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Frederick W Vook

from Schaumburg, IL
Age ~58
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Also known as:
Fredrick W Vook, Frederick W Yook, Fred W Vook
Phone and address:
521 Cutters Mill Ln, Schaumburg, IL 60194
(847) 882-5426
Related to:
Charles F SapienzaJulia D VookRichard W Vook, 95Noelle C Vook, 57Frederick Yook, 58Susanna M Swearingen, 53Tarina U Alampi, 83Antonio M Alampi, 84
Connected to:
David H Voon, 58William F Voon, 63Yee P Voon, 35Darren L Voong, 50Loong C Voong, 53Qui T Voong, 66Wendy L Voong, 56Jordan M Voor, 39Joseph H Voor, 99Amber R Voorhees, 48

Frederick Vook Phones & Addresses

  • 521 Cutters Mill Ln, Schaumburg, IL 60194 (847) 882-5426
  • Columbus, OH
  • Palatine, IL
  • Silver Spring, MD
  • Roselle, IL
  • Nedrow, NY

Interests

propositions de poste, missions de conse...

Industries

Tlcommunications

Resumes

Resumes

Frederick Vook Photo 1

Distinguished Member Of The Technical Staff At Motorola Labs Distinguished Member Of Technical Staff At Motorola

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Location:
Rgion de Chicago
Industry:
Tlcommunications
Experience:
Motorola Labs (Socit cote en bourse; Tlcommunications industry): Distinguished Member of the Technical Staff,  (-) Motorola (Socit cote en bourse; Tlcommunications industry): Distinguished Member of Technical Staff,  (1992-Present) 

Publications

Us Patents

Method And Device For Adaptive Antenna Combining Weights

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US Patent:
6362781, Mar 26, 2002
Filed:
Jun 30, 2000
Appl. No.:
09/607736
Inventors:
Timothy A. Thomas - Palatine IL
Frederick W. Vook - Schaumburg IL
Assignee:
Motorola, Inc. - Schaumburg IL
International Classification:
G01S 328
US Classification:
342383, 342367
Abstract:
A receiving device and method for operating a communication system are provided. The receiving device receives a plurality of time-domain Doppler channel estimates for at least one transmitter, a plurality of Doppler sinusoids, and a spatial covariance matrix of a corrupting environment. A Doppler spatial covariance matrix is created as a function of the time-domain Doppler channel estimates and the Doppler sinusoids. A total Doppler spatial covariance matrix is created as a function of the spatial covariance matrix of the corrupting environment and the Doppler spatial covariance matrix. A Doppler steering vector is created for at least one transmitter as a function of the Doppler channel estimates and the Doppler sinusoids. A combining weight for the at least one transmitter is then created as a function of the total Doppler spatial covariance matrix and the Doppler steering vector for at least one transmitter.

Method And Device For Multi-User Frequency-Domain Channel Estimation

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US Patent:
6445342, Sep 3, 2002
Filed:
Jun 30, 2000
Appl. No.:
09/608760
Inventors:
Timothy A. Thomas - Palatine IL
Frederick W. Vook - Schaumburg IL
Assignee:
Motorola, Inc. - Schaumburg IL
International Classification:
H04B 700
US Classification:
342367
Abstract:
The present invention is a technique of estimating the time and frequency response of at least one desired signal received by at least one antenna. The invention is an update formula for the time-invariant channel responses for multiple transmitting devices, called âDoppler channelsâ, that model the time-varying channel between each of the transmitting devices and each receiving device. Through use of the update formula, the time-varying channels of the multiple transmitting devices can be better tracked than with prior inventions.

Method And Device For Fixed In Time Adaptive Antenna Combining Weights

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US Patent:
6504506, Jan 7, 2003
Filed:
Jun 30, 2000
Appl. No.:
09/607733
Inventors:
Timothy A. Thomas - Palatine IL
Frederick W. Vook - Schaumburg IL
Assignee:
Motorola, Inc. - Schaumburg IL
International Classification:
G01S 328
US Classification:
342383, 342367
Abstract:
A receiving device and method for operating a communication system are provided. The receiving device receives at least one Doppler channel estimate for at least one transmitter and a spatial covariance matrix of a corrupting environment. The Doppler channel estimates are used to create a Null Doppler spatial covariance matrix. A total Doppler spatial covariance matrix is created as a sum of the spatial covariance matrix of the corrupting environment, plus the Doppler spatial covariance matrix. A combining weight for at least one transmitter and at least one Doppler channel is created from the total Doppler spatial covariance and the at least one Doppler channel for the at least one transmitter.

Method And System For Adaptive Channel Estimation Techniques

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US Patent:
6640088, Oct 28, 2003
Filed:
Dec 14, 2001
Appl. No.:
10/017731
Inventors:
Timothy A. Thomas - Palatine IL
Xiangyang Zhuang - Hoffman Estates IL
Frederick W. Vook - Schaumburg IL
Assignee:
Motorola, Inc. - Schaumburg IL
International Classification:
H04B 1700
US Classification:
455 6711, 455 6714, 455 6713, 455 6716, 375340, 375148
Abstract:
The invention provides a method of determining an adaptive channel estimation by providing a channel estimate, determining at least one channel condition, and determining an adapted channel estimate as a function of the channel estimate and the channel condition.

Method And Device For Multi-User Frequency-Domain Channel Estimation Based On Gradient Optimization Techniques

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US Patent:
6647078, Nov 11, 2003
Filed:
Jun 30, 2000
Appl. No.:
09/608582
Inventors:
Timothy A. Thomas - Palatine IL
Frederick W. Vook - Schaumburg IL
Assignee:
Motorola, Inc. - Schaumburg IL
International Classification:
H04B 110
US Classification:
375349, 375346, 375285, 455 63, 4552781
Abstract:
The invention is a method of estimating the time and frequency response of at least one desired signal received by at least one antenna, based on Gradient Optimization techniques. Through the use of gradient optimization techniques and efficient DFT processing, the invention provides frequency response estimates that require fewer computations than prior art decision-directed channel estimation devices.

Coding-Assisted Mimo Joint Detection And Decoding

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US Patent:
6757337, Jun 29, 2004
Filed:
Sep 5, 2002
Appl. No.:
10/235895
Inventors:
Xiangyang Zhuang - Hoffman Estates IL
Frederick Vook - Schaumburg IL
Assignee:
Motorola, Inc. - Schaumburg IL
International Classification:
H04L 2706
US Classification:
375267, 375240
Abstract:
To address the need for a receiver that provides good performance during poor channel conditions yet reduces the computational complexity of existing ML receivers, a method and apparatus for MIMO joint detection and decoding is provided herein. In accordance with the preferred embodiment of the present invention, a low-complexity linear filter method is first utilized by the receiver. However, a higher-complexity non-linear method is utilized when the performance of the linear method is not adequate, for example, during poor channel conditions. In order to reduce the complexity of the non-linear decoding method, the distances to a much smaller set of candidate constellation points are computed than with prior-art decoding methods. This is made possible by the fact that some bits decoded with higher confidence utilizing the output of a linear filter method can help the decoding of the other bits.

Method And Device For Multi-User Channel Estimation

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US Patent:
6765969, Jul 20, 2004
Filed:
Aug 22, 2000
Appl. No.:
09/643541
Inventors:
Frederick W. Vook - Schaumburg IL
Timothy A. Thomas - Palatine IL
Assignee:
Motorola, Inc. - Schaumburg IL
International Classification:
H04L 2700
US Classification:
375259, 375295, 375316
Abstract:
The invention computes frequency-domain channel gains by compiling a set of estimated channel gains as a function of pilot sequences, a set of analytical channel gains variables, and a set of weighting coefficients variables. A plurality of weighting coefficients are computed as a function of time and frequency correlation functions, a noise correlation matrix, and pilot sequences. A weighting matrix is computed from the weighting coefficients. After receiving a training sequence from at least one transmitter, a received data matrix is computed from the training sequence. The weighting matrix and the received data matrix are used to compute the frequency-domain channel gains. The invention also provides a method for reducing the computational complexity of estimating the time and frequency response of at least one desired signal received by at least one antenna. Also, the time and frequency response of at least one desired signal received by at least one antenna can be both interpolated and predicted with the present invention.

Method And Device For Multi-User Channel Estimation

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US Patent:
6826240, Nov 30, 2004
Filed:
Mar 15, 2000
Appl. No.:
09/526003
Inventors:
Timothy A. Thomas - Palatine IL
Frederick W. Vook - Schaumburg IL
Assignee:
Motorola, Inc. - Schaumburg IL
International Classification:
H04L 2706
US Classification:
375340, 375347
Abstract:
A receiving device and method for operating a communication system is provided. The receiving device receives a predetermined pilot sequence. The received pilot sequence is converted into at least one frequency domain pilot sequence. A plurality of time invariant channel estimates are determined from the frequency domain pilot sequence. The pilot sequence may include a null cyclic prefix. A time variant channel estimate may be determined from the time invariant channel estimates.

Isbn (Books And Publications)

Antenna Array Processing for Broadband Mobile Communication Systems

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Author

Frederick Vook

ISBN #

0470091940

Applications of Ion Beams to Metals

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Author

Frederick L. Vook

ISBN #

0306307812

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Frederick W Vook from Schaumburg, IL, age ~58 Get Report