ATE449467T1 - Ausnutzung des restfrequenzoffsets - Google Patents

Ausnutzung des restfrequenzoffsets

Info

Publication number
ATE449467T1
ATE449467T1 AT07765420T AT07765420T ATE449467T1 AT E449467 T1 ATE449467 T1 AT E449467T1 AT 07765420 T AT07765420 T AT 07765420T AT 07765420 T AT07765420 T AT 07765420T AT E449467 T1 ATE449467 T1 AT E449467T1
Authority
AT
Austria
Prior art keywords
residual frequency
frequency offset
adaptive
frequency offsets
afc
Prior art date
Application number
AT07765420T
Other languages
English (en)
Inventor
Karin Engdahl
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Application granted granted Critical
Publication of ATE449467T1 publication Critical patent/ATE449467T1/de

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
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7097—Interference-related aspects
    • H04B1/711—Interference-related aspects the interference being multi-path interference
    • H04B1/7115—Constructive combining of multi-path signals, i.e. RAKE receivers
    • H04B1/7117—Selection, re-selection, allocation or re-allocation of paths to fingers, e.g. timing offset control of allocated fingers
    • 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
    • H04B1/7087—Carrier synchronisation aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2201/00—Indexing scheme relating to details of transmission systems not covered by a single group of H04B3/00 - H04B13/00
    • H04B2201/69—Orthogonal indexing scheme relating to spread spectrum techniques in general
    • H04B2201/707—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation
    • H04B2201/7097—Direct sequence modulation interference
    • H04B2201/709727—GRAKE type RAKE receivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0044—Control loops for carrier regulation
    • H04L2027/0053—Closed loops
    • H04L2027/0055—Closed loops single phase
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0044—Control loops for carrier regulation
    • H04L2027/0063—Elements of loops
    • H04L2027/0065—Frequency error detectors

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Circuits Of Receivers In General (AREA)
  • Emergency Alarm Devices (AREA)
  • Rear-View Mirror Devices That Are Mounted On The Exterior Of The Vehicle (AREA)
  • Transmitters (AREA)
  • Mobile Radio Communication Systems (AREA)
AT07765420T 2006-07-12 2007-06-14 Ausnutzung des restfrequenzoffsets ATE449467T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/457,029 US8184675B2 (en) 2006-07-12 2006-07-12 Residual frequency offset exploitation
PCT/EP2007/055899 WO2008006662A1 (en) 2006-07-12 2007-06-14 Residual frequency offset exploitation

Publications (1)

Publication Number Publication Date
ATE449467T1 true ATE449467T1 (de) 2009-12-15

Family

ID=37671085

Family Applications (1)

Application Number Title Priority Date Filing Date
AT07765420T ATE449467T1 (de) 2006-07-12 2007-06-14 Ausnutzung des restfrequenzoffsets

Country Status (5)

Country Link
US (1) US8184675B2 (de)
EP (1) EP2039017B1 (de)
AT (1) ATE449467T1 (de)
DE (1) DE602007003367D1 (de)
WO (1) WO2008006662A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106254285A (zh) * 2016-09-30 2016-12-21 金陵科技学院 自组网宽带无线通信基带处理方法

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US7873125B2 (en) * 2006-11-30 2011-01-18 Broadcom Corporation Method and system for sliding window phase estimator for WCDMA automatic frequency correction
US7809043B2 (en) * 2006-11-30 2010-10-05 Broadcom Corporation Method and system for a flexible automatic frequency control (AFC) design supporting transmit diversity
ATE519309T1 (de) 2008-11-03 2011-08-15 Ericsson Telefon Ab L M Schätzung einer frequenzumsetzung
EP2371099B1 (de) * 2008-12-23 2013-05-29 Telefonaktiebolaget L M Ericsson (publ) Verfahren und Vorrichtung zur Empfängerfrequenzfehlerkompensation
WO2010122444A1 (en) * 2009-04-23 2010-10-28 Koninklijke Philips Electronics N.V. Frequency offset and channel gain tracking for enhanced transmission efficiency
US8447005B2 (en) 2009-11-05 2013-05-21 Telefonaktiebolaget L M Ericsson (Publ) Frequency synchronization methods and apparatus
EP2663044B1 (de) * 2012-02-13 2016-04-27 Huawei Technologies Co., Ltd. Verfahren, vorrichtung und system zur messung eines kanalfrequenzversatzes
TWI462539B (zh) * 2012-03-06 2014-11-21 Mstar Semiconductor Inc 頻率校正方法
CN102694570B (zh) * 2012-05-22 2014-05-28 杭州电子科技大学 一种大频偏条件下扩频通信系统自动频率控制方法
US10554355B2 (en) 2016-09-30 2020-02-04 Apple Inc. Station (STA) and method for usage of phase noise compensation based on operational parameters
WO2019158182A1 (en) * 2018-02-13 2019-08-22 Abb Schweiz Ag Frequency estimation in a wireless communication network for power grid control
CN112929311B (zh) * 2021-01-26 2023-01-03 白盒子(上海)微电子科技有限公司 一种控制信道多用户复用时高精度频偏估计方法

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US5878093A (en) * 1996-12-16 1999-03-02 Ericsson Inc. Interference rejection combining with frequency correction
US6522696B1 (en) * 1997-04-11 2003-02-18 Agere Systems Inc. Adaptive frequency correction in a wireless communications system, such as for GSM and IS54
US6560273B1 (en) 1998-10-07 2003-05-06 Ericsson Inc. Delay searcher and delay trackers interaction for new delays assignment to rake fingers
US6278725B1 (en) 1998-12-18 2001-08-21 Philips Electronics North America Corporation Automatic frequency control loop multipath combiner for a rake receiver
US6922434B2 (en) * 1999-10-19 2005-07-26 Ericsson Inc. Apparatus and methods for finger delay selection in RAKE receivers
US6608858B1 (en) 2000-01-26 2003-08-19 Qualcomm Incorporated Multipath doppler adjusted frequency tracking loop
JP3497480B2 (ja) 2000-09-04 2004-02-16 松下電器産業株式会社 位相回転検出装置及びそれを備えた無線基地局装置
US7443826B1 (en) 2000-10-04 2008-10-28 Telefonaktiebolaget L M Ericsson (Publ) Method and apparatus for automatic frequency control in a CDMA receiver
FR2816776B1 (fr) * 2000-11-10 2003-02-07 Cit Alcatel Procede de correction de l'erreur de frequence
US20040066737A1 (en) 2001-05-30 2004-04-08 Takuya Sakaishi Automatic frequency control device and automatic frequency control method
US7088955B2 (en) 2001-07-16 2006-08-08 Qualcomm Inc. Method and apparatus for acquiring and tracking pilots in a CDMA communication system
US6741665B2 (en) * 2002-06-20 2004-05-25 Nokia Corporation Method and apparatus providing an amplitude independent automatic frequency control circuit
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EP1383239A1 (de) 2002-07-17 2004-01-21 STMicroelectronics N.V. Verfahren und Einrichtung zur automatischen Frequenzregelung in einem DS-CDMA-Empfänger
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DE10251313B4 (de) * 2002-11-04 2007-05-03 Advanced Micro Devices, Inc., Sunnyvale Gemeinsame Benutzung eines Schaltkreises für Frequenz- und Phasenfehlerkorrektur
US6980775B2 (en) * 2002-12-30 2005-12-27 Motorola, Inc. Automatic frequency control (AFC) system and method using an adaptive threshold to improve accuracy of the direct current (DC) component calculation for a received signal
CN1647430A (zh) 2003-02-25 2005-07-27 连宇通信有限公司 一种载波频率估计方法及装置
KR100630043B1 (ko) 2003-11-06 2006-09-27 삼성전자주식회사 이동통신시스템의 수신단에서의 주파수 오차 추정 및 결합기
US7433433B2 (en) 2003-11-13 2008-10-07 Telefonaktiebolaget L M Ericsson (Publ) Channel estimation by adaptive interpolation
JP4190406B2 (ja) 2003-12-25 2008-12-03 三洋電機株式会社 周波数オフセット推定方法およびそれを利用した周波数オフセット補正装置
US8107512B2 (en) 2004-03-08 2012-01-31 Thomson Licensing Method and apparatus for robust automatic frequency control in CDMA systems with constant pilot signals
US7555074B2 (en) * 2005-02-01 2009-06-30 Telefonaktiebolaget L M Ericsson (Publ) Interference estimation in the presence of frequency errors
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106254285A (zh) * 2016-09-30 2016-12-21 金陵科技学院 自组网宽带无线通信基带处理方法

Also Published As

Publication number Publication date
WO2008006662A1 (en) 2008-01-17
DE602007003367D1 (de) 2009-12-31
US20080013650A1 (en) 2008-01-17
EP2039017B1 (de) 2009-11-18
US8184675B2 (en) 2012-05-22
EP2039017A1 (de) 2009-03-25

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