CA2294218A1 - Processing a spread spectrum signal in a frequency adjustable system - Google Patents

Processing a spread spectrum signal in a frequency adjustable system Download PDF

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Publication number
CA2294218A1
CA2294218A1 CA002294218A CA2294218A CA2294218A1 CA 2294218 A1 CA2294218 A1 CA 2294218A1 CA 002294218 A CA002294218 A CA 002294218A CA 2294218 A CA2294218 A CA 2294218A CA 2294218 A1 CA2294218 A1 CA 2294218A1
Authority
CA
Canada
Prior art keywords
spread spectrum
spectrum signal
processing
frequency adjustable
adjustable system
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
CA002294218A
Other languages
French (fr)
Other versions
CA2294218C (en
Inventor
Erik A. Ramberg
Robert K. Froelich
Forrest F. Fulton
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.)
Landis and Gyr Innovations Inc
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2294218A1 publication Critical patent/CA2294218A1/en
Application granted granted Critical
Publication of CA2294218C publication Critical patent/CA2294218C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7073—Synchronisation aspects
    • H04B1/7075—Synchronisation aspects with code phase acquisition
    • H04B1/70751—Synchronisation aspects with code phase acquisition using partial detection
    • H04B1/70752—Partial correlation
    • 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
    • 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
    • H04B1/7073—Synchronisation aspects
    • H04B1/7075—Synchronisation aspects with code phase acquisition
    • H04B1/708—Parallel implementation

Abstract

A spread spectrum signal sampled (131) at a selected sampling rate is despread (132) and accumulated (136) in an accumulation element (134) at a center frequency lower than the sampling rate and higher than zero. A frequency adjustment element (145) may be used to adjust the accumulation element (134) to have a resonant frequency approximately equal to the center frequency.
CA002294218A 1997-06-23 1998-06-19 Processing a spread spectrum signal in a frequency adjustable system Expired - Lifetime CA2294218C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/880,634 1997-06-23
US08/880,634 US6047016A (en) 1997-06-23 1997-06-23 Processing a spread spectrum signal in a frequency adjustable system
PCT/US1998/012860 WO1998059427A1 (en) 1997-06-23 1998-06-19 Processing a spread spectrum signal in a frequency adjustable system

Publications (2)

Publication Number Publication Date
CA2294218A1 true CA2294218A1 (en) 1998-12-30
CA2294218C CA2294218C (en) 2008-02-19

Family

ID=25376730

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002294218A Expired - Lifetime CA2294218C (en) 1997-06-23 1998-06-19 Processing a spread spectrum signal in a frequency adjustable system

Country Status (7)

Country Link
US (1) US6047016A (en)
EP (1) EP0992119A4 (en)
AU (1) AU751872B2 (en)
BR (1) BR9810300A (en)
CA (1) CA2294218C (en)
MX (1) MXPA00000192A (en)
WO (1) WO1998059427A1 (en)

Families Citing this family (47)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6531982B1 (en) 1997-09-30 2003-03-11 Sirf Technology, Inc. Field unit for use in a GPS system
JPH11186987A (en) * 1997-12-22 1999-07-09 Matsushita Electric Ind Co Ltd Phase tracking device for cdma receiver
US6327471B1 (en) 1998-02-19 2001-12-04 Conexant Systems, Inc. Method and an apparatus for positioning system assisted cellular radiotelephone handoff and dropoff
US6348744B1 (en) 1998-04-14 2002-02-19 Conexant Systems, Inc. Integrated power management module
SE9802109D0 (en) * 1998-06-12 1998-06-12 Ericsson Telefon Ab L M One-bit correlator rake receiver
US7545854B1 (en) * 1998-09-01 2009-06-09 Sirf Technology, Inc. Doppler corrected spread spectrum matched filter
US7711038B1 (en) 1998-09-01 2010-05-04 Sirf Technology, Inc. System and method for despreading in a spread spectrum matched filter
US6693953B2 (en) 1998-09-30 2004-02-17 Skyworks Solutions, Inc. Adaptive wireless communication receiver
US6236864B1 (en) * 1998-11-27 2001-05-22 Nortel Networks Limited CDMA transmit peak power reduction
US6448925B1 (en) 1999-02-04 2002-09-10 Conexant Systems, Inc. Jamming detection and blanking for GPS receivers
US6606349B1 (en) 1999-02-04 2003-08-12 Sirf Technology, Inc. Spread spectrum receiver performance improvement
US6389064B1 (en) * 1999-03-08 2002-05-14 International Business Machines Corporation Modems, methods, and computer program products for identifying a signaling alphabet in variance with an ideal alphabet due to digital impairments
US6577271B1 (en) 1999-03-30 2003-06-10 Sirf Technology, Inc Signal detector employing coherent integration
US6304216B1 (en) * 1999-03-30 2001-10-16 Conexant Systems, Inc. Signal detector employing correlation analysis of non-uniform and disjoint sample segments
US6351486B1 (en) * 1999-05-25 2002-02-26 Conexant Systems, Inc. Accelerated selection of a base station in a wireless communication system
SG90052A1 (en) * 1999-05-28 2002-07-23 Oki Techno Ct Singapore Pte A cdma receiver
DE19933542A1 (en) 1999-07-16 2001-01-25 Siemens Ag Method and device for the synchronization of mobile radio receivers in a mobile radio system
US6788655B1 (en) 2000-04-18 2004-09-07 Sirf Technology, Inc. Personal communications device with ratio counter
US6714158B1 (en) 2000-04-18 2004-03-30 Sirf Technology, Inc. Method and system for data detection in a global positioning system satellite receiver
US7885314B1 (en) 2000-05-02 2011-02-08 Kenneth Scott Walley Cancellation system and method for a wireless positioning system
US6778136B2 (en) 2001-12-13 2004-08-17 Sirf Technology, Inc. Fast acquisition of GPS signal
US6728301B1 (en) 2000-07-07 2004-04-27 Texas Instruments Incorporated System and method for automatic frequency control in spread spectrum communications
WO2002008866A2 (en) 2000-07-21 2002-01-31 Itron, Inc. Spread spectrum meter reading system utilizing low-speed/high-power frequency hopping
US20040202137A1 (en) * 2001-01-26 2004-10-14 Gerakoulis Diakoumis Parissis Method for CDMA to packet-switching interface code division switching in a terrestrial wireless system
US7003102B2 (en) * 2001-10-10 2006-02-21 Pulse Engineering, Inc. Telecommunications gateway and method
FR2849407B1 (en) 2002-12-27 2005-02-04 Michelin Soc Tech ELASTIC AXLE WITH SELF BLOCKING FASTENING
US7417557B2 (en) * 2003-05-07 2008-08-26 Itron, Inc. Applications for a low cost receiver in an automatic meter reading system
US20050209762A1 (en) * 2004-03-18 2005-09-22 Ford Global Technologies, Llc Method and apparatus for controlling a vehicle using an object detection system and brake-steer
US8027419B2 (en) * 2005-04-08 2011-09-27 Ibiquity Digital Corporation Method for alignment of analog and digital audio in a hybrid radio waveform
DE102005056933A1 (en) * 2005-11-29 2007-05-31 Prof. Dr. Horst Ziegler und Partner GbR (vertretungsberechtigter Gesellschafter: Prof. Dr. Horst Ziegler 33100 Paderborn) Radio transmission system
US7688878B2 (en) * 2006-03-16 2010-03-30 The Boeing Company Method and device of peak detection in preamble synchronization for direct sequence spread spectrum communication
US8312103B2 (en) 2006-08-31 2012-11-13 Itron, Inc. Periodic balanced communication node and server assignment
US7847536B2 (en) 2006-08-31 2010-12-07 Itron, Inc. Hall sensor with temperature drift control
US8024724B2 (en) * 2006-08-31 2011-09-20 Itron, Inc. Firmware download
US8049642B2 (en) 2006-09-05 2011-11-01 Itron, Inc. Load side voltage sensing for AMI metrology
US9354083B2 (en) * 2006-09-15 2016-05-31 Itron, Inc. Home area networking (HAN) with low power considerations for battery devices
US7843834B2 (en) * 2006-09-15 2010-11-30 Itron, Inc. Use of minimal propagation delay path to optimize a mesh network
US8787210B2 (en) 2006-09-15 2014-07-22 Itron, Inc. Firmware download with adaptive lost packet recovery
US8212687B2 (en) 2006-09-15 2012-07-03 Itron, Inc. Load side voltage sensing for AMI metrology
US8138944B2 (en) 2006-09-15 2012-03-20 Itron, Inc. Home area networking (HAN) with handheld for diagnostics
US7843391B2 (en) 2006-09-15 2010-11-30 Itron, Inc. RF local area network antenna design
US8055461B2 (en) 2006-09-15 2011-11-08 Itron, Inc. Distributing metering responses for load balancing an AMR network
US8384558B2 (en) * 2006-10-19 2013-02-26 Itron, Inc. Extending contact life in remote disconnect applications
US10200476B2 (en) 2011-10-18 2019-02-05 Itron, Inc. Traffic management and remote configuration in a gateway-based network
US9419888B2 (en) 2011-12-22 2016-08-16 Itron, Inc. Cell router failure detection in a mesh network
EP2829895B1 (en) * 2012-03-22 2019-11-27 Furuno Electric Co., Ltd. Signal search method, signal search program, signal search device, global navigation satellite system (gnss) signal receiver, and information terminal
US10833799B2 (en) 2018-05-31 2020-11-10 Itron Global Sarl Message correction and dynamic correction adjustment for communication systems

Family Cites Families (45)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2124320C1 (en) * 1971-05-17 1978-04-27 Siemens Ag, 1000 Berlin Und 8000 Muenchen Electrical circuit for generating a large number of different codes
US4225935A (en) * 1977-08-30 1980-09-30 Sperry Corporation Coding method and system with enhanced security
US4295204A (en) * 1979-05-31 1981-10-13 Sunstein Drew E Programmable correlator
NL183862C (en) * 1980-02-04 1989-02-01 Philips Nv TELECOMMUNICATIONS SYSTEM WITH CODED MESSAGE TRANSMISSION.
US4730340A (en) * 1980-10-31 1988-03-08 Harris Corp. Programmable time invariant coherent spread symbol correlator
US4707839A (en) * 1983-09-26 1987-11-17 Harris Corporation Spread spectrum correlator for recovering CCSK data from a PN spread MSK waveform
US4567588A (en) * 1984-03-23 1986-01-28 Sangamo Weston, Inc. Synchronization system for use in direct sequence spread spectrum signal receiver
DE3633769A1 (en) * 1986-10-03 1988-04-14 Endress Hauser Gmbh Co DIGITAL CORRELATOR
US4841544A (en) * 1987-05-14 1989-06-20 The Charles Stark Draper Laboratory, Inc. Digital direct sequence spread spectrum receiver
US4903225A (en) * 1988-12-23 1990-02-20 Ampex Corporation High speed digital data correlator having a synchronous pipelined full adder cell array
JP2718978B2 (en) * 1989-03-02 1998-02-25 株式会社トキメック Data transmission method
US5146471A (en) * 1989-03-23 1992-09-08 Echelon Systems Corporation Correlator for spread spectrum communications systems
FR2653286A1 (en) * 1989-10-12 1991-04-19 Europ Agence Spatiale CODE ACQUISITION METHOD AND CIRCUIT FOR A SPREAD SPECTRUM SIGNAL RECEIVER.
US5216696A (en) * 1989-12-22 1993-06-01 Comsat Laboratories Programmable noise bandwidth reduction by means of digital averaging
US5031192A (en) * 1990-02-05 1991-07-09 United States Of America As Represented By The Secretary Of The Air Force Synthetic demodulation of spread spectrum signals
US5157686A (en) * 1990-05-24 1992-10-20 Cylink Corporation Method and apparatus for the modulation of spread spectrum radio signals
US5166952A (en) * 1990-05-24 1992-11-24 Cylink Corporation Method and apparatus for the reception and demodulation of spread spectrum radio signals
US5253268A (en) * 1990-05-24 1993-10-12 Cylink Corporation Method and apparatus for the correlation of sample bits of spread spectrum radio signals
US5377232A (en) * 1992-01-09 1994-12-27 Cellnet Data Systems, Inc. Frequency synchronized bidirectional radio system
US5276706A (en) * 1992-05-20 1994-01-04 Hughes Aircraft Company System and method for minimizing frequency offsets between digital communication stations
JP2771757B2 (en) * 1992-06-29 1998-07-02 三菱電機株式会社 Data demodulation circuit of receiver for spread spectrum communication
JP2561232B2 (en) * 1992-08-31 1996-12-04 双葉電子工業株式会社 Spectrum spread receiver and spectrum spread transmitter / receiver using this device
US5291517A (en) * 1992-12-31 1994-03-01 Gte Government Systems Corporation Carrier freuency corrector for a DSSS communication system
US5303257A (en) * 1992-12-31 1994-04-12 Gte Government Systems Corporation Carrier frequency correction for a DSSS communication system
US5305349A (en) * 1993-04-29 1994-04-19 Ericsson Ge Mobile Communications Inc. Quantized coherent rake receiver
KR100205529B1 (en) * 1993-10-14 1999-07-01 오보시 코지 Correlation detector and communication apparatus
US5422909A (en) * 1993-11-30 1995-06-06 Motorola, Inc. Method and apparatus for multi-phase component downconversion
US5414730A (en) * 1993-12-21 1995-05-09 Unisys Corporation Asynchronous samples data demodulation system
JP2661534B2 (en) * 1993-12-28 1997-10-08 日本電気株式会社 Spread spectrum receiving method and receiver
US5719899A (en) * 1994-02-25 1998-02-17 U.S. Philips Corporation Multiple access digital transmission system and a radio base station and a receiver for use in such a system
US5511090A (en) * 1994-03-17 1996-04-23 Tatung Telecom Corporation Wireless frequency-division-multiple-access direct sequence spread spectrum telephone system
US5577066A (en) * 1994-05-13 1996-11-19 Stanford Telecommunications, Inc. Charge-coupled-device based data-in-voice modem
US5521938A (en) * 1994-07-01 1996-05-28 Motorola, Inc. Apparatus for performing frequency conversion in a communication system
GB2292053B (en) * 1994-07-28 1998-08-26 Roke Manor Research Synchronisation apparatus
US5623511A (en) * 1994-08-30 1997-04-22 Lucent Technologies Inc. Spread spectrum code pulse position modulated receiver having delay spread compensation
US5596601A (en) * 1994-08-30 1997-01-21 Lucent Technologies Inc. Method and apparatus for spread spectrum code pulse position modulation
US5754584A (en) * 1994-09-09 1998-05-19 Omnipoint Corporation Non-coherent spread-spectrum continuous-phase modulation communication system
US5574721A (en) * 1994-12-09 1996-11-12 Stanford Telecommunications, Inc. Orthogonal code tracking system having phantom carrier signal
US5691974A (en) * 1995-01-04 1997-11-25 Qualcomm Incorporated Method and apparatus for using full spectrum transmitted power in a spread spectrum communication system for tracking individual recipient phase, time and energy
US5640416A (en) * 1995-06-07 1997-06-17 Comsat Corporation Digital downconverter/despreader for direct sequence spread spectrum communications system
US5577025A (en) * 1995-06-30 1996-11-19 Qualcomm Incorporated Signal acquisition in a multi-user communication system using multiple walsh channels
US5805648A (en) * 1995-07-31 1998-09-08 Qualcomm Incorporated Method and apparatus for performing search acquisition in a CDMA communication system
JPH09135150A (en) * 1995-11-07 1997-05-20 Toshiba Corp Digital filter and receiving device
US5805584A (en) * 1996-02-23 1998-09-08 L-3 Communications Corporation Multi-user acquisition procedure for point-to-multipoint synchronous CDMA systems
US5787125A (en) * 1996-05-06 1998-07-28 Motorola, Inc. Apparatus for deriving in-phase and quadrature-phase baseband signals from a communication signal

Also Published As

Publication number Publication date
MXPA00000192A (en) 2002-04-24
EP0992119A1 (en) 2000-04-12
EP0992119A4 (en) 2003-06-04
AU751872B2 (en) 2002-08-29
BR9810300A (en) 2002-02-05
AU8156398A (en) 1999-01-04
US6047016A (en) 2000-04-04
CA2294218C (en) 2008-02-19
WO1998059427A1 (en) 1998-12-30

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Legal Events

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EEER Examination request
MKEX Expiry

Effective date: 20180619

MKEX Expiry

Effective date: 20180619