William P Jenkins

US Patent:

7110437, Sep 19, 2006

Filed:

Mar 14, 2002

Appl. No.:

10/099889

Inventors:

John H. Oates - Amherst NH, US
Steven R. Imperiali - Townsend MA, US
Alden J. Fuchs - Nashua NH, US
Kathleen J. Jacques - Somerville MA, US
Jonathan E. Greene - Great Barrington MA, US
William J. Jenkins - Leominster MA, US
Frank P. Lauginiger - Francestown NH, US
David E. Majchrzak - Merrimack NH, US
Paul E. Cantrell - Chelmsford MA, US
Mirza Cifric - Jamaica Plain MA, US
Ian N. Dunn - Providence RI, US
Michael J. Vinskus - Litchfield NH, US

Assignee:

Mercury Computer Systems, Inc. - Chelmsford MA

International Classification:

H04B 1/69
H06F 13/28
H06F 12/00

US Classification:

375147, 710 22, 711212

Abstract:

The invention provides methods and apparatus for multiple user detection (MUD) processing that have application, for example, in improving the capacity CDMA and other wireless base stations. One aspect of the invention provides a digital signal processor (“DSP”) that processes user waveforms. The DSP has an associated memory and an associated direct memory access (“DMA”) controller that controls access to that memory. A programmable logic device (“PLD”) is coupled to the DMA controller and configures it to move data relating to user waveform characteristics from the memory to a buffer external to the DSP.

US Patent:

7110440, Sep 19, 2006

Filed:

Mar 14, 2002

Appl. No.:

10/099883

Inventors:

John H. Oates - Amherst NH, US
Steven R. Imperiali - Townsend MA, US
Alden J. Fuchs - Nashua NH, US
Kathleen J. Jacques - Somerville MA, US
Jonathan E. Greene - Great Barrington MA, US
William J. Jenkins - Leominster MA, US
Frank P. Lauginiger - Francestown NH, US
David E. Majchrzak - Merrimack NH, US
Paul E. Cantrell - Chelmsford MA, US
Mirza Cifric - Jamaica Plain MA, US
Ian N. Dunn - Providence RI, US
Michael J. Vinskus - Litchfield NH, US

Assignee:

Mercury Computer Systems, Inc. - Chelmsford MA

International Classification:

H04B 1/69
H04B 7/216

US Classification:

375148, 375144, 375147

Abstract:

The invention provides methods and apparatus for multiple user detection (MUD) processing that have application, for example, in improving the capacity CDMA and other wireless base stations. One aspect of the invention provides a multiprocessor, multiuser detection system for detecting user transmitted symbols in CDMA short-code spectrum waveforms. A first processing element generates a matrix (hereinafter, “gamma matrix”) that represents a correlation between a short-code associated with one user and those associated with one or more other users. A set of second processing elements generates, e. g. , from the gamma matrix, a matrix (hereinafter, “R-matrix”) that represents cross-correlations among user waveforms based on their amplitudes and time lags. A third procesing element produces estimates of the user transmitted symbols as a function of the R-matrix.

US Patent:

7210062, Apr 24, 2007

Filed:

Mar 14, 2002

Appl. No.:

10/099545

Inventors:

John H. Oates - Amherst NH, US
Steven R. Imperiali - Townsend MA, US
Alden J. Fuchs - Nashua NH, US
Kathleen J. Jacques - Somerville MA, US
Jonathan E. Greene - Great Barrington MA, US
William J. Jenkins - Leominster MA, US
Frank P. Lauginiger - Francetown NH, US
David E. Majchrzak - Hudson NH, US
Paul E. Cantrell - Chelmsford MA, US
Mirza Cifric - Jamaica Plain MA, US
Ian N. Dunn - Providence RI, US
Michael J. Vinskus - Litchfield NH, US

Assignee:

Mercury Computer Systems, Inc. - Chelmsford MA

International Classification:

G06F 11/00

US Classification:

714 15, 714 47

Abstract:

The invention provides methods and apparatus for multiple user detection (MUD) processing that have application, for example, in improving the capacity CDMA and other wireless base stations. One aspect of the invention provides a multiprocessor, multiuser detection system for detecting user transmitted symbols in CDMA short-code spectrum waveforms. A first processing element generates a matrix (hereinafter, “gamma matrix”) that represents a correlation between a short-code associated with one user and those associated with one or more other users. A set of second processing elements generates, e. g. , from the gamma matrix, a matrix (hereinafter, “R-matrix”) that represents cross-correlations among user waveforms based on their amplitudes and time lags. A third procesing element produces estimates of the user transmitted symbols as a function of the R-matrix.

US Patent:

7327780, Feb 5, 2008

Filed:

Mar 14, 2002

Appl. No.:

10/099918

Inventors:

John H. Oates - Amherst NH, US
Steven R. Imperiali - Townsend MA, US
Alden J. Fuchs - Nashua NH, US
Kathleen J. Jacques - Somerville MA, US
Jonathan E. Greene - Great Barrington MA, US
William J. Jenkins - Leominster MA, US
Frank P. Lauginiger - Francestown NH, US
David E. Majchrzak - Merrimack NH, US
Paul E. Cantrell - Chelmsford MA, US
Mirza Cifric - Jamaica Plain MA, US
Ian N. Dunn - Providence RI, US
Michael J. Vinskus - Litchfield NH, US

Assignee:

Mercury Computer Systems, Inc. - Chelmsford MA

International Classification:

H04B 1/00

US Classification:

375150, 375136, 375137, 375142, 375143, 375144, 375147, 375148, 375149, 375151, 375152

Abstract:

The invention provides methods and apparatus for multiple user detection (MUD) processing that have application, for example, in improving the capacity CDMA and other wireless base stations. One aspect of the invention provides a multiprocessor, multiuser detection system for detecting user transmitted symbols in CDMA short-code spectrum waveforms. A first processing element generates a matrix (hereinafter, “gamma matrix”) that represents a correlation between a short-code associated with one user and those associated with one or more other users. A set of second processing elements generates, e. g. , from the gamma matrix, a matrix (hereinafter, “R-matrix”) that represents cross-correlations among user waveforms based on their amplitudes and time lags. A third processing element produces estimates of the user transmitted symbols as a function of the R-matrix.

US Patent:

7376175, May 20, 2008

Filed:

Nov 8, 2002

Appl. No.:

10/291176

Inventors:

John H. Oates - Amherst NH, US
Steven R. Imperiali - Townsend MA, US
Alden J. Fuchs - Nashua NH, US
Kathleen J. Jacques - Somerville MA, US
Jonathan E. Greene - Great Barrington MA, US
William J. Jenkins - Leominster MA, US
Frank P. Lauginiger - Francestown NH, US
David E. Majchrzak - Merrimack NH, US
Paul E. Cantrell - Chelmsford MA, US
Mizra Cifric - Jamaica Plain MA, US
Ian N. Dunn - Providence RI, US
Michael J. Vinskus - Litchfield NH, US

Assignee:

Mercury Computer Systems, Inc. - Chelmsford MA

International Classification:

H04B 1/00
H03K 9/00
H04L 27/00
G06F 12/00
G06F 13/00

US Classification:

375147, 375148, 375316, 711118, 711149, 71 22

Abstract:

The invention provides methods and apparatus for multiple user detection (MUD) processing. One aspect of the invention provides a multiprocessor, multiuser detection system for detecting user transmitted symbols in CDMA short-code spectrum waveforms. A first processing element generates a matrix (hereinafter, “gamma matrix”) that represents a correlation between a short-code associated with one user and those associated with one or more other users. A set of second processing elements generates, e. g. , from the gamma matrix, a matrix (hereinafter, “R-matrix”) that represents cross-correlations among user waveforms based on their amplitudes and time lags. A third processing element produces estimates of the user transmitted symbols as a function of the R-matrix.

US Patent:

7453922, Nov 18, 2008

Filed:

Mar 14, 2002

Appl. No.:

10/099912

Inventors:

John H. Oates - Amherst NH, US
Steven R. Imperiali - Townsend MA, US
Alden J. Fuchs - Nashua NH, US
Kathleen J. Jacques - Somerville MA, US
Jonathan E. Greene - Great Barrington MA, US
William J. Jenkins - Leominster MA, US
Frank P. Lauginiger - Francestown NH, US
David E. Majchrzak - Merrimack NH, US
Paul E. Cantrell - Chelmsford MA, US
Mirza Cifric - Jamaica Plain MA, US
Ian N. Dunn - Providence RI, US
Michael J. Vinskus - Litchfield NH, US

Assignee:

Mercury Computer Systems, Inc. - Chelmsford MA

International Classification:

H04B 1/00

US Classification:

375148, 375262, 375341, 375316

Abstract:

The invention provides methods and apparatus for multiple user detection (MUD) processing that have application, for example, in improving the capacity CDMA and other wireless base stations. One aspect of the invention provides a multiprocessor, multiuser detection system for detecting user transmitted symbols in CDMA short-code spectrum waveforms. A first processing element generates a matrix (hereinafter, “gamma matrix”) that represents a correlation between a short-code associated with one user and those associated with one or more other users. A set of second processing elements generates, e. g. , from the gamma matrix, a matrix (hereinafter, “R-matrix”) that represents cross-correlations among user waveforms based on their amplitudes and time lags. A third procesing element produces estimates of the user transmitted symbols as a function of the R-matrix.