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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 ...


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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 ...


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Nicholas William Whinnett, Oscar Clop, Francesc Boixadera, Kiran Kumar Kuchi, Kamyar Rohani: Method and system for transmitting and receiving signals transmitted from an antenna array with transmit diversity techniques. Motorola, L Bruce Terry, Kenneth A Haas, November 13, 2001: US06317411 (128 worldwide citation)

In a method for wireless data communication between a base station and a subscriber unit in a wireless communication system, groups of symbols of an input data stream are commutated to produce a plurality of commutated data streams. The plurality of commutated data streams are then transformed to pr ...


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Bernard Burg, Ronnie Taib, Alan Schmitt: Information services provision in a telecommunications network. Motorola, Kenneth A Haas, January 28, 2003: US06512922 (125 worldwide citation)

A radio telecommunications network for providing information services to a mobile subscriber (


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James Edward Mitzlaff, John Duncan Toone: Method and apparatus for calibrating location finding equipment within a communication system. Motorola, Kenneth A Haas, January 11, 2000: US06014102 (108 worldwide citation)

Error vectors are added to any position estimate determined by Location finding equipment (LFE) in order to give a corrected position estimate. Error vectors are determined utilizing calibration terminals (114), which are roaming vehicles that move throughout the communication system's (100) coverag ...


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Shelia Marie Rader, Yuda Yehuda Luz, Daniel Morris Lurey: Multi-channel digital transceiver and method. Motorola, Kenneth A Haas, December 26, 2000: US06167099 (106 worldwide citation)

A multi-channel digital transceiver (400) receives uplink radio frequency signals and converts these signals to digital intermediate frequency signals. Digital signal processing, including a digital converter module (426), is employed to select digital intermediate frequency signals received at a pl ...


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Jeffrey D Bonta, Robert T Love, Matthew J Dillon: Method for autonomous handoff in a wireless communication system. Motorola, Kenneth A Haas, January 8, 2002: US06337983 (106 worldwide citation)

A method and apparatus for handoff to a rescue channel is introduced without the need to send and receive handoff control messages. In the preferred embodiment of the present invention, coordination of the rescue procedure at the infrastructure and mobile station is provided first by disabling the m ...


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Brian Keith Classon, Vipul Anil Desai, Mark Cudak: Method and system for reduced memory hybrid automatic repeat request. Motorola, Kenneth A Haas, March 2, 2004: US06700867 (101 worldwide citation)

The invention provides a method for operating a hybrid automatic repeat request communication system wherein it is determined whether a receiver can process a data packet, and a self-decode request associated with the data packet is sent based on the determination.