FI964491A0 - Menetelmä ja laite koherentin vastaanottimen siirtyneen taajuuden estimoimiseksi - Google Patents
Menetelmä ja laite koherentin vastaanottimen siirtyneen taajuuden estimoimiseksiInfo
- Publication number
- FI964491A0 FI964491A0 FI964491A FI964491A FI964491A0 FI 964491 A0 FI964491 A0 FI 964491A0 FI 964491 A FI964491 A FI 964491A FI 964491 A FI964491 A FI 964491A FI 964491 A0 FI964491 A0 FI 964491A0
- Authority
- FI
- Finland
- Prior art keywords
- estimating
- coherent receiver
- shifted frequency
- shifted
- frequency
- Prior art date
Links
- 230000001427 coherent effect Effects 0.000 title 1
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
- H04B1/7087—Carrier synchronisation aspects
-
- 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
- H04B1/709—Correlator structure
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
- H04L27/22—Demodulator circuits; Receiver circuits
- H04L27/233—Demodulator circuits; Receiver circuits using non-coherent demodulation
- H04L27/2332—Demodulator circuits; Receiver circuits using non-coherent demodulation using a non-coherent carrier
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0014—Carrier regulation
- H04L2027/0024—Carrier regulation at the receiver end
- H04L2027/0026—Correction of carrier offset
- H04L2027/003—Correction of carrier offset at baseband only
-
- 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
- H04L2027/0046—Open loops
-
- 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
-
- 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
- H04L2027/0071—Control of loops
- H04L2027/0079—Switching between loops
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US40226095 | 1995-03-10 | ||
US08/402,260 US5640431A (en) | 1995-03-10 | 1995-03-10 | Method and apparatus for offset frequency estimation for a coherent receiver |
PCT/US1996/000193 WO1996029791A2 (en) | 1995-03-10 | 1996-01-11 | Method and apparatus for offset frequency estimation for a coherent receiver |
US9600193 | 1996-01-11 |
Publications (3)
Publication Number | Publication Date |
---|---|
FI964491A FI964491A (fi) | 1996-11-08 |
FI964491A0 true FI964491A0 (fi) | 1996-11-08 |
FI114423B FI114423B (fi) | 2004-10-15 |
Family
ID=23591186
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI964491A FI114423B (fi) | 1995-03-10 | 1996-11-08 | Menetelmä ja laite koherentin vastaanottimen siirtyneen taajuuden estimoimiseksi |
Country Status (4)
Country | Link |
---|---|
US (1) | US5640431A (fi) |
CA (1) | CA2189343C (fi) |
FI (1) | FI114423B (fi) |
IL (1) | IL116781A (fi) |
Families Citing this family (71)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6111911A (en) * | 1995-06-07 | 2000-08-29 | Sanconix, Inc | Direct sequence frequency ambiguity resolving receiver |
US5764690A (en) * | 1996-06-04 | 1998-06-09 | Motorola, Inc. | Apparatus for despreading and demodulating a burst CDMA signal |
US6055231A (en) * | 1997-03-12 | 2000-04-25 | Interdigital Technology Corporation | Continuously adjusted-bandwidth discrete-time phase-locked loop |
US6178197B1 (en) * | 1997-06-23 | 2001-01-23 | Cellnet Data Systems, Inc. | Frequency discrimination in a spread spectrum signal processing system |
US5909471A (en) * | 1997-08-08 | 1999-06-01 | Arraycomm, Inc. | Method and system for rapid initial control signal detection in a wireless communications system |
ES2164313T3 (es) * | 1997-09-22 | 2002-02-16 | Cit Alcatel | Metodo y disposicion para determinar un error de temporizacion de reloj en un sistema de transmision de multiportadora. |
US6531982B1 (en) | 1997-09-30 | 2003-03-11 | Sirf Technology, Inc. | Field unit for use in a GPS system |
US6134286A (en) * | 1997-10-14 | 2000-10-17 | Ericsson Inc. | Synchronization techniques and systems for radiocommunication |
US6067315A (en) * | 1997-12-04 | 2000-05-23 | Telefonaktiebolaget Lm Ericsson | Method and apparatus for coherently-averaged power estimation |
US6327471B1 (en) | 1998-02-19 | 2001-12-04 | Conexant Systems, Inc. | Method and an apparatus for positioning system assisted cellular radiotelephone handoff and dropoff |
US6421399B1 (en) * | 1998-03-05 | 2002-07-16 | Agere Systems Guardian Corporation | Frequency and phase estimation for MPSK signals |
US6167351A (en) * | 1998-03-24 | 2000-12-26 | Tektronix, Inc. | Period determination of a periodic signal |
US6348744B1 (en) | 1998-04-14 | 2002-02-19 | Conexant Systems, Inc. | Integrated power management module |
US6266361B1 (en) * | 1998-07-21 | 2001-07-24 | Chung-Shan Institute Of Science And Technology | Method and architecture for correcting carrier frequency offset and spreading code timing offset in a direct sequence spread spectrum communication system |
EP1101315B1 (fr) * | 1998-07-24 | 2005-03-16 | THOMSON multimedia | Determination de la phase d'echantillonage |
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 |
US6044105A (en) * | 1998-09-01 | 2000-03-28 | Conexant Systems, Inc. | Doppler corrected spread spectrum matched filter |
US6389040B1 (en) * | 1998-09-11 | 2002-05-14 | Lucent Technologies Inc. | Apparatus and method for generating a frequency offset estimate for communication systems having frequency selecting fading channels |
US6693953B2 (en) | 1998-09-30 | 2004-02-17 | Skyworks Solutions, Inc. | Adaptive wireless communication receiver |
DE19854167C2 (de) * | 1998-11-24 | 2000-09-28 | Siemens Ag | Frequenzstabilisierte Sende-/Empfangsschaltung |
US6104747A (en) * | 1998-11-30 | 2000-08-15 | Motorola, Inc. | Method for determining optimum number of complex samples for coherent averaging in a communication system |
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 |
US6560270B1 (en) | 1999-03-04 | 2003-05-06 | Northrop Grumman Corporation | Method for tuning a spread spectrum receiver |
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 |
US6411661B1 (en) * | 1999-05-07 | 2002-06-25 | The Aerospace Corporation | Digital timing recovery loop for GMSK demodulators |
US6351486B1 (en) | 1999-05-25 | 2002-02-26 | Conexant Systems, Inc. | Accelerated selection of a base station in a wireless communication system |
US6463048B1 (en) | 1999-07-21 | 2002-10-08 | Lucent Technologies Inc. | Code generator for multiple rake finger and method of use |
US6922402B1 (en) * | 2000-01-25 | 2005-07-26 | Agilent Technologies, Inc. | Mutual frequency locking across a link |
US6603819B1 (en) * | 2000-02-25 | 2003-08-05 | Northrop Grumman Corporation | Radio symbol synchronization and doppler estimation techniques |
KR100361030B1 (ko) * | 2000-03-03 | 2002-11-18 | 한국과학기술원 | 주파수 선택적 페이딩 채널에서 psk 신호를 위한데이터 도움 반송파 주파수 오차 추정 방법 |
US6952440B1 (en) | 2000-04-18 | 2005-10-04 | Sirf Technology, Inc. | Signal detector employing a Doppler phase correction system |
US6931055B1 (en) | 2000-04-18 | 2005-08-16 | Sirf Technology, Inc. | Signal detector employing a doppler phase correction system |
US6714158B1 (en) * | 2000-04-18 | 2004-03-30 | Sirf Technology, Inc. | Method and system for data detection in a global positioning system satellite receiver |
US6788655B1 (en) | 2000-04-18 | 2004-09-07 | Sirf Technology, Inc. | Personal communications device with ratio counter |
US6683903B1 (en) | 2000-04-27 | 2004-01-27 | Motorola, Inc. | Method and apparatus for synchronization within a spread-spectrum communication system |
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 |
WO2002011309A1 (en) * | 2000-07-31 | 2002-02-07 | Morphics Technology, Inc. | Generic finger architecture for spread spectrum applications |
JP2002169001A (ja) * | 2000-09-22 | 2002-06-14 | Fuji Photo Film Co Ltd | 防眩性フィルムおよび液晶表示装置 |
US6748030B2 (en) * | 2000-12-07 | 2004-06-08 | Northrop Grumman Corporation | Differential phase demodulator incorporating 4th order coherent phase tracking |
US7187730B1 (en) * | 2001-03-21 | 2007-03-06 | Marvell International Ltd. | Method and apparatus for predicting CCK subsymbols |
US7206352B2 (en) * | 2001-04-02 | 2007-04-17 | Koninklijke Philips Electronics N.V. | ATSC digital television system |
US7035315B2 (en) * | 2001-04-24 | 2006-04-25 | Lucent Technologies Inc. | Doppler corrected communications receiver and method of removing doppler frequency shift |
US7039138B2 (en) * | 2001-06-05 | 2006-05-02 | Qualcomm Incorporated | Method and apparatus for bandwidth estimation |
US6577968B2 (en) | 2001-06-29 | 2003-06-10 | The United States Of America As Represented By The National Security Agency | Method of estimating signal frequency |
US7088955B2 (en) | 2001-07-16 | 2006-08-08 | Qualcomm Inc. | Method and apparatus for acquiring and tracking pilots in a CDMA communication system |
US7023928B2 (en) * | 2001-08-06 | 2006-04-04 | Lucent Technologies Inc. | Synchronization of a pilot assisted channel estimation orthogonal frequency division multiplexing system |
US7430191B2 (en) | 2001-09-10 | 2008-09-30 | Qualcomm Incorporated | Method and apparatus for performing frequency tracking based on diversity transmitted pilots in a CDMA communication system |
US7076001B2 (en) * | 2001-10-16 | 2006-07-11 | Harris Corporation | System and method for an in-service decision-directed signal to noise ratio estimator |
US7346135B1 (en) | 2002-02-13 | 2008-03-18 | Marvell International, Ltd. | Compensation for residual frequency offset, phase noise and sampling phase offset in wireless networks |
US6934524B2 (en) * | 2002-04-25 | 2005-08-23 | Agere Systems Inc. | Fine-stage automatic frequency compensation in post-detection short-range wireless applications |
JP3885657B2 (ja) * | 2002-05-10 | 2007-02-21 | Kddi株式会社 | Ofdm信号の周波数誤差を補正する受信装置 |
US7075948B2 (en) * | 2002-05-22 | 2006-07-11 | Stmicroelectronics, Inc. | Frequency offset estimator |
US20040137851A1 (en) * | 2002-10-29 | 2004-07-15 | Akhter Mohammad Shahanshah | Frequency offset controller |
US7271596B2 (en) * | 2002-11-19 | 2007-09-18 | University Of Utah Research Foundation | Method and system for testing a signal path having an operational signal |
WO2005027451A1 (en) * | 2003-09-12 | 2005-03-24 | Ems Technologies Canada, Ltd. | Joint synchronizer and decoder |
US7251300B2 (en) * | 2003-12-22 | 2007-07-31 | Spreadtrum Communications Corporation | Method and apparatus for frequency tracking based on recovered data |
US7702002B2 (en) | 2004-01-28 | 2010-04-20 | Qualcomm Incorporated | Rapid acquisition methods and apparatus for GPS signals |
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 |
US8311132B2 (en) * | 2005-11-30 | 2012-11-13 | Agere Systems Inc. | Pilot-assisted doppler frequency estimation |
EP1847837A1 (en) * | 2006-04-21 | 2007-10-24 | Fondazione Torino Wireless | Method and apparatus for frequency estimation |
US7720131B2 (en) * | 2007-02-02 | 2010-05-18 | Pc-Tel, Inc. | Iterative pilot-aided frequency offset estimation and C/I measurement for TDMA signal with offset larger than nyquist frequency of the reference symbol rate |
CN104104624B (zh) * | 2013-04-10 | 2018-02-16 | 富士通株式会社 | 频差估计方法、装置和*** |
US10158464B2 (en) * | 2015-09-25 | 2018-12-18 | Intel IP Corporation | Mobile terminal devices, mobile processing circuits, and methods of processing signals |
US10623986B2 (en) * | 2015-10-22 | 2020-04-14 | Photonic Systems, Inc. | RF signal separation and suppression system and method |
US10763885B2 (en) * | 2018-11-06 | 2020-09-01 | Stmicroelectronics S.R.L. | Method of error concealment, and associated device |
US11251766B2 (en) * | 2020-01-13 | 2022-02-15 | Maxim Integrated Products, Inc. | Ultra-wide band frequency offset estimation systems and methods for analog coherent receivers |
CN114285435B (zh) * | 2021-12-31 | 2024-01-19 | 网络通信与安全紫金山实验室 | 一种扩频通信频偏纠正方法、装置、设备和介质 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2653286A1 (fr) * | 1989-10-12 | 1991-04-19 | Europ Agence Spatiale | Procede et circuit d'acquisition de code pour recepteur de signal a spectre etale. |
US5109390A (en) * | 1989-11-07 | 1992-04-28 | Qualcomm Incorporated | Diversity receiver in a cdma cellular telephone system |
EP0486833B1 (de) * | 1990-11-22 | 1995-02-15 | Ascom Tech Ag | Empfänger für ein DSSS-Signal |
US5430759A (en) * | 1992-08-20 | 1995-07-04 | Nexus 1994 Limited | Low-power frequency-hopped spread spectrum reverse paging system |
US5289498A (en) * | 1992-09-09 | 1994-02-22 | Echelon Corporation | Adaptive data recovery for spread spectrum systems |
US5329547A (en) * | 1993-03-11 | 1994-07-12 | Motorola, Inc. | Method and apparatus for coherent communication in a spread-spectrum communication system |
-
1995
- 1995-03-10 US US08/402,260 patent/US5640431A/en not_active Expired - Lifetime
-
1996
- 1996-01-11 CA CA002189343A patent/CA2189343C/en not_active Expired - Lifetime
- 1996-01-16 IL IL11678196A patent/IL116781A/en not_active IP Right Cessation
- 1996-11-08 FI FI964491A patent/FI114423B/fi not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
CA2189343C (en) | 2001-01-02 |
FI964491A (fi) | 1996-11-08 |
IL116781A0 (en) | 1996-05-14 |
IL116781A (en) | 1999-01-26 |
FI114423B (fi) | 2004-10-15 |
US5640431A (en) | 1997-06-17 |
CA2189343A1 (en) | 1996-09-26 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
FI964491A0 (fi) | Menetelmä ja laite koherentin vastaanottimen siirtyneen taajuuden estimoimiseksi | |
EE200000295A (et) | Meetod ja seade sagedusnihke hindamiseks | |
FI952397A0 (fi) | Menetelmä yhteyden laadun arvioimiseksi ja vastaanotin | |
KR970703075A (ko) | 코히어런트 수신기에 대한 오프셋 주파수 추정을 위한 방법 및 장치(Method and apparatus for Offset Frequency Estimation for a Coherent Receiver) | |
FI964291A0 (fi) | Menetelmä ja laite taajuuden osoittamiseksi viestintäyksikölle | |
KR950702360A (ko) | 주파수 선택 방법 및 장치(Frequency Selection Method and Apparatus) | |
DE59408457D1 (de) | Frequenzanalyseverfahren | |
BR9606833A (pt) | Método e aparelho para a formação de dados para transmissão | |
DE69626154D1 (de) | Verfahren zur Interferenz-Überwachung | |
EP0920748A4 (en) | METHOD FOR COMPENSATING FOR DOPPLER FREQUENCY CHANGES | |
FI951918A0 (fi) | Lähetin-vastaanotinlaite ja menetelmä kompleksien I/Q-signaalin synnyttämiseksi ja käsittelemiseksi | |
FI981619A (fi) | Menetelmä ja laitteisto radiotaajuisen signaalin heijastushäviön mittaamiseksi | |
IL113511A0 (en) | System and method for calibration of frequency hopping | |
FI950843A0 (fi) | Menetelmä yhteyden laadun määrittämiseksi sekä vasMenetelmä yhteyden laadun määrittämiseksi sekä vastaanotin taanotin | |
EE200000781A (et) | Meetod, seade ja süsteem sagedussünkronisatsioonisignaali paiknemise määramiseks | |
KR0160573B1 (en) | Apparatus and method for frequency compensating an operational amplifier | |
GB2297213B (en) | Method and apparatus for estimating the detection range of a radar | |
EE200000236A (et) | Meetod ja aparatuur sageduse vaheldamise jadade genereerimiseks | |
FI943803A0 (fi) | Menetelmä ja laite radiokanavan impulssivasteen mittaamiseksi | |
EE9900209A (et) | Dielektrokineetilist efekti kasutav seade ja meetod objekti asukoha määramiseks | |
IT1286365B1 (it) | Apparecchio e procedimento per la sincronizzazione di un ricevitore | |
FI103635B1 (fi) | Tupakan paisutusmenetelmä ja -laite | |
FI102578B1 (fi) | Menetelmä taajuuseron mittaamiseksi ja vastaanotin | |
DE59407937D1 (de) | Verfahren zur Momentanfrequenz-Detektion | |
DE59309579D1 (de) | Verfahren zum Bestimmen von Grundfrequenzen im Frequenzspektrum einer akustischen Ortungsanlage |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
FG | Patent granted |
Ref document number: 114423 Country of ref document: FI |
|
PC | Transfer of assignment of patent |
Owner name: MOTOROLA MOBILITY, INC. Free format text: MOTOROLA MOBILITY, INC. |
|
MA | Patent expired |