BRPI0419205A - método e aparelho para recuperação de portadora utilizando múltiplas fontes - Google Patents
método e aparelho para recuperação de portadora utilizando múltiplas fontesInfo
- Publication number
- BRPI0419205A BRPI0419205A BRPI0419205-2A BRPI0419205A BRPI0419205A BR PI0419205 A BRPI0419205 A BR PI0419205A BR PI0419205 A BRPI0419205 A BR PI0419205A BR PI0419205 A BRPI0419205 A BR PI0419205A
- Authority
- BR
- Brazil
- Prior art keywords
- phase
- multiple sources
- phase estimator
- carrier recovery
- estimator
- Prior art date
Links
Classifications
-
- 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
- H04L27/227—Demodulator circuits; Receiver circuits using coherent demodulation
-
- 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
- H04L2027/0083—Signalling arrangements
- H04L2027/0087—Out-of-band signals, (e.g. pilots)
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Abstract
MéTODO E APARELHO PARA RECUPERAçãO DE PORTADORA UTILIZANDO MúLTIPLAS FONTES. Um receptor compreende um estimador de fase de múltiplas fontes. Esse último compreende um estimador de fase piloto, um estimador de fase de média baseado em dados, um seletor e um controlador de interpolação comum. O seletor seleciona, ou estimador de fase piloto, ou o estimador de fase de média baseada em dados como a fonte de estimativas de fase determinada em tempos específicos. Em outros tempos, o controlador de interpolação comum provê estimativas de fase interpoladas como uma função de uma interpolação linear baseada em uma estimativa de fase determinada, respectiva.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/US2004/038654 WO2006054993A1 (en) | 2004-11-16 | 2004-11-16 | Method and apparatus for carrier recovery using multiple sources |
Publications (1)
Publication Number | Publication Date |
---|---|
BRPI0419205A true BRPI0419205A (pt) | 2007-12-18 |
Family
ID=34959620
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BRPI0419205-2A BRPI0419205A (pt) | 2004-11-16 | 2004-11-16 | método e aparelho para recuperação de portadora utilizando múltiplas fontes |
Country Status (6)
Country | Link |
---|---|
US (1) | US20080292029A1 (pt) |
EP (1) | EP1813071A1 (pt) |
JP (1) | JP4714746B2 (pt) |
CN (1) | CN101057470B (pt) |
BR (1) | BRPI0419205A (pt) |
WO (1) | WO2006054993A1 (pt) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BRPI0419199B1 (pt) * | 2004-11-16 | 2018-06-05 | Thomson Licensing | Método e aparelho para recuperação de portadora utilizando interpolação de fase com assistência |
US8204156B2 (en) * | 2008-12-31 | 2012-06-19 | Intel Corporation | Phase error detection with conditional probabilities |
JP5730861B2 (ja) | 2009-05-29 | 2015-06-10 | トムソン ライセンシングThomson Licensing | 位相回復方法及び位相回復装置 |
CN102511126B (zh) * | 2011-04-21 | 2014-09-17 | 华为技术有限公司 | 相差补偿装置与相差补偿方法 |
US9513609B2 (en) * | 2013-02-01 | 2016-12-06 | Nxp B.V. | Wireless communications using active modulation |
CN107295366B (zh) * | 2016-04-05 | 2020-03-31 | 中国科学院上海高等研究院 | 一种广播多管道业务数据调度复用方法与系统 |
US9819456B1 (en) | 2016-10-17 | 2017-11-14 | Seagate Technology Llc | Preamble detection and frequency offset determination |
US10164760B1 (en) | 2016-10-18 | 2018-12-25 | Seagate Technology Llc | Timing excursion recovery |
US10152457B1 (en) | 2016-10-25 | 2018-12-11 | Seagate Technology Llc | Target parameter adaptation |
US10277718B1 (en) | 2016-11-22 | 2019-04-30 | Seagate Technology Llc | Preamble defect detection and mitigation |
US10084553B1 (en) | 2016-12-22 | 2018-09-25 | Seagate Technology Llc | Iterative recovery from baseline or timing disturbances |
US9979573B1 (en) | 2016-12-23 | 2018-05-22 | Seagate Technology Llc | Position error signal burst demodulation |
US9998136B1 (en) | 2017-02-17 | 2018-06-12 | Seagate Technology Llc | Loop consistency using multiple channel estimates |
US10382166B1 (en) | 2017-02-22 | 2019-08-13 | Seagate Technology Llc | Constrained receiver parameter optimization |
US9928854B1 (en) | 2017-05-03 | 2018-03-27 | Seagate Technology Llc | MISO equalization with ADC averaging |
Family Cites Families (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2855170B2 (ja) * | 1994-06-23 | 1999-02-10 | エヌ・ティ・ティ移動通信網株式会社 | Cdma復調回路および復調方法 |
CN1065093C (zh) * | 1994-06-23 | 2001-04-25 | Ntt移动通信网株式会社 | Cdma解调器及解调方法 |
JP3013763B2 (ja) * | 1995-08-25 | 2000-02-28 | 日本電気株式会社 | キャリア同期ユニット |
JP3446801B2 (ja) * | 1997-02-13 | 2003-09-16 | 日本電信電話株式会社 | バースト信号復調回路 |
US5940450A (en) * | 1997-02-28 | 1999-08-17 | Hitachi America, Ltd. | Carrier recovery method and apparatus |
US6072841A (en) * | 1997-07-01 | 2000-06-06 | Hughes Electronics Corporation | Block phase estimator for the coherent detection of non-differentially phase modulated data bursts on rician fading channels |
JP3659800B2 (ja) * | 1998-04-15 | 2005-06-15 | 三菱電機株式会社 | 位相誤差検出装置 |
JP2982797B1 (ja) * | 1998-08-03 | 1999-11-29 | 日本電気株式会社 | Cdma受信装置における復調回路 |
JP2000244598A (ja) * | 1999-02-19 | 2000-09-08 | Matsushita Electric Ind Co Ltd | 制御装置、周波数オフセット補償装置、及びそれを用いた復調装置 |
JP3368875B2 (ja) * | 1999-11-05 | 2003-01-20 | 日本電気株式会社 | 周波数オフセット補正システム及び方法 |
US6963602B1 (en) * | 2000-01-05 | 2005-11-08 | Advanced Micro Devices, Inc. | Digital correction method and system |
EP1162803A1 (en) * | 2000-06-05 | 2001-12-12 | Telefonaktiebolaget L M Ericsson (Publ) | Frequency tracking device and method for a receiver of a multi-carrier communication system |
KR100379395B1 (ko) * | 2000-08-23 | 2003-04-10 | 엘지전자 주식회사 | 반송파 복구 장치 및 방법 |
US7012977B2 (en) * | 2000-12-29 | 2006-03-14 | Telefonaktiebolaget Lm Ericsson (Publ) | System, method and apparatus for wireless channel parameter estimation in spread spectrum communication systems |
US7085239B2 (en) * | 2001-01-05 | 2006-08-01 | Qualcomm, Incorporated | Method and apparatus for determining the forward link closed loop power control set point in a wireless packet data communication system |
US7079574B2 (en) * | 2001-01-17 | 2006-07-18 | Radiant Networks Plc | Carrier phase recovery system for adaptive burst modems and link hopping radio networks |
KR100402906B1 (ko) * | 2001-02-08 | 2003-10-22 | (주)아이앤씨테크놀로지 | 직교주파수분할다중방식에서의 주파수 오프셋 동기화 장치및 방법 |
US6633616B2 (en) * | 2001-02-21 | 2003-10-14 | Magis Networks, Inc. | OFDM pilot tone tracking for wireless LAN |
US6628707B2 (en) * | 2001-05-04 | 2003-09-30 | Radiant Networks Plc | Adaptive equalizer system for short burst modems and link hopping radio networks |
CN1166101C (zh) * | 2001-10-26 | 2004-09-08 | 宁波大学 | 一种实现cdma基带系统相干解调的方法 |
US20030128777A1 (en) * | 2001-12-04 | 2003-07-10 | Linsky Stuart T. | Decision directed phase locked loops (DD-PLL) with multiple initial phase and/or frequency estimates in digital communication systems |
US20030128660A1 (en) * | 2002-01-09 | 2003-07-10 | Atsushi Ito | OFDM communications apparatus, OFDM communications method, and OFDM communications program |
US7139340B2 (en) * | 2002-06-28 | 2006-11-21 | Hitachi, Ltd. | Robust OFDM carrier recovery methods and apparatus |
US6999778B2 (en) * | 2002-07-03 | 2006-02-14 | Denso Corporation | Multipath assistance for pilot phase measurement processes |
DE10251313B4 (de) * | 2002-11-04 | 2007-05-03 | Advanced Micro Devices, Inc., Sunnyvale | Gemeinsame Benutzung eines Schaltkreises für Frequenz- und Phasenfehlerkorrektur |
ATE350847T1 (de) * | 2003-09-05 | 2007-01-15 | Europ Agence Spatiale | Verfahren zur pilotgestützen trägerphasensynchronization |
US7321550B2 (en) * | 2004-02-17 | 2008-01-22 | Industrial Technology Research Institute | Method of equalization in an OFDM system |
-
2004
- 2004-11-16 BR BRPI0419205-2A patent/BRPI0419205A/pt not_active IP Right Cessation
- 2004-11-16 EP EP04811381A patent/EP1813071A1/en not_active Withdrawn
- 2004-11-16 US US11/667,791 patent/US20080292029A1/en not_active Abandoned
- 2004-11-16 JP JP2007541168A patent/JP4714746B2/ja not_active Expired - Fee Related
- 2004-11-16 CN CN2004800444172A patent/CN101057470B/zh not_active Expired - Fee Related
- 2004-11-16 WO PCT/US2004/038654 patent/WO2006054993A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
WO2006054993A1 (en) | 2006-05-26 |
CN101057470A (zh) | 2007-10-17 |
JP4714746B2 (ja) | 2011-06-29 |
EP1813071A1 (en) | 2007-08-01 |
CN101057470B (zh) | 2010-04-14 |
US20080292029A1 (en) | 2008-11-27 |
JP2008521281A (ja) | 2008-06-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
B08F | Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette] | ||
B08K | Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette] |