Thomas Edward Pratt

US Patent:

6754487, Jun 22, 2004

Filed:

Aug 15, 2000

Appl. No.:

09/638921

Inventors:

Alan David Sanders - Atlanta GA
Perry Simon Lewars Linder - Chevy Chase MD
Thomas Gregory Pratt - Covington GA
Anthony Jerome Dickherber - Atlanta GA
Timothy Scott Floyd - Atlanta GA
Leslie Westhaver Pickering - Atlanta GA

Assignee:

Telecom Network Optimization, Inc. - Atlanta GA

International Classification:

H04Q 720

US Classification:

455423, 455425, 455 6711, 4552261

Abstract:

Optimization of a cellular network is facilitated by an apparatus that performs drive test measurements of a cellular network to identify co-channel interference. The co-channel interference is identified by measuring the signal strengths at various locations within a cell sector and analyzing the recorded information. A key aspect of the invention is synthesizing the received signals to identify the cellular transmitters originating the signals. If signal energy is detected from more than one cellular transmitter on a single frequency, the co-channel interference is identified. This process is particular well suited within a GSM cellular system by detecting the transmission of forward control channel messages and using the information within the forward control channel messages to identify the origination cellular transmitters.

US Patent:

RE43186, Feb 14, 2012

Filed:

Apr 20, 2011

Appl. No.:

13/090716

Inventors:

Alan David Sanders - Atlanta GA, US
Perry Simon Linder Lewars - Chevy Chase MD, US
Thomas Gregory Pratt - Covington GA, US
Anthony Jerome Dickherber - Atlanta GA, US
Timothy Scott Floyd - Marietta GA, US
Leslie Westhaver Pickering - Atlanta GA, US

Assignee:

PCTEL, Inc. - Bloomingdale IL

International Classification:

H04Q 7/20

US Classification:

455423, 455425, 455 631, 455 6711, 4552261, 455296, 375343, 375346

Abstract:

Optimization of a cellular network is facilitated by an apparatus that performs drive test measurements of a cellular network to identify co-channel interference. The co-channel interference is identified by measuring the signal strengths at various locations within a cell sector and analyzing the recorded information. A key aspect of the invention is synthesizing the received signals to identify the cellular transmitters originating the signals. If signal energy is detected from more than one cellular transmitter on a single frequency, the co-channel interference is identified. This process is particular well suited within a GSM cellular system by detecting the transmission of forward control channel messages and using the information within the forward control channel messages to identify the origination cellular transmitters.

US Patent:

8605703, Dec 10, 2013

Filed:

Jan 30, 2008

Appl. No.:

12/525297

Inventors:

Thomas G. Pratt - Covington GA, US
Brett T. Walkenhorst - Douglasville GA, US

Assignee:

Georgia Tech Research Corporation - Atlanta GA

International Classification:

H04B 7/216
H04B 7/212

US Classification:

370342, 370347, 375267

Abstract:

A method for mitigating interference for a received wireless signal comprises at least three steps. The method comprises receiving a wireless signal with a receiver device. The wireless signal includes at least an interference signal and a desired signal. The method further comprises breaking the received wireless signal into sub-bands; and filtering the received wireless signal with a polarization filter, in order to separate the interference signal from the desired signal.

US Patent:

20100003034, Jan 7, 2010

Filed:

Jan 30, 2008

Appl. No.:

12/525299

Inventors:

Thomas G. Pratt - Covington GA, US
Brett T. Walkenhorst - Douglasville GA, US

Assignee:

Georgia Tech Research Corporation - Atlanta GA

International Classification:

H04B 10/00

US Classification:

398152

Abstract:

The present invention describes methods and apparatus for adaptive polarization transmission. An exemplary embodiment of the present invention provides an adaptive polarization transmission method. The method includes the step of analyzing at a transmitter device a first set of polarization state information relating to a first wireless signal path. Furthermore, the method includes the step of adapting a transmission signal to be distributed by the transmitter device based on at least the first set of polarization state information. In addition to adaptive polarization transmission methods, the present invention provides various adaptive polarization transmission systems. In an exemplary embodiment, an adaptive polarization transmission system includes a transmitter device. The transmitter device includes an analyzing unit for processing a first set of polarization state information relating to a first wireless signal path. Furthermore, the transmitter device includes an adapting unit for adapting a transmission signal to be distributed by the transmitter device based on at least the first set polarization state information.