IL149065A0 - Method and apparatus for eliminating the effects of frequency offsets in a digital communication system - Google Patents

Method and apparatus for eliminating the effects of frequency offsets in a digital communication system

Info

Publication number
IL149065A0
IL149065A0 IL14906500A IL14906500A IL149065A0 IL 149065 A0 IL149065 A0 IL 149065A0 IL 14906500 A IL14906500 A IL 14906500A IL 14906500 A IL14906500 A IL 14906500A IL 149065 A0 IL149065 A0 IL 149065A0
Authority
IL
Israel
Prior art keywords
eliminating
effects
communication system
digital communication
frequency offsets
Prior art date
Application number
IL14906500A
Other languages
English (en)
Original Assignee
Atheros Comm 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 Atheros Comm Inc filed Critical Atheros Comm Inc
Publication of IL149065A0 publication Critical patent/IL149065A0/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
    • H04L27/14—Demodulator circuits; Receiver circuits
    • H04L27/144—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements
    • H04L27/148—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements using filters, including PLL-type filters
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
    • H03J7/02—Automatic frequency control
    • H03J7/04—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant
    • 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
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/02—Speed or phase control by the received code signals, the signals containing no special synchronisation information
    • H04L7/033—Speed or phase control by the received code signals, the signals containing no special synchronisation information using the transitions of the received signal to control the phase of the synchronising-signal-generating means, e.g. using a phase-locked loop
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0018—Arrangements at the transmitter end
    • H04L2027/0022—Arrangements at the transmitter end using the carrier of the associated receiver of a transceiver

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Transceivers (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
IL14906500A 1999-10-12 2000-10-11 Method and apparatus for eliminating the effects of frequency offsets in a digital communication system IL149065A0 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/416,098 US8363757B1 (en) 1999-10-12 1999-10-12 Method and apparatus for eliminating the effects of frequency offsets in a digital communication system
PCT/US2000/041164 WO2001028150A2 (en) 1999-10-12 2000-10-11 Method and apparatus for eliminating the effects of frequency offsets in a digital communication system

Publications (1)

Publication Number Publication Date
IL149065A0 true IL149065A0 (en) 2002-11-10

Family

ID=23648523

Family Applications (1)

Application Number Title Priority Date Filing Date
IL14906500A IL149065A0 (en) 1999-10-12 2000-10-11 Method and apparatus for eliminating the effects of frequency offsets in a digital communication system

Country Status (8)

Country Link
US (3) US8363757B1 (xx)
EP (1) EP1221234A2 (xx)
JP (1) JP4874485B2 (xx)
AU (1) AU2613701A (xx)
CA (2) CA2825703C (xx)
IL (1) IL149065A0 (xx)
TW (1) TW533720B (xx)
WO (1) WO2001028150A2 (xx)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5978379A (en) 1997-01-23 1999-11-02 Gadzoox Networks, Inc. Fiber channel learning bridge, learning half bridge, and protocol
US8363757B1 (en) 1999-10-12 2013-01-29 Qualcomm Incorporated Method and apparatus for eliminating the effects of frequency offsets in a digital communication system
US7269394B2 (en) 2002-10-02 2007-09-11 Agere Systems Inc. Frequency offset compensation for communication systems
US8374075B2 (en) * 2006-06-27 2013-02-12 John W. Bogdan Phase and frequency recovery techniques
CA2942545C (en) * 2008-02-19 2017-05-30 Elbit Systems Of America, Llc Mimo slotted aloha (msa) system
EP2256969B1 (en) * 2008-03-04 2018-08-15 NEC Corporation Signal multiplexing method, signal demultiplexing method, digital signal reference frequency correction method, multiplexer, demultiplexer, wireless communication system, and digital signal referency frequency corrector
CA2902536C (en) * 2013-02-25 2018-03-06 Itron, Inc. Radio with analog-to-digital sample rate decoupled from digital subsystem
TWI510034B (zh) * 2013-12-02 2015-11-21 Realtek Semiconductor Corp 載波頻率偏移校正方法以及機器可讀媒體
US20150162918A1 (en) * 2013-12-05 2015-06-11 Arm Limited Digital output clock generation
JP6703364B2 (ja) * 2014-04-10 2020-06-03 ザインエレクトロニクス株式会社 受信装置
US9685996B1 (en) * 2016-06-23 2017-06-20 Nxp B.V. Antenna coil tuning mechanism
WO2019146902A1 (en) * 2018-01-24 2019-08-01 Lg Electronics Inc. Method and device for transmitting ofdm signal, and method and device for receiving ofdm signal
KR102052381B1 (ko) 2018-01-24 2020-01-07 엘지전자 주식회사 Ofdm 신호 전송 방법 및 전송장치와, ofdm 신호 수신방법 및 수신장치
EP3570602B1 (en) * 2018-05-15 2021-03-24 Nxp B.V. Apparatus and methods for synchronization of transmitters
US10944535B2 (en) 2019-05-29 2021-03-09 Shure Acquisition Holdings, Inc. OFDMA baseband clock synchronization
US11070224B1 (en) * 2020-05-07 2021-07-20 Mellanox Technologies, Ltd. Method and apparatus for implementing multirate SerDes systems

Family Cites Families (70)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3911368A (en) 1974-06-20 1975-10-07 Tarczy Hornoch Zoltan Phase interpolating apparatus and method
FR2670062B1 (fr) * 1990-11-30 1993-11-12 Thomson Csf Procede de recalage des oscillateurs locaux d'un recepteur et dispositif pour la mise en óoeuvre du procede.
JP3057198B2 (ja) * 1991-06-07 2000-06-26 ソニー株式会社 無線通信方式
GB9117635D0 (en) * 1991-08-15 1991-10-02 British Telecomm Phase shifter
KR970000572B1 (ko) 1991-09-24 1997-01-13 모토로라 인코포레이티드 원격 기지국과 중앙 사이트간의 통신 신호 교환 방법 및 장치
US5261118A (en) 1991-10-04 1993-11-09 Motorola, Inc. Simulcast synchronization and equalization system and method therefor
EP0551126B1 (en) 1992-01-10 2000-08-16 Nec Corporation Simulcast radio paging system
US5206889A (en) * 1992-01-17 1993-04-27 Hewlett-Packard Company Timing interpolator
US5602881A (en) * 1992-04-24 1997-02-11 Oki Electric Industry Co., Ltd. Receiver for a digital communication system
EP0616443A3 (en) 1993-03-15 1994-10-26 Koninkl Philips Electronics Nv Telecommunication system with ranging.
GB2277232B (en) 1993-03-20 1997-06-11 Motorola Inc A communications system and a mobile radio
JPH06276244A (ja) * 1993-03-23 1994-09-30 Matsushita Commun Ind Co Ltd 移動無線装置
US5870427A (en) 1993-04-14 1999-02-09 Qualcomm Incorporated Method for multi-mode handoff using preliminary time alignment of a mobile station operating in analog mode
US5400322A (en) 1993-08-20 1995-03-21 Amati Communications Corp. Updating of bit allocations in a multicarrier modulation transmission system
GB9320874D0 (en) 1993-10-11 1993-12-01 Ici Plc Recycling of flexible foam
JP3074103B2 (ja) * 1993-11-16 2000-08-07 株式会社東芝 Ｏｆｄｍ同期復調回路
US5499236A (en) 1994-08-16 1996-03-12 Unisys Corporation Synchronous multipoint-to-point CDMA communication system
GB9418294D0 (en) * 1994-09-10 1994-10-26 Philips Electronics Uk Ltd Microwave transmitter and communications system
US5742908A (en) * 1994-09-14 1998-04-21 Ericsson Inc. Frequency error correction in a satellite-mobile communications system
US5543697A (en) * 1994-10-27 1996-08-06 Sgs-Thomson Microelectronics, Inc. Circuit and method for controlling the speed of a motor
JP3244610B2 (ja) 1995-01-27 2002-01-07 株式会社日立製作所 周波数ホッピング方式無線ｌａｎシステム
JP3130752B2 (ja) 1995-02-24 2001-01-31 株式会社東芝 Ｏｆｄｍ伝送受信方式及び送受信装置
US5726978A (en) * 1995-06-22 1998-03-10 Telefonaktiebolaget L M Ericsson Publ. Adaptive channel allocation in a frequency division multiplexed system
ZA965340B (en) 1995-06-30 1997-01-27 Interdigital Tech Corp Code division multiple access (cdma) communication system
US5794119A (en) 1995-11-21 1998-08-11 Stanford Telecommunications, Inc. Subscriber frequency control system and method in point-to-multipoint RF communication system
US5970093A (en) * 1996-01-23 1999-10-19 Tiernan Communications, Inc. Fractionally-spaced adaptively-equalized self-recovering digital receiver for amplitude-Phase modulated signals
US5727037A (en) * 1996-01-26 1998-03-10 Silicon Graphics, Inc. System and method to reduce phase offset and phase jitter in phase-locked and delay-locked loops using self-biased circuits
JP3468964B2 (ja) * 1996-01-29 2003-11-25 富士通株式会社 Ｐｌｌ周波数シンセサイザ回路、比較分周器、及び、スワロウカウンタ
US5828705A (en) * 1996-02-01 1998-10-27 Kroeger; Brian W. Carrier tracking technique and apparatus having automatic flywheel/tracking/reacquisition control and extended signal to noise ratio
US5742527A (en) 1996-03-15 1998-04-21 Motorola, Inc. Flexible asymmetrical digital subscriber line (ADSL) receiver, central office using same, and method therefor
US5828660A (en) 1996-04-26 1998-10-27 Motorola, Inc. Multiple user communication system, device and method with overlapping uplink carrier spectra
US5802044A (en) 1996-04-26 1998-09-01 Motorola, Inc. Multicarrier reverse link timing synchronization system, device and method
DE19621228A1 (de) * 1996-05-25 1997-11-27 Itt Ind Gmbh Deutsche Digital einstellbarer Quarzoszillator mit monolithisch integrierter Oszillatorschaltung
JPH09321682A (ja) 1996-05-27 1997-12-12 Sony Corp 通信システム，通信方法及び端末装置
JP2985773B2 (ja) 1996-06-10 1999-12-06 日本電気株式会社 無線基地局間同期装置
US5732113A (en) * 1996-06-20 1998-03-24 Stanford University Timing and frequency synchronization of OFDM signals
JPH1065604A (ja) 1996-08-23 1998-03-06 Sony Corp 通信方法、基地局及び端末装置
KR100186753B1 (ko) * 1996-08-24 1999-05-15 삼성전자주식회사 직접 변복조 방식이 적용된 디지탈 무선 송수신 시스템
ATE227910T1 (de) 1996-09-02 2002-11-15 St Microelectronics Nv Verbesserungen bei, oder in bezug auf, mehrträgerübertragungssysteme
DE19635813A1 (de) 1996-09-04 1998-03-05 Johannes Prof Dr Ing Huber Verfahren zur Reduktion des Spitzenwertfaktors bei digitalen Übertragungsverfahren
CA2214163C (en) 1996-09-27 2001-07-31 Nec Corporation Method and apparatus for preamble-less demodulation
US5943606A (en) * 1996-09-30 1999-08-24 Qualcomm Incorporated Determination of frequency offsets in communication systems
US5930268A (en) 1996-12-20 1999-07-27 Motorola, Inc. Transceiver and associated method for surviving fades
US6212397B1 (en) * 1996-12-23 2001-04-03 Texas Instruments Incorporated Method and system for controlling remote multipoint stations
JPH10190612A (ja) 1996-12-26 1998-07-21 Sony Corp 通信方法及び受信装置
US5982809A (en) * 1997-01-23 1999-11-09 Cwill Telecommunications, Inc. Method and apparatus for carrier recovery and compensation in spread spectrum communications
US5926514A (en) * 1997-03-03 1999-07-20 Motorola, Inc. Apparatus for clock shifting in an integrated transceiver
US6072769A (en) 1997-03-04 2000-06-06 At&T Corporation Method for multitone division multiple access communications
US5838268A (en) * 1997-03-14 1998-11-17 Orckit Communications Ltd. Apparatus and methods for modulation and demodulation of data
US6169733B1 (en) * 1997-05-12 2001-01-02 Northern Telecom Limited Multiple mode capable radio receiver device
US6005893A (en) 1997-09-23 1999-12-21 Telefonaktiebolaget Lm Ericsson Reduced complexity bit allocation to subchannels in a multi-carrier, high speed data transmission system
US6575548B1 (en) * 1997-10-28 2003-06-10 Hewlett-Packard Company System and method for controlling energy characteristics of an inkjet printhead
US6205167B1 (en) 1997-12-23 2001-03-20 Philips Electronics North America Corporation Apparatus and method for code tracking in an IS-95 spread spectrum communications system
US6876675B1 (en) * 1998-02-06 2005-04-05 Cisco Technology, Inc. Synchronization in OFDM systems
GB9805860D0 (en) 1998-03-20 1998-05-13 Philips Electronics Nv Timing control of transmission time slot
SE9801092L (sv) 1998-03-30 1999-10-01 Telia Ab Arrangemang och metod vid ett mobilt radiokommunikationssystem
US6246713B1 (en) 1998-06-08 2001-06-12 Telefonaktiebolaget Lm Ericsson (Publ) Frequency-hopping in a bandwidth-on-demand system
US6028850A (en) * 1998-07-10 2000-02-22 Hyundai Electronics America, Inc. Wireless transceiver and frequency plan
US6865216B1 (en) * 1998-08-20 2005-03-08 Skyworks Solutions Inc. Frequency hopping spread spectrum modulation and direct sequence spread spectrum modulation cordless telephone
US6563862B1 (en) * 1998-10-21 2003-05-13 Thomson Licensing Sa Digital variable symbol rate modulation
EP1125401B1 (en) * 1998-10-30 2005-06-08 Broadcom Corporation Internet gigabit ethernet transmitter architecture
US6430235B1 (en) * 1998-11-05 2002-08-06 Wireless Facilities, Inc. Non-data-aided feedforward timing synchronization method
US6470005B1 (en) * 1998-12-29 2002-10-22 Thomson Licensing Sa Transceiver prerotation based on carrier offset
US8363757B1 (en) 1999-10-12 2013-01-29 Qualcomm Incorporated Method and apparatus for eliminating the effects of frequency offsets in a digital communication system
US6628673B1 (en) 1999-12-29 2003-09-30 Atheros Communications, Inc. Scalable communication system using overlaid signals and multi-carrier frequency communication
US6807146B1 (en) 2000-04-21 2004-10-19 Atheros Communications, Inc. Protocols for scalable communication system using overland signals and multi-carrier frequency communication
US7177374B2 (en) * 2005-06-17 2007-02-13 Broadcom Corporation Apparatus and method for sampling frequency offset estimation and correction in a wireless communication system
KR100719112B1 (ko) * 2005-07-19 2007-05-17 삼성전자주식회사 Ｏｆｄｍ 시스템에 적용되는 샘플링 주파수 오차 추정장치및 그 방법
US20070053462A1 (en) * 2005-09-06 2007-03-08 Pirooz Ali D Sampling frequency offset estimation and correction system and method for ultra wideband ofdm
US7646823B2 (en) * 2006-10-30 2010-01-12 Broadcom Corporation MIMO channel estimation in presence of sampling frequency offset

Also Published As

Publication number Publication date
CA2386885C (en) 2013-12-03
US20140192850A1 (en) 2014-07-10
TW533720B (en) 2003-05-21
JP4874485B2 (ja) 2012-02-15
CA2825703A1 (en) 2001-04-19
CA2825703C (en) 2016-02-02
US8363757B1 (en) 2013-01-29
US8767893B2 (en) 2014-07-01
EP1221234A2 (en) 2002-07-10
AU2613701A (en) 2001-04-23
JP2003511968A (ja) 2003-03-25
US20130121387A1 (en) 2013-05-16
WO2001028150A3 (en) 2001-09-27
WO2001028150A2 (en) 2001-04-19
CA2386885A1 (en) 2001-04-19

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