David William Gibbons

US Patent:

6359923, Mar 19, 2002

Filed:

Dec 18, 1997

Appl. No.:

08/993721

Inventors:

Brian G. Agee - San Jose CA
Matthew Bromberg - San Jose CA
Derek Gerlach - Mountain View CA
David Gibbons - Redmond WA
James Timothy Golden - Carnation WA
Minnie Ho - Palo Alto CA
Elliott Hoole - Redmond WA
Mary Jesse - Issaquah WA
Robert Lee Maxwell - Duvall WA
Robert Ray Naish - San Jose CA
David J. Nix - Issaquah WA
David James Ryan - Alameda County CA
David Stephenson - San Jose CA

Assignee:

ATT Wireless Services, Inc. - Redmond WA

International Classification:

A61F 206

US Classification:

375130, 375135, 375136, 370342

Abstract:

A discrete multitone stacked-carrier spread spectrum communication method is based on frequency domain spreading including multiplication of a baseband signal by a set of superimposed, or stacked, complex sinusoid carrier waves. In a preferred embodiment, the spreading involves energizing the bins of a large Fast Fourier transform (FFT). This provides a considerable savings in computational complexity for moderate output FFT sizes. Point-to-multipoint and multipoint-to-multipoint (nodeless) network topologies are possible. A code-nulling method is included for interference cancellation and enhanced signal separation by exploiting the spectral diversity of the various sources. The basic method may be extended to include multielement antenna array nulling methods for interference cancellation and enhanced signal separation using spatial separation. Such methods permit directive and retrodirective rev transmission systems that adapt or can be adapted to the radio environment. Such systems are compatible with bandwidth-on-demand and higher-order modulation formats and use advanced adaptation algorithms.

US Patent:

6621851, Sep 16, 2003

Filed:

Nov 28, 2000

Appl. No.:

09/723337

Inventors:

Brian G. Agee - San Jose CA
Matthew Bromberg - San Jose CA
Derek Gerlach - Mountain View CA
David Gibbons - Redmond WA
James Timothy Golden - Carnation WA
Minnie Ho - Palo Alto CA
Elliott Hoole - Redmond WA
Mary Jesse - Issaquah WA
Robert Lee Maxwell - Duvall WA
Robert Ray Naish - San Jose CA
David J. Nix - Issaquah WA
David James Ryan - Oakland CA
David Stephenson - San Jose CA

Assignee:

ATT Wireless Services, Inc. - Redmond WA

International Classification:

H04B 169

US Classification:

375130, 375135, 370242

Abstract:

A discrete multitone stacked-carrier spread spectrum communication method is based on frequency domain spreading including multiplication of a baseband signal by a set of superimposed, or stacked, complex sinusoid carrier waves. In a preferred embodiment, the spreading involves energizing the bins of a large Fast Fourier transform (FFT). This provides a considerable savings in computational complexity for moderate output FFT sizes. Point-to-multipoint and multipoint-to-multipoint (nodeless) network topologies are possible. A code-nulling method is included for interference cancellation and enhanced signal separation by exploiting the spectral diversity of the various sources. The basic method may be extended to include multielement antenna array nulling methods for interference cancellation and enhanced signal separation using spatial separation. Such methods permit directive and retrodirective transmission systems that adapt or can be adapted to the radio environment. Such systems are compatible with bandwidth-on-demand and higher-order modulation formats and use advanced adaptation algorithms.

US Patent:

7106781, Sep 12, 2006

Filed:

Aug 3, 2001

Appl. No.:

09/920903

Inventors:

Brian G. Agee - San Jose CA, US
Matthew Bromberg - San Jose CA, US
Derek Gerlach - Mountain View CA, US
David Gibbons - Redmond WA, US
James Timothy Golden - Carnation WA, US
Minnie Ho - Palo Alto CA, US
Elliott Hoole - Redmond WA, US
Mary Jesse - Issaquah WA, US
Robert Lee Maxwell - Duvall WA, US
Robert Ray Naish - San Jose CA, US
David J. Nix - Issaquah WA, US
David James Ryan - Seattle CA, US
David Stephenson - San Jose CA, US

Assignee:

Cingular Wireless II, LLC - Atlanta GA

International Classification:

H04B 1/69
H04B 7/216

US Classification:

375141, 370342

Abstract:

A discrete multitone stacked-carrier spread spectrum communication method is based on frequency domain spreading including multiplication of a baseband signal by a set of superimposed, or stacked, complex sinusoid carrier waves. In a preferred embodiment, the spreading involves energizing the bins of a large Fast Fourier transform (FFT). This provides a considerable savings in computational complexity for moderate output FFT sizes. Point-to-multipoint and multipoint-to-multipoint (nodeless) network topologies are possible. A code-nulling method is included for interference cancellation and enhanced signal separation by exploiting the spectral diversity of the various sources. The basic method may be extended to include multielement antenna array nulling methods for interference cancellation and enhanced signal separation using spatial separation. Such methods permit directive and retrodirective transmission systems that adapt or can be adapted to the radio environment. Such systems are compatible with bandwidth-on-demand and higher-order modulation formats and use advanced adaptation algorithms.

US Patent:

7149238, Dec 12, 2006

Filed:

Apr 21, 2006

Appl. No.:

11/409437

Inventors:

Brian G. Agee - San Jose CA, US
Matthew Bromberg - San Jose CA, US
Derek Gerlach - Mountain View CA, US
David Gibbons - Redmond WA, US
James Timothy Golden - Carnation WA, US
Minnic Ho - Palo Alto CA, US
Elliott Hoole - Redmond WA, US
Mary Jesse - Issaquah WA, US
Robert Lee Maxwell - Duvall WA, US
Robert Ray Naish - San Jose CA, US
David J. Nix - Issaquah WA, US
David James Ryan - Seattle CA, US
David Stephenson - San Jose CA, US

Assignee:

Cingular Wireless II, LLC - Atlanta GA

International Classification:

H04B 1/69

US Classification:

375141, 375130

Abstract:

A discrete multitone stacked-carrier spread spectrum communication method is based on frequency domain spreading including multiplication of a baseband signal by a set of superimposed, or stacked, complex sinusoid carrier waves. In a preferred embodiment, the spreading involves energizing the bins of a large Fast Fourier transform (FFT). This provides a considerable savings in computational complexity for moderate output FFT sizes. Point-to-multipoint and multipoint-to-multipoint (nodeless) network topologies are possible. A code-nulling method is included for interference cancellation and enhanced signal separation by exploiting the spectral diversity of the various sources. The basic method may be extended to include multielement antenna array nulling methods for interference cancellation and enhanced signal separation using spatial separation. Such methods permit directive and retrodirective transmission systems that adapt or can be adapted to the radio environment. Such systems are compatible with bandwidth-on-demand and higher-order modulation formats and use advanced adaptation algorithms.