1
Timothy A Thomas, Frederick W Vook, Kevin L Baum: Method and device for channel estimation, equalization, and interference suppression. Motorola, Douglas D Fekete, October 31, 2000: US06141393 (176 worldwide citation)

A method and device in a communication system including a receiver having a plurality of receiving antennas for receiving a plurality of information bursts transmitted by at least one transmitting user device where the information bursts contain a number of data symbols and a pilot symbol sequence o ...


2
Frederick W Vook, Timothy A Thomas, Xiangyang Zhuang: Method and apparatus for multi-antenna transmission. Motorola, Kenneth A Haas, Jeffrey K Jacobs, August 9, 2005: US06927728 (155 worldwide citation)

In a multiple-input, multiple-output (MIMO) communication system, a method and apparatus for multi-antenna transmission. In accordance with the preferred embodiment of the present invention a reduced number of transmit weight matrices are fed back to the transmitter. Each transmit weight matrix is t ...


3
Frederick W Vook, Timothy A Thomas: Method and device for multi-user channel estimation. Motorola, Kenneth A Haas, July 20, 2004: US06765969 (129 worldwide citation)

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 a ...


4
Frederick W Vook, Mark Demange, Hungkun Chang, William K Doss: Power management technique for determining a device mode of operation. Motorola, Val Jean Hillman, April 29, 1997: US05625882 (99 worldwide citation)

A power management technique for use in an wireless communication system having a service access point and a plurality mobile battery powered user devices, user devices in communication with each other and with the access point, power management technique for determining when a user device may trans ...


5
Frederick W Vook, Timothy A Thomas: Method and device for exploiting transmit diversity in time varying wireless communication systems. Motorola, Kenneth A Haas, December 21, 2004: US06834043 (89 worldwide citation)

A method of operating a communication system including at least two transmitting antennas and at least one receive antenna. Symbols are encoded across the at least two transmitting antennas during a coding interval. Data is received at each receive antenna and at each symbol of the coding interval. ...


6
Frederick W Vook, Mark Demange, Hungkun Chang: Power management and packet delivery method for use in a wireless local area network (LAN). ValJean Hillman, September 24, 1996: US05560021 (76 worldwide citation)

A power management and packet delivery method for use in a wireless local area network (LAN) having a plurality of mobile battery powered user devices, the user devices in communication with each other, the power management and packet delivery technique for determining when a user device may transit ...


7
Timothy A Thomas, Frederick W Vook: Method and device for multiple input/multiple output transmit and receive weights for equal-rate data streams. Motorola, January 17, 2006: US06987819 (75 worldwide citation)

The invention provides a method of operating a communication system. A channel matrix of a gain and phase between each transmit antenna and each receive antenna of the communication system is provided. At least one receive weight vector is computed as a function of the channel matrix and at least on ...


8
Frederick W Vook, Mark Demange, William K Doss: Packet delivery method for use in a wireless local area network (LAN). Motorola, Val Jean Hillman, Kevin A Buford, June 3, 1997: US05636220 (72 worldwide citation)

A packet delivery method for assuring the delivery of packets in an wireless local area network (LAN) having a service access point (AP) and a plurality mobile user devices, said user devices in communication with each other and with the access point. The access point determines when a destination d ...


9
Timothy A Thomas, Frederick W Vook: Method and device for multi-user channel estimation. Motorola, Kenneth A Haas, November 30, 2004: US06826240 (72 worldwide citation)

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 fro ...


10
Timothy A Thomas, Frederick W Vook: Method and device for adaptive antenna combining weights. Motorola, Douglas D Fekete, Daniel W Juffernbruch, March 26, 2002: US06362781 (71 worldwide citation)

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 s ...