Patrick Burton Smith
Medical Practice in Salt Lake City, UT

4947361, Aug 7, 1990

Sep 28, 1988

7/250795

Patrick J. Smith - Salt Lake City UT
Scott R. Bullock - West Jordan UT
Jeffery Mac Thornock - Layton UT

Unisys Corporation - Blue Bell PA

G06F 1531

36472409

A narrowband parameter estimator circuit is described which can be used to estimate the frequency and the relative power of narrowband interference tones which reside in a wideband information signal. A two-weight adaptive filter with a phase/frequency-lock loop circuit works in conjunction with a stepped synthesizer to lock onto the individual narrowband interference tones. A lock-detect circuit signals a digital logic unit to record the frequency of the stepped synthesizer and to measure the power in the adaptive filter output signal. This same output signal is used to cancel the unwanted tone in the wideband information signal being transmitted.

4726035, Feb 16, 1988

Mar 26, 1987

7/030301

Scott R. Bullock - West Jordan UT
Patrick J. Smith - Salt Lake City UT

Unisys Corporation - Blue Bell PA

H04B 314

375 14

The reference channel, the narrowband channel, and the error feedback channel are all constructed with analog components, while the adaptive processor is constructed with digital components. Unavoidable analog time delays in the narrowband and the error feedback channels are compensated for in the digital adaptive processor. The adaptive line enhancer described herein employs a local oscillator signal which is mixed with the input signal in a reference channel, which is subsequently converted to a digital signal. A digitized reference signal is supplied to an adaptive filter as an input signal. The adjustable weight values of the adaptive filter are adjusted by a feedback digitized signal. The output signal is derived from the subtraction of a narrowband analog signal, which is derived from the adaptive filter. The error feedback signal is split off of the output signal, mixed with the local oscillator signal, and supplied to the weight update mechanisms.

5805584, Sep 8, 1998

Feb 23, 1996

8/606378

Samuel C. Kingston - Salt Lake City UT
Thomas R. Giallorenzi - Salt Lake City UT
Randal R. Sylvester - West Valley City UT
David W. Matolak - Herndon VA
Patrick J. Smith - Salt Lake City UT

L-3 Communications Corporation - New York NY

H04B 7216, H04J 306

370342

Disclosed are methods for acquiring a forward channel in a point-to-multipoint CDMA system. One method includes the steps of (a) despreading a received CDMA signal with a first pn code that is known to be present in the received CDMA signal and obtaining a first measure of received signal level; (b) despreading the received CDMA signal with a second pn code that is known not to be present in the received CDMA signal and obtaining a second measure of received signal level; and (c) synchronizing to a desired channel using a difference between the first and second signal levels. In this method the first step of despreading despreads a continuously transmitted side-channel, and the step of synchronizing synchronizes to the side-channel. Also, the step of obtaining a first measure of received signal level obtains a correlation peak, and the step of obtaining a second measure of received signal level obtains a correlation null. Preferably, the steps of despreading and obtaining are accomplished iteratively over a range of n first pn code phase states and over a range of n second pn code phase states.

4726036, Feb 16, 1988

Mar 26, 1987

7/030302

Laurence D. Sawyer - Reading VT
Patrick J. Smith - Salt Lake City UT

Unisys Corporation - Blue Bell PA

H04B 314

375 14

The weights of least mean square (LMS) adaptive filter are updated with a different set of taps than are used to form the output of the adaptive filter in the adaptive processing device of the present invention. As a result of performing the multiplications and sums required for the filter operation simultaneously, an integral number of clock cycle delays appear in the narrowband and error feedback channels. The number of taps of the tapped delay line of the invention are increased, whereby the increased delay through the delay line may be used to compensate for a delay through the filter of an integral number of clock delay cycles. Instantaneous weight updating in accordance with the signal being utilized, may then be achieved at a clock rate frequency that is ten times or more greater than prior art adaptive filters.

5903551, May 11, 1999

Jan 12, 1998

9/005938

Samuel C Kingston - Salt Lake City UT
Thomas R. Giallorenzi - Salt Lake City UT
Randal R Sylvester - West Valley City UT
David W Matolak - Salt Lake City UT
Patrick J Smith - Salt Lake City UT

L-3 Communications Corporation - New York NY

H04B7/216

370335

Disclosed are methods for acquiring a forward channel in a point-to-multipoint CDMA system. One method includes the steps of (a) despreading a received CDMA signal with a first pn code that is known to be present in the received CDMA signal and obtaining a first measure of received signal level; (b) despreading the received CDMA signal with a second pn code that is known not to be present in the received CDMA signal and obtaining a second measure of received signal level; and (c) synchronizing to a desired channel using a difference between the first and second signal levels. In this method the first step of despreading despreads a continuously transmitted side-channel, and the step of synchronizing synchronizes to the side-channel. Also, the step of obtaining a first measure of received signal level obtains a correlation peak, and the step of obtaining a second measure of received signal level obtains a correlation null. Preferably, the steps of despreading and obtaining are accomplished iteratively over a range of n first pn code phase states and over a range of n second pn code phase states.

4788652, Nov 29, 1988

Mar 26, 1987

7/030303

Scott R. Bullock - West Jordan UT
Patrick J. Smith - Salt Lake City UT
Laurence D. Sawyer - Reading VT

Unisys Corporation - Blue Bell PA

G06J 100, H04B 314

364602

An I-Q channel adaptive line enhancer has bandpass filters with passbands that can be widened to well beyond the band that is actually being processed by the adaptive line enhancer. This eliminates the requirement of filtering one of the sidebands as is required in single channel adaptive line enhancers, in which the sum and difference sidebands are generated on up-conversion. Band limiting is done with lowpass filters, and the local oscillator may be made variable so that any part of the band that is passed by the bandpass filters can be processed by a single I-Q channel adaptive line enhancer. This type of I-Q channel adaptive line enhancer can process any one of a large number of possible bands without tunable bandpass filters, or without banks of adaptive line enhancers which have been preset to adjacent sub-bands.

5063572, Nov 5, 1991

Jun 4, 1990

7/533183

Ronald S. Leahy - Salt Lake City UT
Patrick J. Smith - Salt Lake City UT

Unisys Corporation - Blue Bell PA

H04K 100

375 1

A detector circuit for indicating the chip rate of a direct sequence frequency hopped data transmission signal. The wide band input signal is channelized into L adjacent sub-bands and each sub-band signal is multiplied by a delayed copy of itself and then hard limited, after which all the hard limited product signals are totalized to give a resultant signal representative of the chip rate.

6999423, Feb 14, 2006

Nov 27, 2001

09/995219

Roger W. Call - Salt Lake City UT, US
Michael J. Francl - Layton UT, US
Patrick J. Smith - Salt Lake City UT, US

L-3 Communications Corp. - New York NY

H04L 12/26

370238, 370351, 370400

A method and system for optimizing a mobile radio network topology for an N node network where each node has K connecting links. A base network topology is established and a cost value is determined for the base network. It is determined if all possible local transformations on the base network topology have been performed and if not a local transformation is performed on the base network to form a transformed network. A cost is calculated for the transformed network and the cost is compared with the cost of a base network. The transformed network is established as the base network if the cost of the transformed network is less than the cost of the base network.

8194573, Jun 5, 2012

Jul 14, 2008

12/172739

Patrick J. Smith - Salt Lake City UT, US
Michael J. Hurst - South Jordan UT, US
Daniel G. Watt - West Jordan UT, US
Dennis C. Pulsipher - Farmington UT, US

L-3 Communications, Corp. - New York NY

H04L 12/28

370255

A directional access network can include a plurality of nodes and wireless links between ones of the nodes. Topology management of the network can discover when network fragmentation exists, identify nodes positioned to heal the fragmentation, and establish new active links between the identified nodes.