceeding out-of-band signal power limitations. As a result, the power amplifier operates more efficiently and extends the range or capacity of the base station. In some examples of the invention, spectral shaping digital filters are placed between the cell site modem and the digital-to-analog converter in the base station. In other examples of the invention, spectral shaping analog filters are placed between the digital-to-analog converter and the low-pass filter in the base station.

US Patent:

6493376, Dec 10, 2002

Filed:

Oct 9, 1998

Appl. No.:

09/169358

Inventors:

Brian Harms - Boulder CO
Brian Butler - La Jolla CA
Gordon Skinner - late of Boulder CO

Assignee:

Qualcomm, Inc. - San Diego CA

International Classification:

H04B 1500

US Classification:

375130

Abstract:

A technique for spreading information signals in a spread spectrum communication system to provide increased signal acquisition speed. A first PN spreading code or code set is used to spread information signals along with a second PN spreading code sequence or function. The second PN code is synchronized with the first PN spreading code, but has a larger code period so that each code chip of the second PN code extends over the entire period of the first PN code. The longer period spreading code forms an outer code which helps provide unambiguous beam identification and easily acquired frame timing in the presence of dynamically changing signal path delay, improving signal acquisition.

US Patent:

6515961, Feb 4, 2003

Filed:

Mar 10, 1999

Appl. No.:

09/265203

Inventors:

Brian K. Harms - Boulder CO
Anthony C. K. Soong - Superior CO

Assignee:

Qualcomm Incorporated - San Diego CA

International Classification:

H04B 7216

US Classification:

370206, 370209, 370335, 370342, 375146, 375297

Abstract:

The invention is a CDMA decresting technology that reduces or eliminates peaks in the CDMA signal. The CDMA technology generates a correction signal in response to peaks in the CDMA signal that exceed a value. The value typically corresponds to the maximum power level of a power amplifier. The CDMA technology combines the correction signal with the CDMA signal to generate a decrested CDMA signal with reduced peaks. In some examples of the invention, the CDMA technology processes polar coordinate representations of the quadrature components of the CDMA signal to generate the correction signal. Using the invention, the power amplifier in a CDMA base station can operate at increased power levels without exceeding out-of-band signal power limitations. As a result, the base station operates more efficiently and with a greater range or capacity.

US Patent:

6687238, Feb 3, 2004

Filed:

Mar 10, 1999

Appl. No.:

09/265204

Inventors:

Anthony C. K. Soong - Superior CO
Brian K. Harms - Boulder CO
Thomas J. Funk - Lafayette CO
Larry D. Flowers - Broomfield CO
Bruce S. Schwartz - Boulder CO
Todd A. Pressley - Superior CO
Robin Night - Loveland CO

Assignee:

Qualcomm Incorporated - San Diego CA

International Classification:

H04B 7216

US Classification:

370335, 370342

Abstract:

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.

US Patent:

6765953, Jul 20, 2004

Filed:

Sep 7, 1999

Appl. No.:

09/390453

Inventors:

Brian K. Harms - Boulder CO
Sherman Gregory - San Diego CA

Assignee:

Qualcomm Incorporated - San Diego CA

International Classification:

H04L 2730

US Classification:

375150, 375147

Abstract:

The present invention is a method and apparatus for detecting the presence of or acquiring a signal in a data stream, where the signal has been spread using a pseudonoise sequence. The method comprises the steps of delaying a pseudonoise sequence by a plurality of predetermined delays to produce a plurality of delayed pseudonoise sequences, combining each of the delayed pseudonoise sequences with the data stream to produce a plurality of despread data streams, and accumulating each of the despread data streams for a preselected duration to produce a plurality of coherent sums. Each of the coherent sums are accumulated for a further duration to produce a plurality of non-coherent sums. The non-coherent sums are examined to determine the most likely PN offset hypothesis.

US Patent:

6831940, Dec 14, 2004

Filed:

Jun 19, 2001

Appl. No.:

09/885755

Inventors:

Brian Harms - Superior CO
Sherman A. Gregory - San Diego CA
Brian K. Butler - La Jolla CA
Avneesh Agrawal - Sunnyvale CA

Assignee:

QUALCOMM Incorporated - San Diego CA

International Classification:

H04B 1500

US Classification:

375130, 375134

Abstract:

A system and method for narrowing the range of frequency uncertainty of a Doppler shifted pilot signal in a satellite or other communications system with relative signal source and receiver motion. The satellite communications system includes a user terminal (for example, a mobile wireless telephone), a gateway (terrestrial base station), and at least one satellite with unknown position and unknown relative velocity. The method includes the steps of shifting the pilot signal over a plurality of frequency hypotheses, coherently accumulating samples of the pilot signal over a plurality of chips, measuring the energy of the accumulated pilot signal samples, accumulating the energy measurements over a plurality of chips to produce an energy accumulation value, and determining which of the plurality of frequency hypotheses results in the highest energy accumulation value.

US Patent:

7742785, Jun 22, 2010

Filed:

Aug 9, 2006

Appl. No.:

11/502232

Inventors:

Brian K. Harms - Boulder CO, US

Assignee:

QUALCOMM Incorporated - San Diego CA

International Classification:

H04M 1/00

US Classification:

4555521, 455255, 455265, 455313

Abstract:

Techniques for generating reference signals for multiple communication systems are described. An apparatus comprises a reference oscillator, a frequency control unit, and a plurality of frequency synthesizers. The reference oscillator generates a main reference signal and may be a crystal oscillator or some other type of oscillator. The frequency control unit estimates the frequency error of the main reference signal and provides a frequency error estimate. The plurality of frequency synthesizers receive the main reference signal and generate a plurality of system reference signals for a plurality of systems. At least one (e. g. , each) frequency synthesizer corrects the frequency error of the main reference signal based on the frequency error estimate from the frequency control unit. Each frequency synthesizer may include a sigma-delta modulator used to generate a divider control for a phase locked loop (PLL). The divider control corrects for the frequency error of the main reference signal.

Address:

10220 Zenobia Cir, Westminster, CO 80031

Phone:

(303)2961494

VIN:

1N6AD0EV9CC442983

Make:

NISSAN

Model:

FRONTIER

Year:

2012