CA2256287A1 - Communication device having a wideband receiver and operating method therefor - Google Patents

Communication device having a wideband receiver and operating method therefor

Info

Publication number
CA2256287A1
CA2256287A1 CA002256287A CA2256287A CA2256287A1 CA 2256287 A1 CA2256287 A1 CA 2256287A1 CA 002256287 A CA002256287 A CA 002256287A CA 2256287 A CA2256287 A CA 2256287A CA 2256287 A1 CA2256287 A1 CA 2256287A1
Authority
CA
Canada
Prior art keywords
carriers
receiver
relatively low
frequency
low frequency
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002256287A
Other languages
French (fr)
Other versions
CA2256287C (en
Inventor
John Duncan Mcnicol
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ericsson AB
Original Assignee
Northern Telecom Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Northern Telecom Ltd filed Critical Northern Telecom Ltd
Publication of CA2256287A1 publication Critical patent/CA2256287A1/en
Application granted granted Critical
Publication of CA2256287C publication Critical patent/CA2256287C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/0003—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain
    • H04B1/0007—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain wherein the AD/DA conversion occurs at radiofrequency or intermediate frequency stage
    • H04B1/0017—Digital filtering
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/0003—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/0003—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain
    • H04B1/0007—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain wherein the AD/DA conversion occurs at radiofrequency or intermediate frequency stage
    • H04B1/001—Channel filtering, i.e. selecting a frequency channel within the SDR system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/26—Circuits for superheterodyne receivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation

Abstract

To accommodate for a release of uncleared spectrum in a wideband communication system (10) while improving isolation in a receiver (FIG. 4) between wideband carriers, a common intermediate frequency converter down-converts differing but relatively high frequency carriers, incident to the receiver, to corresponding differing but relatively low frequency carriers. Receiver chains (174-176) response to the plurality of relatively low frequency carriers each have a filter (140-144) arranged to isolate selected ones of the relatively low frequency carriers. In a radio frequency communication system having three or more frequency sequential carriers, the receiver chains (174-176) may include branches that have filters that further isolate carriers within the receiver by applying non-sequential carriers to the branches in each receiver chain.
CA002256287A 1997-12-23 1998-12-17 Communication device having a wideband receiver and operating method therefor Expired - Lifetime CA2256287C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9727211A GB2332822B (en) 1997-12-23 1997-12-23 Communication device having a wideband receiver and operating method therefor
GB9727211.6 1997-12-23

Publications (2)

Publication Number Publication Date
CA2256287A1 true CA2256287A1 (en) 1999-06-23
CA2256287C CA2256287C (en) 2008-08-05

Family

ID=10824141

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002256287A Expired - Lifetime CA2256287C (en) 1997-12-23 1998-12-17 Communication device having a wideband receiver and operating method therefor

Country Status (3)

Country Link
US (1) US6363262B1 (en)
CA (1) CA2256287C (en)
GB (1) GB2332822B (en)

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US6370371B1 (en) 1998-10-21 2002-04-09 Parkervision, Inc. Applications of universal frequency translation
US8406724B2 (en) 1998-10-21 2013-03-26 Parkervision, Inc. Applications of universal frequency translation
US7236754B2 (en) 1999-08-23 2007-06-26 Parkervision, Inc. Method and system for frequency up-conversion
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US6853690B1 (en) 1999-04-16 2005-02-08 Parkervision, Inc. Method, system and apparatus for balanced frequency up-conversion of a baseband signal and 4-phase receiver and transceiver embodiments
US6879817B1 (en) * 1999-04-16 2005-04-12 Parkervision, Inc. DC offset, re-radiation, and I/Q solutions using universal frequency translation technology
US7065162B1 (en) 1999-04-16 2006-06-20 Parkervision, Inc. Method and system for down-converting an electromagnetic signal, and transforms for same
US7693230B2 (en) 1999-04-16 2010-04-06 Parkervision, Inc. Apparatus and method of differential IQ frequency up-conversion
US7110444B1 (en) 1999-08-04 2006-09-19 Parkervision, Inc. Wireless local area network (WLAN) using universal frequency translation technology including multi-phase embodiments and circuit implementations
US6895232B2 (en) * 1999-05-07 2005-05-17 Conexant Systems, Inc. Method and apparatus for receiving radio frequency signals
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US8295406B1 (en) * 1999-08-04 2012-10-23 Parkervision, Inc. Universal platform module for a plurality of communication protocols
US6963734B2 (en) * 1999-12-22 2005-11-08 Parkervision, Inc. Differential frequency down-conversion using techniques of universal frequency translation technology
US7010286B2 (en) 2000-04-14 2006-03-07 Parkervision, Inc. Apparatus, system, and method for down-converting and up-converting electromagnetic signals
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US6813320B1 (en) 2000-06-28 2004-11-02 Northrop Grumman Corporation Wireless telecommunications multi-carrier receiver architecture
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US6731953B1 (en) * 2000-06-30 2004-05-04 Nortel Networks Limited Apparatus and method for asymmetrical frequency spectrum utilization in a wireless network
US6983012B1 (en) * 2000-08-03 2006-01-03 Golden Bridge Technology Incorporated Implementation of digital filter with reduced hardware
US7454453B2 (en) 2000-11-14 2008-11-18 Parkervision, Inc. Methods, systems, and computer program products for parallel correlation and applications thereof
US20020151331A1 (en) * 2001-04-02 2002-10-17 Amr Abdelmonem Cryo-cooled front-end system with multiple outputs
EP1292159B1 (en) * 2001-09-11 2005-11-30 Samsung Electronics Co., Ltd. Base station supporting multi-sector/multi-frequency assignment for seamles call service
US7072427B2 (en) 2001-11-09 2006-07-04 Parkervision, Inc. Method and apparatus for reducing DC offsets in a communication system
US7088975B1 (en) * 2002-01-04 2006-08-08 Broadcom Corporation Automatic gain control system and method using multiple local AGC loops
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US7379883B2 (en) 2002-07-18 2008-05-27 Parkervision, Inc. Networking methods and systems
US6744832B2 (en) * 2002-07-23 2004-06-01 George J. Miao Analog-to-digital converter bank based ultra wideband communications
US7079828B1 (en) * 2002-10-25 2006-07-18 Edgewater Computer Systems, Inc. Method and apparatus for side-lobe cancellation in wideband radio systems
US7203488B2 (en) * 2002-11-08 2007-04-10 Louis Luneau Flexible software radio transceiver
US7167694B2 (en) * 2003-04-14 2007-01-23 Silicon Laboratories Inc. Integrated multi-tuner satellite receiver architecture and associated method
US7289053B2 (en) * 2003-08-18 2007-10-30 Speedark Ltd. Data conversion methods and systems
US6996197B2 (en) * 2003-09-17 2006-02-07 Motorola, Inc. Method and apparatus for reducing interference within a communication system
US7474635B2 (en) * 2003-11-05 2009-01-06 Northrop Grumman Corp. Communication system and method using time division multiplexed (TDM) downlink
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US20070054642A1 (en) 2004-07-26 2007-03-08 Manish Bhardwaj Automatic gain control (AGC) for multichannel/wideband communications system
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US8706165B2 (en) * 2006-01-25 2014-04-22 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for reducing combiner loss in a multi-sector, omni-base station
US20080169878A1 (en) * 2007-01-12 2008-07-17 Giuseppe Resnati Low loss combiner for narrowband and wideband rf signals
US20080287163A1 (en) * 2007-05-17 2008-11-20 Telefonaktiebolaget Lm Ericsson (Publ), Method and apparatus for converting between a multi-sector, omni-base station configuration and a multi-sector base station configuration
ATE492939T1 (en) 2007-06-04 2011-01-15 Nxp Bv CIRCUIT FOR PROCESSING DIGITAL SIGNALS AND CORRESPONDING METHOD WITH BAND SELECTION
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EP2356755B1 (en) * 2008-11-04 2016-08-17 Telefonaktiebolaget LM Ericsson (publ) Method and arrangement for enabling improved receiver quality for noise limited uplink signals
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Also Published As

Publication number Publication date
GB9727211D0 (en) 1998-02-25
GB2332822B (en) 2002-08-28
US6363262B1 (en) 2002-03-26
CA2256287C (en) 2008-08-05
GB2332822A (en) 1999-06-30

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Effective date: 20181217

MKEX Expiry

Effective date: 20181217