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公开(公告)号：SE520828C2
公开(公告)日：2003-09-02
申请号：SE9901286
申请日：1999-04-12
Applicant: MOTOROLA INC
Inventor： SCHIEMENZ ARTHUR FRED , LUZ YUDA YEHUDA , ANDERSON DALE ROBERT , JALLOUL LOUAY ADEL
Abstract: In a hybrid matrix amplifier array (100), a configurable digital transform matrix (116) is initialize with a matrix of transform coefficients. A plurality of digital input signals (M1-M4) are received at inputs of the configurable digital transform matrix (116). The plurality of digital input signals are transformed to produce a plurality of transform digital signals (A1-A4) using the matrix of transform coefficients. The plurality of transform digital signals are converted to a plurality of transformed analoged signals (206) to produce a plurality of transformed analog signals. The transformed analog signals are amplified (104, 208) to produce amplified transformed signals. Finally, the amplified transformed signals are inverse transformed (102, 210) to produce output signals that correspond to a respective digital input signal (M1-M4). Upon sensing a failure in an amplifier array (104,126) a controller (128) recalls matrix transform coefficients from a memory (130) and write and reconfigures the digital transform matrix (116) to minimize the effects of the amplifier failure at the hybrid matrix amplifier outputs (132).
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公开(公告)号：DE19581527C2
公开(公告)日：2002-08-01
申请号：DE19581527
申请日：1995-12-05
Applicant: MOTOROLA INC
Inventor： SMITH PAUL FIELDING , SMITH JOHN M , ROTTINGHAUS ALAN P , RADER SHELIA MARIE , PINCKLEY DANNY THOMAS , LUZ YUDA YEHUDA , LUREY DANIEL MORRIS , LAIRD KEVIN MICHAEL , KOBRINETZ TONY , ELDER ROBERT C , BAILEY DONALD E
IPC: H03D7/00 , H01Q1/24 , H01Q3/26 , H03B28/00 , H03C1/00 , H03C3/00 , H03D7/16 , H04B1/04 , H04B1/16 , H04B1/26 , H04B1/28 , H04B1/38 , H04B1/40 , H04B7/04 , H04B7/06 , H04B7/08 , H04B7/185 , H04B7/24 , H04L1/06 , H04L1/22 , H04L27/20 , H04W4/18 , H04W88/06 , H04Q7/20
Abstract: 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 plurality of antennas (412) and to convert these signals to baseband signals. The baseband signals are processed to recover a communication channel therefrom. Downlink baseband signals are also processed and digital signal processing within the digital converter module (426) up converters and modulates the downlink baseband signals to digital intermediate frequency signals. The digital intermediate frequency signals are converted to analog radio frequency signals, amplified and radiated from transmit antennas (420).
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公开(公告)号：BR9712297A
公开(公告)日：2002-02-05
申请号：BR9712297
申请日：1997-09-05
Applicant: MOTOROLA INC
Abstract: In a hybrid matrix amplifier array (100), a configurable digital transform matrix (116) is initialize with a matrix of transform coefficients. A plurality of digital input signals (M1-M4) are received at inputs of the configurable digital transform matrix (116). The plurality of digital input signals are transformed to produce a plurality of transform digital signals (A1-A4) using the matrix of transform coefficients. The plurality of transform digital signals are converted to a plurality of transformed analoged signals (206) to produce a plurality of transformed analog signals. The transformed analog signals are amplified (104, 208) to produce amplified transformed signals. Finally, the amplified transformed signals are inverse transformed (102, 210) to produce output signals that correspond to a respective digital input signal (M1-M4). Upon sensing a failure in an amplifier array (104,126) a controller (128) recalls matrix transform coefficients from a memory (130) and write and reconfigures the digital transform matrix (116) to minimize the effects of the amplifier failure at the hybrid matrix amplifier outputs (132).
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公开(公告)号：CA2372564A1
公开(公告)日：2001-10-18
申请号：CA2372564
申请日：2001-03-30
Applicant: MOTOROLA INC
Inventor： JALLOUL LOUAY , TENBROOK KEITH A , CHEN JIANGNAN , ROTSTEIN RON , LUZ YUDA YEHUDA
Abstract: A soft handoff operation is provided for a first signal transmitted accordin g to a first communication standard (IS-95B) and a second signal transmitted according to a second communication standard (IS-95C). A mobile station (MS) (204) receives the first signal, detects a pilot signal, measures pilot sign al strength, and transmits a pilot strength measurement message. When the MS fails to receive a handoff direction message after transmitting the pilot strength message, the MS searches for a detecting presence of a broadcast control channel (BCCH) associated with a type IS-95C cell site (202) and measures a carrier-to-interference ratio of the BCCH. The MS compares the carrier-to-interference ratio to a threshold, and when the ratio is above th e threshold, initiates a second communication according to the IS-95C standard , thus initiating a soft handoff operation and allowing cell sites (202, 203) to transmit information according to the IS-95C and IS-95B standards, respectively.
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公开(公告)号：GB2354911B
公开(公告)日：2001-09-26
申请号：GB0017421
申请日：2000-07-14
Applicant: MOTOROLA INC
Inventor： ROTSTEIN RON , CORKE ROBERT J , PRYSBY DANIEL G , LUZ YUDA YEHUDA
Abstract: A method of reducing power consumption in a communication device includes a step of acquiring a signal on a common pilot channel of a radio communication system. A next step includes detecting predetermined bits in the signal on the common pilot channel indicating activity on paging channels of the radio communication system. When no paging channel activity is indicated in the second step, a last step includes powering down portions of the electrical circuitry of the communication device so as to reduce power consumption, and when paging channel activity is indicated in the second step, a next step includes powering up portions of the electrical circuitry of the communication device such that those paging channels indicating activity are monitored by the communication device.
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Patent Agency Ranking
公开(公告)号：GB2311916B
公开(公告)日：2000-01-19
申请号：GB9711998
申请日：1995-12-28
Applicant: MOTOROLA INC
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公开(公告)号：GB2333917A
公开(公告)日：1999-08-04
申请号：GB9907897
申请日：1997-09-05
Applicant: MOTOROLA INC
Abstract: In a hybrid matrix amplifier array (100), a configurable digital transform matrix (116) is initialized with a matrix of transform coefficients. A plurality of digital input signals (M 1 -M 4 ) are received at inputs of the configurable digital transform matrix (116). The plurality of digital input signals are transformed to produce a plurality of transform digital signals (A 1 -A 4 ) using the matrix of transform coefficients. The plurality of transform digital signals are converted to a plurality of transformed analoged signals (206) to produce a plurality of transformed analog signals. The transformed analog signals are amplified (104, 208) to produce amplified transformed signals. Finally, the amplified transformed signals are inverse transformed (102, 210) to produce output signals that correspond to a respective digital input signal (M 1 -M 4 ). Upon sensing a failure in an amplifier array (104, 126) a controller (128) recalls matrix transform coefficients from a memory (130) and write and reconfigures the digital transform matrix (116) to minimize the effects of the amplifier failure at the hybrid matrix amplifier outputs (132).
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公开(公告)号：IT1295417B1
公开(公告)日：1999-05-12
申请号：ITRM970604
申请日：1997-10-08
Applicant: MOTOROLA INC
Abstract: In a hybrid matrix amplifier array (100), a configurable digital transform matrix (116) is initialize with a matrix of transform coefficients. A plurality of digital input signals (M1-M4) are received at inputs of the configurable digital transform matrix (116). The plurality of digital input signals are transformed to produce a plurality of transform digital signals (A1-A4) using the matrix of transform coefficients. The plurality of transform digital signals are converted to a plurality of transformed analoged signals (206) to produce a plurality of transformed analog signals. The transformed analog signals are amplified (104, 208) to produce amplified transformed signals. Finally, the amplified transformed signals are inverse transformed (102, 210) to produce output signals that correspond to a respective digital input signal (M1-M4). Upon sensing a failure in an amplifier array (104,126) a controller (128) recalls matrix transform coefficients from a memory (130) and write and reconfigures the digital transform matrix (116) to minimize the effects of the amplifier failure at the hybrid matrix amplifier outputs (132).
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公开(公告)号：BR9510374A
公开(公告)日：1998-06-02
申请号：BR9510374
申请日：1995-12-28
Applicant: MOTOROLA INC
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公开(公告)号：IT1283923B1
公开(公告)日：1998-05-07
申请号：ITRM960095
申请日：1996-02-09
Applicant: MOTOROLA INC
Inventor： LUZ YUDA YEHUDA , LONG JAMES FRANK
IPC: H03D7/00 , H01Q1/24 , H01Q3/26 , H03B28/00 , H03C1/00 , H03C3/00 , H03D7/16 , H03M1/08 , H03M1/66 , H03M7/36 , H04B1/04 , H04B1/16 , H04B1/26 , H04B1/28 , H04B1/38 , H04B1/40 , H04B7/04 , H04B7/06 , H04B7/08 , H04B7/185 , H04B7/24 , H04B14/04 , H04L1/06 , H04L1/22 , H04L27/20 , H04W4/18 , H04W88/06
Abstract: In a quantization noise reduction circuit (200), a feedback signal (W)is added to an input signal (X) to the quantization circuit to reduce quantization noise. The feedback signal is generated as a filtered difference between a sample of a N bit signal (X') and a time coincident sample of a M bit quantized signal, where M
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