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公开(公告)号：FI115877B
公开(公告)日：2005-07-29
申请号：FI963346
申请日：1996-08-27
Applicant: MOTOROLA INC
Inventor： SMITH PAUL FIELDING , SMITH JOHN M , ROTTINGHAUS ALAN P , RADER SHEILA 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).
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公开(公告)号：CA2206311C
公开(公告)日：2003-11-11
申请号：CA2206311
申请日：1995-12-28
Applicant: MOTOROLA INC
Inventor： LUZ YUDA YEHUDA , LAIRD KEVIN MICHAEL , RADER SHEILA MARIE , LUREY DANIEL MORRIS , ROTTINGHAUS ALAN P , SMITH JOHN M , BAILEY DONALD E , SMITH PAUL FIELDING , ELDER ROBERT C , KOBRINETZ TONY , PINCKLEY DANNY THOMAS
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 , H04B1/18 , H04L27/00
Abstract: A wideband multi-channel transmitter and receiver (transceiver) for cellul ar communication systems. The transceiver includes programmable digital down converters (DDCs) and programmable digital up converters (DUCs) providing a range of decimation/interpolation ratios to accommodate multiple access, i.e . AMPS, NAMPS, USDC, PDC, for varying signal formats and bandwidths. The method of digitizing a wideband frequency signal used by DDCs and DUCs has application to digitizing any wideband signal occupying continuous or discontinuous spectrum while reducing sampling frequency and hardware requirements. The arrangement of elements in the transceiver allows channel processing functions to be performed centrally, and transceiver functions to be performed at a communication cell site. The result is a savings to the operator by way of physical space required for equipment and in more centralized operati on and maintenance activities.
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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：DE19581876T1
公开(公告)日：1997-11-27
申请号：DE19581876
申请日：1995-12-28
Applicant: MOTOROLA INC
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公开(公告)号：FI963346A0
公开(公告)日：1996-08-27
申请号：FI963346
申请日：1996-08-27
Applicant: MOTOROLA INC
Inventor： SMITH PAUL FIELDING , SMITH JOHN M , ROTTINGHAUS ALAN P , RADER SHEILA 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 , H04B
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：FI963346A
公开(公告)日：1996-08-27
申请号：FI963346
申请日：1996-08-27
Applicant: MOTOROLA INC
Inventor： SMITH PAUL FIELDING , SMITH JOHN M , ROTTINGHAUS ALAN P , RADER SHEILA 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 , H04B
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：EP0800737A4
公开(公告)日：2002-07-24
申请号：EP95944265
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 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 , H04L27/06 , H04B7/04 , H04L27/20
CPC classification number: H04B7/0691 , H01Q1/246 , H01Q3/2605 , H03D3/006 , H03M1/121 , H04B1/0003 , H04B1/001 , H04B1/0032 , H04B1/26 , H04B1/28 , H04B7/06 , H04B7/0802 , H04B7/0874 , H04B7/24 , H04J1/05 , H04L1/06 , H04L1/22 , H04L25/14 , H04L27/2647 , H04W88/08
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.
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