Adam Spencer Kerr

US Patent:

6973314, Dec 6, 2005

Filed:

Sep 28, 2001

Appl. No.:

09/967058

Inventors:

Sarah Kate Wilson - Menlo Park CA, US
Todd Henry Chauvin - Sunnyvale AZ, US
Adam Bruce Kerr - Menlo Park CA, US
Christopher Brunner - Sunnyvale CA, US
Mitchell D. Trott - Mountain View CA, US
Athanasios A. Kapasi - San Francisco CA, US
Erik David Lindskog - Sunnyvale CA, US

Assignee:

ArrayComm LLC. - San Jose CA

International Classification:

H04Q007/20

US Classification:

4554521, 4554522, 455453

Abstract:

A system and related methods for clustering multi-point communication targets is presented. According to one aspect of the invention, a method comprising measuring one or more performance characteristics associated for each of at least a subset of a plurality of targets in a wireless communication system, and selectively building one or more clusters, each cluster including one or more target(s) and sharing a wireless communication channel, based at least in part on the performance characteristics.

US Patent:

7020107, Mar 28, 2006

Filed:

Jan 21, 2003

Appl. No.:

10/348923

Inventors:

Athanasios A. Kasapi - San Francisco CA, US
Adam B. Kerr - Menlo Park CA, US
Xiaoming Yu - Cupertino CA, US
Lars Johan Persson - Stockholm, SE

Assignee:

Arraycomm, LLC - San Jose CA

International Classification:

H04Q 7/00

US Classification:

370329, 370339, 370344, 370503

Abstract:

An embodiment of the invention provides a method for effecting switchback on a spatial division multiple access (SDMA) PHS channel. A communication signal is broadcast over each of one or more SDMA channels of a multi-access channel to one or more corresponding user terminals. A set of transmit spatial weights is determined for a synchronization burst to a user terminal attempting to reestablish communication over an SDMA channel of the multi-access channel. The set of transmit spatial weights is determined such that interference caused by one or more communication signals to the synchronization burst is reduced.

US Patent:

7039363, May 2, 2006

Filed:

Sep 28, 2001

Appl. No.:

09/967896

Inventors:

Athanasios A. Kasapi - San Francisco CA, US
Mitchell D. Trott - Mountain View CA, US
Peter G. Khoury - San Francisco CA, US
Adam B. Kerr - Menlo Park CA, US
Serge Barbosa Da Torre - San Raphael, FR

Assignee:

ArrayComm LLC - San Jose CA

International Classification:

H04B 17/00
H04B 7/212
H04J 3/12

US Classification:

455 6711, 455561, 4555621, 455101, 370347, 370522

Abstract:

Methods and apparatus for calculating spatial processing strategies in adaptive antenna array processing systems. Reference signal quality, intersymbol interference, data processed and received signal quality can be determined by burst type or remote device type and used to determine a synthetic signal level for use in developing a spatial processing strategy. A synthetic signal have an isotropically distributed component can be added to the antennas in the array or the diagonal elements of the received signal covariance matrix to develop uplink and downlink spatial processing strategies. Different synthetic signals at different signal levels can be used to develop different uplink and downlink spatial processing strategies. The downlink signal level can be larger than the uplink signal level. Uplink and downlink processing strategies can be developed in substantially the same way.

US Patent:

7299073, Nov 20, 2007

Filed:

Oct 19, 2005

Appl. No.:

11/254599

Inventors:

Sarah Kate Wilson - Menlo Park CA, US
Todd Henry Chauvin - Sunnyvale AZ, US
Adam Bruce Kerr - Menlo Park CA, US
Christopher Brunner - Sunnyvale CA, US
Mitchell D. Trott - Mountain View CA, US
Athanasios A. Kapasi - San Francisco CA, US
Erik David Lindskog - Sunnyvale CA, US

Assignee:

ArrayComm, LLC - San Jose CA

International Classification:

H04M 1/00
H04B 1/00
H04Q 7/20

US Classification:

4555621, 455452, 455 631

Abstract:

A system and related methods for clustering multi-point communication targets is presented. According to one aspect of the invention, a method comprising measuring one or more performance characteristics associated for each of at least a subset of a plurality of targets in a wireless communication system, and selectively building one or more clusters, each cluster including one or more target(s) and sharing a wireless communication channel, based at least in part on the performance characteristics.

US Patent:

7342912, Mar 11, 2008

Filed:

Jun 28, 2002

Appl. No.:

10/187026

Inventors:

Adam B. Kerr - Menlo Park CA, US
Erik D. Lindskog - Sunnyvale CA, US
Christopher Brunner - Sunnyvale CA, US
Mitchell D. Trott - Mountain View CA, US

Assignee:

ArrayComm, LLC. - San Jose CA

International Classification:

H04B 7/212
H04B 1/76

US Classification:

370347, 370337, 455296, 455446

Abstract:

A method and apparatus are provided that optimizes a transmitted user-specific signal. In one embodiment, the invention includes receiving signals from a remote radio, deriving estimates of receive channels corresponding to the received signals using the received signals, deriving a model of an expected transmit channel to the remote radio based on the receive channel estimates, deriving a set of transmit parameters to be applied to an array of transmit antennas to transmit a signal to the remote radio by optimizing a transmit power criteria using the model of the expected transmit channel and constraints on the estimated quality of a signal transmitted over the expected transmit channel, and transmitting to the remote radio by applying the derived set of transmit parameters to the transmit antenna array.

US Patent:

7593693, Sep 22, 2009

Filed:

Mar 13, 2006

Appl. No.:

11/375500

Inventors:

Athanasios A. Kasapi - San Francisco CA, US
Mitchell D. Trott - San Mateo CA, US
Peter G. Khoury - San Francisco CA, US
Adam B. Kerr - Redwood City CA, US
Serge Barbosa Da Torre - Paris, FR

Assignee:

Intel Corporation - Santa Clara CA

International Classification:

H04B 17/00
H04B 1/00
H04B 15/00

US Classification:

455 6713, 455 6711, 455 631, 375144, 375285

Abstract:

Methods and apparatus for calculating spatial processing strategies in adaptive antenna array processing systems. Reference signal quality, intersymbol interference, data processed and received signal quality can be determined by burst type or remote device type and used to determine a synthetic signal level for use in developing a spatial processing strategy. A synthetic signal have an isotropically distributed component can be added to the antennas in the array or the diagonal elements of the received signal covariance matrix to develop uplink and downlink spatial processing strategies. Different synthetic signals at different signal levels can be used to develop different uplink and downlink spatial processing strategies. The downlink signal level can be larger than the uplink signal level. Uplink and downlink processing strategies can be developed in substantially the same way.

US Patent:

7795868, Sep 14, 2010

Filed:

Oct 8, 2008

Appl. No.:

12/247940

Inventors:

Peder E. Larson - Oakland CA, US
John M. Pauly - Stanford CA, US
Daniel B. Vigneron - Corte Madera CA, US
Albert Chen - San Francisco CA, US
Adam B. Kerr - Menlo Park CA, US

Assignee:

The Board of Trustees of the Leland Stanford Junior University - Palo Alto CA
The Regents of the University of California - Oakland CA

International Classification:

G01V 3/00

US Classification:

324307, 324309

Abstract:

A method for performing magnetic resonance spectroscopy is described. The method generally includes applying a tailored multiband spectral-spatial radio frequency excitation pulse to a sample including a first species and at least a second species having a different resonant frequency than the first species. The multiband excitation pulse excites the first species according to a first amplitude and excites the second species according to a second amplitude that is substantially greater than the first amplitude. Data is acquired from the sample. The acquired data is then utilized to generate a spectroscopic output. By way of example, the spectroscopic output is a spectroscopic image. In particular embodiments, the data for the first and second species is acquired dynamically over an observation window of time.

US Patent:

20130193966, Aug 1, 2013

Filed:

Jan 27, 2012

Appl. No.:

13/360510

Inventors:

Peder LARSON - Redwood City CA, US
Adam B. KERR - Menlo Park CA, US
John M. PAULY - Stanford CA, US
Daniel B. VIGNERON - Corte Madera CA, US

Assignee:

The Regents of The University of California - Oakland CA
The Board of Trustees of th Leland Stanford Junior University - Palo Alto CA

International Classification:

G01R 33/48

US Classification:

324309

Abstract:

A method for imaging a substrate and product over time is provided. The substrate and product are magnetically tagged with at least one magnetic gradient where magnetically tagging provides a tag-dependent signal phase for the substrate and a different tag-dependent signal phase for the product. At least one readout of magnetically tagged substrate and product is provided over time. The tag-dependent signal phase is used to determine product that has been transformed from magnetically tagged substrate and substrate that has been transformed from magnetically tagged product over time.