Robert T Love, Kenneth A Stewart, Bryan Rapala: Method and apparatus for multi-phase component downconversion. Motorola, Daniel W Juffernbruch, June 6, 1995: US05422909 (118 worldwide citation)

The present invention provides a downconverter method and apparatus for downconverting a multiphase modulated signal. The downconverter can be implemented in a multi-phase receiver such as a quadrature receiver. An analog-to-digital converter (103) converts an intermediate frequency signal to a digi ...

Michael D Kotzin, Kenneth A Stewart: Method and apparatus for reducing self interference in a communication system. Motorola, Richard A Sonnentag, March 31, 1998: US05734967 (100 worldwide citation)

A code division multiple access (CDMA) communication system reduces interference by reducing the encoding rate for selected mobiles. The system primarily uses link related characteristics such as, inter alia, distance measurements, physical resource power and mobile determined noise, to determine wh ...

Sandeep H Krishnamurthy, Robert T Love, Ajit Nimbalker, Kenneth A Stewart, Xiangyang Zhuang: Apparatus and method for communicating and processing a positioning reference signal based on identifier associated with a base station. Motorola Mobility, May 10, 2011: US07940740 (98 worldwide citation)

A base station communicates a positioning reference signal (PRS) to wireless communication devices over a downlink in a wireless communication system by encoding a PRS into a first set of transmission resources, encoding other information into a second set of transmission resources, multiplexing the ...

Robert T Love, Amativa Ghosh, Ravi Kuchibhotla, Kenneth A Stewart, Nicholas W Whinnett: HARQ ACK/NAK coding for a communication device during soft handoff. Motorola, Brian M Mancini, Randall S Vaas, March 14, 2006: US07013143 (94 worldwide citation)

A method for rate selection by a communication device for enhanced uplink during soft handoff in a wireless communication system includes a first step of receiving information from a scheduler. This information can include one or more of scheduling, a rate limit, a power margin limit, and a persiste ...

Kenneth A Stewart, Yi Qiao: Method and apparatus for joint detection of data in a direct sequence spread spectrum communications system. Motorola, Kenneth A Haas, January 15, 2002: US06339612 (62 worldwide citation)

Joint detection of data signals occurs in a code division, multiple access (CDMA) communication system as follows: A digital signal processor (

Brian K Classon, Kevin L Baum, Amitava Ghosh, Robert T Love, Vijay Nangia, Kenneth A Stewart: Method and apparatus for reducing round trip latency and overhead within a communication system. Motorola Mobility, October 4, 2011: US08031583 (59 worldwide citation)

During operation radio frames are divided into a plurality of subframes. Data is transmitted over the radio frames within a plurality of subframes, and having a subframe type selected from a plurality of subframe types. Each subframe type having a same time duration and being distinguished by having ...


Robert T Love, Raja S Bachu, Brian K Classon, Ravikiran Nory, Kenneth A Stewart, Yakun Sun: Channel quality indicator for time, frequency and spatial channel in terrestrial radio access network. Motorola, Roland K Bowler II, November 25, 2008: US07457588 (49 worldwide citation)

A wireless communication terminal (200) that communicates on a plurality of sub-carriers divided into a plurality of frequency bands, wherein each frequency band includes at least one sub-carrier. The terminal successively generates channel quality indicator (CQI) measurement information reports bas ...

Kenneth A Stewart, Amitava Ghosh: Method and apparatus for mobile station location within a communication system. Motorola, Kenneth A Haas, December 28, 1999: US06009091 (45 worldwide citation)

A Dedicated Physical Location Channel (DPLCH) is utilized by a mobile station (913) to support subscriber location functions. The DPLCH is spread by an Orthogonal Variable Spreading Factor (OVSF) code C.sub.L (502) of length 256 which is distinct from those OVSF codes assigned to other channels util ...

Ravi Kuchibhotla, Raja S Bachu, Robert T Love, Ravikiran Nory, Kenneth A Stewart: Method for aperiodic mobile assisted sleep mode. Motorola Mobility, November 30, 2010: US07844265 (35 worldwide citation)

Disclosed is a method for mobile assisted sleep mode to reduce current drain in packet based mobile systems. The method comprising the step of receiving (102) from a network a channel condition threshold. Then, monitoring (104) a channel condition while in sleep mode. Then exiting (110) sleep mode i ...