公开(公告)号：GB2311916A

公开(公告)日：1997-10-08

申请号：GB9711998

申请日：1995-12-28

Applicant: MOTOROLA INC

Inventor： LUREY DANIEL MORRIS ,  ROTTINGHAUS ALAN P ,  RADER SHEILA MARIE ,  LUZ YUDA YEHUDA ,  SMITH PAUL FIELDING ,  SMITH JOHN M ,  PINCKLEY DANNY THOMAS ,  LAIRD KEVIN MICHAEL ,  KOBRINETZ TONY ,  ELDER ROBERT ,  BAILEY DONALD E

IPC: H04L27/18 ,  H01Q1/24 ,  H01Q3/26 ,  H03D3/00 ,  H03M1/12 ,  H04B1/04 ,  H04B1/26 ,  H04B1/28 ,  H04B7/06 ,  H04B7/08 ,  H04B7/24 ,  H04J1/05 ,  H04L1/06 ,  H04L1/22 ,  H04L25/14 ,  H04L27/26 ,  H04W88/08 ,  H04L27/06 ,  H04L27/20

Abstract: A digital receiver (200) and a transmitter (300), wherein the digital receiver includes a plurality of antennas (202) for receiving uplink radio frequency signals; a plurality of analog to digital converters (210) for converting the received radio frequency signals into digital signals; a switched digital down converter (214) for down converting one of the digital signals to a baseband IF signal; and a channel processor (228) for recovering one of a plurality of communication channels contained within the baseband IF signal.

公开(公告)号：BR9506911A

公开(公告)日：1997-09-16

申请号：BR9506911

申请日：1995-12-05

Applicant: MOTOROLA INC

Inventor： LUZ YUDA YEHUDA ,  SMITH JOHN W ,  ROTTINGHAUS ALAN P ,  RADER SHEILA MARIE ,  PINCKLEY DANIEL THOMAS ,  LUREY DANIEL MORRIS ,  LAIRD KEVIN MICHAEL ,  KOBRINETZ TONY ,  ELDER ROBERT C ,  BAILEY DONALD E ,  SMITH PAUL FIELDING

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 ,  H04B7/02

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).

公开(公告)号：SE9702156D0

公开(公告)日：1997-06-06

申请号：SE9702156

申请日：1997-06-06

Applicant: MOTOROLA INC

Inventor： LUREY DANIEL MORRIS ,  ROTTINGHAUS ALAN P ,  RADER SHEILA MARIE ,  YEHUDA YUDA ,  SMITH PAUL FIELDING ,  SMITH JOHN M ,  PINCKLEY DANNY THOMAS ,  LAIRD KEVIN MICHAEL ,  KOBRINETZ TONY ,  ELDER ROBERT C ,  BAILEY DONALD E

IPC: H04L27/18 ,  H01Q1/24 ,  H01Q3/26 ,  H03D3/00 ,  H03M1/12 ,  H04B1/04 ,  H04B1/26 ,  H04B1/28 ,  H04B7/06 ,  H04B7/08 ,  H04B7/24 ,  H04J1/05 ,  H04L1/06 ,  H04L1/22 ,  H04L25/14 ,  H04L27/26 ,  H04W88/08 ,  H04B

公开(公告)号：DE19581527T1

公开(公告)日：1997-05-07

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 ,  H04L27/32

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).

公开(公告)号：BR9405975A

公开(公告)日：1996-01-09

申请号：BR9405975

申请日：1994-09-16

Applicant: MOTOROLA INC

Inventor： PINCKLEY DANNY THOMAS ,  LAIRD KEVIN MICHAEL ,  LYNK CHARLES N JR

IPC: H03G3/20 ,  H03F1/32 ,  H03G3/30 ,  H04B1/02 ,  H04B1/04

Abstract: An apparatus and method of reducing a peak envelope power of a linear power amplifier (10) amplifying a plurality of channels is provided. The method includes the steps of measuring (104) the peak envelope power of the linear power amplifier, measuring a channel activity level (101) of each channel of the plurality of channels, and, when the peak envelope power exceeds a first threshold, changing (103, 106) at least one parameter of a channel of the plurality of channels having a channel activity level exceeding a second threshold to reduce the peak envelope power.

公开(公告)号：DE60033940T2

公开(公告)日：2007-06-28

申请号：DE60033940

申请日：2000-04-04

Applicant: MOTOROLA INC

Inventor： SMITH PAUL FIELDING ,  LAIRD KEVIN MICHAEL ,  PINCKLEY DANNY THOMAS

IPC: H03M1/12 ,  H03M1/66 ,  H03D7/00 ,  H04B1/04

Abstract: In a digital preprocessing system for processing a digital signal for analog transmission, the digital signal is up-sampled to produce a digital up-sampled signal having signal components in a plurality of Nyquist bands including a first Nyquist band and a plurality of super-Nyquist bands at higher frequencies than the first Nyquist band, wherein the first Nyquist band includes a baseband signal component and a plurality of aliased signal components. Thereafter, one of the plurality of signal components in the first Nyquist band is selected from the digital up-sampled signal. Finally, the selected one of the plurality of signal components is output at a frequency that will cause a digital to analog converter to output an aliased signal component in a super-Nyquist band nearer an anticipated peak amplitude of a filtering characteristic of the digital to analog converter than an aliased signal component in the super-Nyquist band that would be output by the digital to analog converter processing the baseband signal component.

公开(公告)号：AU4195000A

公开(公告)日：2000-11-10

申请号：AU4195000

申请日：2000-04-04

Applicant: MOTOROLA INC

Inventor： SMITH PAUL FIELDING ,  LAIRD KEVIN MICHAEL ,  PINCKLEY DANNY THOMAS

IPC: H03M1/12 ,  H03D7/00 ,  H04B1/04 ,  H03M1/66

Abstract: In a digital preprocessing system for processing a digital signal for analog transmission, the digital signal is up-sampled to produce a digital up-sampled signal having signal components in a plurality of Nyquist bands including a first Nyquist band and a plurality of super-Nyquist bands at higher frequencies than the first Nyquist band, wherein the first Nyquist band includes a baseband signal component and a plurality of aliased signal components. Thereafter, one of the plurality of signal components in the first Nyquist band is selected from the digital up-sampled signal. Finally, the selected one of the plurality of signal components is output at a frequency that will cause a digital to analog converter to output an aliased signal component in a super-Nyquist band nearer an anticipated peak amplitude of a filtering characteristic of the digital to analog converter than an aliased signal component in the super-Nyquist band that would be output by the digital to analog converter processing the baseband signal component.

公开(公告)号：CA2318271A1

公开(公告)日：1999-07-29

申请号：CA2318271

申请日：1998-12-29

Applicant: MOTOROLA INC

Inventor： LAIRD KEVIN MICHAEL ,  WHINNETT NICHOLAS WILLIAM

IPC: H04L27/20 ,  H04B1/707 ,  H04J13/00 ,  H04J13/10 ,  H04L27/18 ,  H04J13/04

Abstract: In a wireless communication system, a chip time is selected in a complex pseudonoise (PN) sequence generator (130, 132). For a next chip time following the selected chip time, a phase difference between a previous complex PN chip and a next complex PN chip is restricted to a preselected phase angle (204). In one embodiment, every other chip time is selected and the preselected angle is 90 degrees (216, 218).

公开(公告)号：AU678124B2

公开(公告)日：1997-05-15

申请号：AU5294796

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 ,  H04B7/02

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).

公开(公告)号：PL316636A1

公开(公告)日：1997-02-03

申请号：PL31663695

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 ,  H04B7/02

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).