WO2002011348A3 - Frequency hopping spread spectrum system with high sensitivity tracking and synchronization for frequency unstable signals - Google Patents

Frequency hopping spread spectrum system with high sensitivity tracking and synchronization for frequency unstable signals Download PDF

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Publication number
WO2002011348A3
WO2002011348A3 PCT/US2001/024058 US0124058W WO0211348A3 WO 2002011348 A3 WO2002011348 A3 WO 2002011348A3 US 0124058 W US0124058 W US 0124058W WO 0211348 A3 WO0211348 A3 WO 0211348A3
Authority
WO
WIPO (PCT)
Prior art keywords
signal
frequency
spread spectrum
preamble
synchronization
Prior art date
Application number
PCT/US2001/024058
Other languages
French (fr)
Other versions
WO2002011348A2 (en
Inventor
Mark Kendall Cornwall
Harry Price Haas
Original Assignee
Itron Inc
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 Itron Inc filed Critical Itron Inc
Priority to DE60142477T priority Critical patent/DE60142477D1/en
Priority to AU2001284691A priority patent/AU2001284691B2/en
Priority to JP2002515757A priority patent/JP2004505544A/en
Priority to AT01963768T priority patent/ATE472859T1/en
Priority to CA002416312A priority patent/CA2416312C/en
Priority to EP01963768A priority patent/EP1305923B1/en
Priority to MXPA03000916A priority patent/MXPA03000916A/en
Priority to KR10-2003-7001391A priority patent/KR20030026993A/en
Priority to BR0112854-0A priority patent/BR0112854A/en
Priority to AU8469101A priority patent/AU8469101A/en
Publication of WO2002011348A2 publication Critical patent/WO2002011348A2/en
Publication of WO2002011348A3 publication Critical patent/WO2002011348A3/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/30—Systems using multi-frequency codes wherein each code element is represented by a combination of frequencies
    • 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
    • H04B1/713—Spread spectrum techniques using frequency hopping
    • H04B1/7156—Arrangements for sequence synchronisation
    • 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
    • H04B1/713—Spread spectrum techniques using frequency hopping
    • 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
    • H04B1/709—Correlator structure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices

Abstract

A wireless spread spectrum communication system (14) for transmitting data includes a plurality of end point transmitters (40) and at least one receiver (42). The end point transmitters transmit data via a frequency hopped spread spectrum signal where the transmitting signal is sent without the benefit of frequency stabilization. The receiver (42) is responsive to the frequency hopping spread spectrum signals and includes a correlator and a signal processor (52). The correlator samples at least a first portion of a preamble of the signal and correlates the portion of the preamble with known preamble pattern to determine a probalitity of correlation. The signal processor (52) applied a Fast Fourier Transform algorithm to the signal in response to the probability of correlation to track a narrowband frequency of the signal based on at least a second portion of the preamble and to decode data encoded within the signal subsequent to the preamble.
PCT/US2001/024058 2000-08-01 2001-08-01 Frequency hopping spread spectrum system with high sensitivity tracking and synchronization for frequency unstable signals WO2002011348A2 (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
DE60142477T DE60142477D1 (en) 2000-08-01 2001-08-01 FREQUENCY VOLTAGE SPREADING SYSTEM WITH RUNNING HIGH SENSITIVITY, AND SYNCHRONIZATION FOR FREQUENCY LABEL SIGNALS
AU2001284691A AU2001284691B2 (en) 2000-08-01 2001-08-01 Frequency hopping spread spectrum system with high sensitivity tracking and synchronization for frequency unstable signals
JP2002515757A JP2004505544A (en) 2000-08-01 2001-08-01 Frequency Hopping Spread Spectrum System Using Sensitive Tracking and Synchronization for Frequency Unstable Signals
AT01963768T ATE472859T1 (en) 2000-08-01 2001-08-01 FREQUENCY VOLTAGE SPREAD SPECTRUM SYSTEM WITH HIGH SENSITIVITY TRACKING AND SYNCHRONIZATION FOR FREQUENCY LABEL SIGNALS
CA002416312A CA2416312C (en) 2000-08-01 2001-08-01 Frequency hopping spread spectrum system with high sensitivity tracking and synchronization for frequency unstable signals
EP01963768A EP1305923B1 (en) 2000-08-01 2001-08-01 Frequency hopping spread spectrum system with high sensitivity tracking and synchronization for frequency unstable signals
MXPA03000916A MXPA03000916A (en) 2000-08-01 2001-08-01 Frequency hopping spread spectrum system with high sensitivity tracking and synchronization for frequency unstable signals.
KR10-2003-7001391A KR20030026993A (en) 2000-08-01 2001-08-01 Frequency hopping spread spectrum system with high sensitivity tracking and synchronization for frequency unstable signals
BR0112854-0A BR0112854A (en) 2000-08-01 2001-08-01 Wireless spread spectrum communication system to transmit data
AU8469101A AU8469101A (en) 2000-08-01 2001-08-01 Frequency hopping spread spectrum system with high sensitivity tracking and synchronization for frequency unstable signals

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US22225600P 2000-08-01 2000-08-01
US60/222,256 2000-08-01

Publications (2)

Publication Number Publication Date
WO2002011348A2 WO2002011348A2 (en) 2002-02-07
WO2002011348A3 true WO2002011348A3 (en) 2002-03-28

Family

ID=22831505

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/024058 WO2002011348A2 (en) 2000-08-01 2001-08-01 Frequency hopping spread spectrum system with high sensitivity tracking and synchronization for frequency unstable signals

Country Status (12)

Country Link
US (2) US6934316B2 (en)
EP (1) EP1305923B1 (en)
JP (1) JP2004505544A (en)
KR (1) KR20030026993A (en)
AT (1) ATE472859T1 (en)
AU (2) AU2001284691B2 (en)
BR (1) BR0112854A (en)
CA (1) CA2416312C (en)
DE (1) DE60142477D1 (en)
ES (1) ES2349698T3 (en)
MX (1) MXPA03000916A (en)
WO (1) WO2002011348A2 (en)

Families Citing this family (95)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7061398B2 (en) * 1999-08-16 2006-06-13 Bs&B Safety Systems Limited Two-way wide area telemetry
CA2416309A1 (en) * 2000-08-01 2002-02-07 Itron, Inc. Low power dual protocol transceiver
US6999087B2 (en) * 2002-03-12 2006-02-14 Sun Microsystems, Inc. Dynamically adjusting sample density in a graphics system
US7020178B2 (en) * 2002-06-26 2006-03-28 Elster Electricity, Llc Microprocessor decoder frequency hopping spread spectrum communications receiver
US20040004951A1 (en) 2002-07-05 2004-01-08 Interdigital Technology Corporation Method for performing wireless switching
US7359448B2 (en) * 2002-08-21 2008-04-15 Lear Corporation Remote transmitter system and method
EP1411738A1 (en) * 2002-10-15 2004-04-21 Lucent Technologies Inc. A telecommunications base station, and a method of detection by a base station of a sequence of data representing a request for call connection from a mobile
GB0229763D0 (en) * 2002-12-23 2003-01-29 Renishaw Plc Signal transmission system for a trigger probe
US7154938B2 (en) * 2002-12-31 2006-12-26 Itron, Inc. RF communications system utilizing digital modulation to transmit and receive data
US7417557B2 (en) * 2003-05-07 2008-08-26 Itron, Inc. Applications for a low cost receiver in an automatic meter reading system
US7230972B2 (en) * 2003-05-07 2007-06-12 Itron, Inc. Method and system for collecting and transmitting data in a meter reading system
US7039412B2 (en) * 2003-08-08 2006-05-02 Intel Corporation Method and apparatus for transmitting wireless signals on multiple frequency channels in a frequency agile network
US7346030B2 (en) * 2003-09-26 2008-03-18 Itron, Inc. Processing gain for wireless communication, such as in automatic data collection systems for public utility data collection
US7283916B2 (en) * 2004-07-02 2007-10-16 Itron, Inc. Distributed utility monitoring, such as for monitoring the quality or existence of a electrical, gas, or water utility
US7079962B2 (en) 2004-10-20 2006-07-18 Itron, Inc. Automated utility meter reading system with variable bandwidth receiver
US7535378B2 (en) * 2005-09-09 2009-05-19 Itron, Inc. RF meter reading system
US20070183318A1 (en) * 2006-02-03 2007-08-09 Matthew Johnson Outage notification, such as fixed network positive outage notification
US7830874B2 (en) * 2006-02-03 2010-11-09 Itron, Inc. Versatile radio packeting for automatic meter reading systems
US20070183369A1 (en) * 2006-02-03 2007-08-09 Bruce Angelis System for verifying restored outages, such as in the field outage restoration of public utilities using automatic meter reading (AMR)
US7589618B2 (en) * 2006-04-25 2009-09-15 Diorio Christopher J RFID readers systems and methods for hopping away from a frequency channel with RF interference
US7592897B2 (en) * 2006-04-25 2009-09-22 Impinj, Inc. RFID readers system and methods for early hopping out of a frequency channel in the presence of RF interference
US8243773B2 (en) 2006-05-26 2012-08-14 Itron, Inc. Clear-channel system and related applications
US8350717B2 (en) * 2006-06-05 2013-01-08 Neptune Technology Group, Inc. Fixed network for an automatic utility meter reading system
JP4206109B2 (en) * 2006-07-31 2009-01-07 東芝テック株式会社 Wireless tag reader
GB0622899D0 (en) 2006-11-16 2006-12-27 Liquavista Bv Driving of electro-optic displays
US20080180275A1 (en) * 2007-01-30 2008-07-31 Cimarron Systems, Llc Communication System For Multi-Tiered Network
US20080285628A1 (en) * 2007-05-17 2008-11-20 Gizis Alexander C Communications systems and methods for remotely controlled vehicles
US7808938B2 (en) * 2007-05-22 2010-10-05 Thomas Meek Very narrow band multipoint communication system
US8890505B2 (en) 2007-08-28 2014-11-18 Causam Energy, Inc. System and method for estimating and providing dispatchable operating reserve energy capacity through use of active load management
US8145361B2 (en) * 2007-08-28 2012-03-27 Consert, Inc. System and method for manipulating controlled energy using devices to manage customer bills
US9177323B2 (en) 2007-08-28 2015-11-03 Causam Energy, Inc. Systems and methods for determining and utilizing customer energy profiles for load control for individual structures, devices, and aggregation of same
US20090063228A1 (en) * 2007-08-28 2009-03-05 Forbes Jr Joseph W Method and apparatus for providing a virtual electric utility
US8805552B2 (en) 2007-08-28 2014-08-12 Causam Energy, Inc. Method and apparatus for actively managing consumption of electric power over an electric power grid
US8260470B2 (en) 2007-08-28 2012-09-04 Consert, Inc. System and method for selective disconnection of electrical service to end customers
US8131403B2 (en) 2007-08-28 2012-03-06 Consert, Inc. System and method for determining and utilizing customer energy profiles for load control for individual structures, devices, and aggregation of same
US8806239B2 (en) 2007-08-28 2014-08-12 Causam Energy, Inc. System, method, and apparatus for actively managing consumption of electric power supplied by one or more electric power grid operators
US8542685B2 (en) 2007-08-28 2013-09-24 Consert, Inc. System and method for priority delivery of load management messages on IP-based networks
US9130402B2 (en) 2007-08-28 2015-09-08 Causam Energy, Inc. System and method for generating and providing dispatchable operating reserve energy capacity through use of active load management
US7715951B2 (en) * 2007-08-28 2010-05-11 Consert, Inc. System and method for managing consumption of power supplied by an electric utility
US8700187B2 (en) 2007-08-28 2014-04-15 Consert Inc. Method and apparatus for actively managing consumption of electric power supplied by one or more electric utilities
US8996183B2 (en) 2007-08-28 2015-03-31 Consert Inc. System and method for estimating and providing dispatchable operating reserve energy capacity through use of active load management
US8527107B2 (en) 2007-08-28 2013-09-03 Consert Inc. Method and apparatus for effecting controlled restart of electrical servcie with a utility service area
US20100235008A1 (en) * 2007-08-28 2010-09-16 Forbes Jr Joseph W System and method for determining carbon credits utilizing two-way devices that report power usage data
US10295969B2 (en) 2007-08-28 2019-05-21 Causam Energy, Inc. System and method for generating and providing dispatchable operating reserve energy capacity through use of active load management
US8436744B2 (en) * 2009-01-29 2013-05-07 Itron, Inc. Prioritized collection of meter readings
EP2427949B1 (en) 2009-05-07 2020-04-08 Virginia Electric and Power Company Voltage conservation using advanced metering infrastructure and substation centralized voltage control
MX2011011824A (en) 2009-05-08 2011-12-06 Consert Inc System and method for estimating and providing dispatchable operating reserve energy capacity through use of active load management.
US8581695B2 (en) * 2009-05-27 2013-11-12 Grant B. Carlson Channel-switching remote controlled barrier opening system
MX2012004186A (en) * 2009-10-09 2012-07-17 Consert Inc Apparatus and method for controlling communications to and from utility service points.
US8269650B2 (en) 2010-04-14 2012-09-18 Itron, Inc. Meter right sizing
DE102010030585B4 (en) * 2010-06-28 2012-08-09 Airbus Operations Gmbh Static mesh network, aircraft and method of data communication
EP2469783B1 (en) * 2010-12-23 2017-12-13 The Swatch Group Research and Development Ltd. FSK radio signal receiver with high-sensitivity demodulator and method for operating said receiver
US8842712B2 (en) 2011-03-24 2014-09-23 Gregory C. Hancock Methods and apparatuses for reception of frequency-hopping spread spectrum radio transmissions
EP2584709B1 (en) * 2011-10-21 2017-12-13 Itron Global SARL Multiple protocol receiver
US9207698B2 (en) 2012-06-20 2015-12-08 Causam Energy, Inc. Method and apparatus for actively managing electric power over an electric power grid
US9465398B2 (en) 2012-06-20 2016-10-11 Causam Energy, Inc. System and methods for actively managing electric power over an electric power grid
US9461471B2 (en) 2012-06-20 2016-10-04 Causam Energy, Inc System and methods for actively managing electric power over an electric power grid and providing revenue grade date usable for settlement
US9563215B2 (en) 2012-07-14 2017-02-07 Causam Energy, Inc. Method and apparatus for actively managing electric power supply for an electric power grid
US9513648B2 (en) 2012-07-31 2016-12-06 Causam Energy, Inc. System, method, and apparatus for electric power grid and network management of grid elements
US8849715B2 (en) 2012-10-24 2014-09-30 Causam Energy, Inc. System, method, and apparatus for settlement for participation in an electric power grid
US8983669B2 (en) 2012-07-31 2015-03-17 Causam Energy, Inc. System, method, and data packets for messaging for electric power grid elements over a secure internet protocol network
US10861112B2 (en) 2012-07-31 2020-12-08 Causam Energy, Inc. Systems and methods for advanced energy settlements, network-based messaging, and applications supporting the same on a blockchain platform
US10475138B2 (en) 2015-09-23 2019-11-12 Causam Energy, Inc. Systems and methods for advanced energy network
US9503979B2 (en) * 2012-11-30 2016-11-22 Google Technology Holdings LLC Delivering data to a wireless station
US9451394B2 (en) 2012-12-31 2016-09-20 Elwha Llc Cost-effective mobile connectivity protocols
US8965288B2 (en) 2012-12-31 2015-02-24 Elwha Llc Cost-effective mobile connectivity protocols
US9635605B2 (en) 2013-03-15 2017-04-25 Elwha Llc Protocols for facilitating broader access in wireless communications
US9781664B2 (en) 2012-12-31 2017-10-03 Elwha Llc Cost-effective mobile connectivity protocols
US9876762B2 (en) 2012-12-31 2018-01-23 Elwha Llc Cost-effective mobile connectivity protocols
US9980114B2 (en) 2013-03-15 2018-05-22 Elwha Llc Systems and methods for communication management
US9832628B2 (en) * 2012-12-31 2017-11-28 Elwha, Llc Cost-effective mobile connectivity protocols
US9713013B2 (en) 2013-03-15 2017-07-18 Elwha Llc Protocols for providing wireless communications connectivity maps
US9596584B2 (en) 2013-03-15 2017-03-14 Elwha Llc Protocols for facilitating broader access in wireless communications by conditionally authorizing a charge to an account of a third party
US9678520B2 (en) 2013-03-15 2017-06-13 Dominion Resources, Inc. Electric power system control with planning of energy demand and energy efficiency using AMI-based data analysis
US9847639B2 (en) 2013-03-15 2017-12-19 Dominion Energy, Inc. Electric power system control with measurement of energy demand and energy efficiency
US9807582B2 (en) 2013-03-15 2017-10-31 Elwha Llc Protocols for facilitating broader access in wireless communications
US9563218B2 (en) 2013-03-15 2017-02-07 Dominion Resources, Inc. Electric power system control with measurement of energy demand and energy efficiency using t-distributions
US9693214B2 (en) 2013-03-15 2017-06-27 Elwha Llc Protocols for facilitating broader access in wireless communications
US9813887B2 (en) 2013-03-15 2017-11-07 Elwha Llc Protocols for facilitating broader access in wireless communications responsive to charge authorization statuses
US9781554B2 (en) 2013-03-15 2017-10-03 Elwha Llc Protocols for facilitating third party authorization for a rooted communication device in wireless communications
US9553453B2 (en) 2013-03-15 2017-01-24 Dominion Resources, Inc. Management of energy demand and energy efficiency savings from voltage optimization on electric power systems using AMI-based data analysis
US9706382B2 (en) 2013-03-15 2017-07-11 Elwha Llc Protocols for allocating communication services cost in wireless communications
US9706060B2 (en) 2013-03-15 2017-07-11 Elwha Llc Protocols for facilitating broader access in wireless communications
US9582020B2 (en) 2013-03-15 2017-02-28 Dominion Resources, Inc. Maximizing of energy delivery system compatibility with voltage optimization using AMI-based data control and analysis
US9843917B2 (en) 2013-03-15 2017-12-12 Elwha, Llc Protocols for facilitating charge-authorized connectivity in wireless communications
US9866706B2 (en) 2013-03-15 2018-01-09 Elwha Llc Protocols for facilitating broader access in wireless communications
US10732656B2 (en) 2015-08-24 2020-08-04 Dominion Energy, Inc. Systems and methods for stabilizer control
GB201613075D0 (en) 2016-07-28 2016-09-14 Qinetiq Ltd Method and apparatus for the reception of a signal
CA3088171A1 (en) 2018-01-12 2019-07-18 Insight Energy Ventures, Llc Systems and methods of capturing usage data from an amr device
EP3591853B1 (en) * 2018-07-02 2021-09-01 Semtech Corporation Low-power, frequency-hopping, wide-area network with random medium access
EP3697003A1 (en) * 2019-02-13 2020-08-19 ABB Schweiz AG Radio-based detector and method to protect against unpredictable interference in industrial wireless communications
WO2020239180A1 (en) * 2019-05-29 2020-12-03 Kamstrup A/S Sensitive and robust frame synchronization of radio frequency signals
US11728692B2 (en) 2020-05-19 2023-08-15 Powermat Technologies Ltd. Modem design for wireless power transfer
CN114726400B (en) * 2022-03-31 2023-08-04 成都信息工程大学 Frequency hopping method for FHSS signal of blind frequency hopping pattern
DE102022113117B3 (en) 2022-05-24 2023-10-05 Oliver Bartels Particularly secure multi-carrier communication device for high data rates

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5668828A (en) * 1992-05-08 1997-09-16 Sanconix, Inc. Enhanced frequency agile radio
US5870426A (en) * 1992-08-20 1999-02-09 Nexus 1994 Limited Grouping of spread spectrum acknowledgement pagers to minimize transmission collisions

Family Cites Families (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4752939A (en) * 1986-09-03 1988-06-21 Hughes Aircraft Company Hidden preamble for frequency hopped synchronization
US5121408A (en) * 1989-10-16 1992-06-09 Hughes Aircraft Company Synchronization for entry to a network in a frequency hopping communication system
US5056107A (en) * 1990-02-15 1991-10-08 Iris Systems Inc. Radio communication network for remote data generating stations
US5365550A (en) * 1991-07-18 1994-11-15 Pulse Electronics, Inc. Initial synchronization and tracking circuits for spread spectrum receivers
US5287384A (en) * 1992-10-15 1994-02-15 Lxe Inc. Frequency hopping spread spectrum data communications system
US5734966A (en) * 1995-01-20 1998-03-31 Diablo Research Corporation Wireless communication system for adapting to frequency drift
TW347626B (en) * 1995-03-27 1998-12-11 Sanyo Electric Co Spectrum diffusion signal receiver
GB2300502B (en) * 1995-04-11 1998-05-27 Int Mobile Satellite Org An electronic circuit for and a method of decoding a signal
US6052406A (en) * 1997-05-02 2000-04-18 Itt Manufacturing Enterprises, Inc. Frequency hopping synchronization and tracking in a digital communication system
JP2856198B2 (en) * 1997-06-11 1999-02-10 日本電気株式会社 Spread spectrum receiver
US5914672A (en) * 1997-06-13 1999-06-22 Whisper Communications Incorporated System for field installation of a remote meter interface
US6263009B1 (en) * 1997-06-23 2001-07-17 Cellnet Data Systems, Inc. Acquiring a spread spectrum signal
US6052407A (en) * 1997-10-01 2000-04-18 Lucent Technologies Inc. Apparatus and method for detection frequency hopping patterns embedded in radio frequency noise
US6188715B1 (en) * 1998-04-09 2001-02-13 Andrzej Partyka Frequency hopping system for intermittent transmission with receiver using individual tracking, FFT, and authentication
US6618452B1 (en) * 1998-06-08 2003-09-09 Telefonaktiebolaget Lm Ericsson (Publ) Burst carrier frequency synchronization and iterative frequency-domain frame synchronization for OFDM
JP3622535B2 (en) * 1998-11-09 2005-02-23 ソニー株式会社 Data transmission apparatus and data transmission method
US6298227B1 (en) * 1998-12-22 2001-10-02 Ericsson Inc. Method and apparatus for frequency conversion for a receiver with a limited-accuracy oscillator
EP1063824B1 (en) * 1999-06-22 2006-08-02 Matsushita Electric Industrial Co., Ltd. Symbol synchronisation in multicarrier receivers
US6782037B1 (en) * 1999-07-27 2004-08-24 Lucent Technologies Inc. Demodulation method for receiver
WO2002008866A2 (en) * 2000-07-21 2002-01-31 Itron, Inc. Spread spectrum meter reading system utilizing low-speed/high-power frequency hopping
US6466958B1 (en) * 2000-09-12 2002-10-15 Interstate Electronics Corporation, A Division Of L3 Communications Corporation Parallel frequency searching in an acquisition correlator
US6714605B2 (en) * 2002-04-22 2004-03-30 Cognio, Inc. System and method for real-time spectrum analysis in a communication device
US7035593B2 (en) * 2003-07-28 2006-04-25 Cognio, Inc. Signal classification methods for scanning receiver and other applications
US7079962B2 (en) * 2004-10-20 2006-07-18 Itron, Inc. Automated utility meter reading system with variable bandwidth receiver

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5668828A (en) * 1992-05-08 1997-09-16 Sanconix, Inc. Enhanced frequency agile radio
US5870426A (en) * 1992-08-20 1999-02-09 Nexus 1994 Limited Grouping of spread spectrum acknowledgement pagers to minimize transmission collisions

Also Published As

Publication number Publication date
DE60142477D1 (en) 2010-08-12
ES2349698T3 (en) 2011-01-10
KR20030026993A (en) 2003-04-03
US7577181B2 (en) 2009-08-18
JP2004505544A (en) 2004-02-19
US20060056493A1 (en) 2006-03-16
EP1305923A4 (en) 2007-04-04
CA2416312C (en) 2008-02-12
MXPA03000916A (en) 2003-10-14
US6934316B2 (en) 2005-08-23
EP1305923B1 (en) 2010-06-30
CA2416312A1 (en) 2002-02-07
EP1305923A2 (en) 2003-05-02
WO2002011348A2 (en) 2002-02-07
BR0112854A (en) 2003-08-26
US20020071478A1 (en) 2002-06-13
AU8469101A (en) 2002-02-13
ATE472859T1 (en) 2010-07-15
AU2001284691B2 (en) 2005-09-22

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