DE60229765D1 - Gleichzeitige schätzung von kanalimpulsantwort und gleichspannungsverschiebung - Google Patents
Gleichzeitige schätzung von kanalimpulsantwort und gleichspannungsverschiebungInfo
- Publication number
- DE60229765D1 DE60229765D1 DE60229765T DE60229765T DE60229765D1 DE 60229765 D1 DE60229765 D1 DE 60229765D1 DE 60229765 T DE60229765 T DE 60229765T DE 60229765 T DE60229765 T DE 60229765T DE 60229765 D1 DE60229765 D1 DE 60229765D1
- Authority
- DE
- Germany
- Prior art keywords
- received signal
- impulse response
- offset
- channel impulse
- voltage shift
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Lifetime
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0008—Modulated-carrier systems arrangements for allowing a transmitter or receiver to use more than one type of modulation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/0212—Channel estimation of impulse response
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/0224—Channel estimation using sounding signals
- H04L25/0228—Channel estimation using sounding signals with direct estimation from sounding signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/024—Channel estimation channel estimation algorithms
- H04L25/0242—Channel estimation channel estimation algorithms using matrix methods
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/06—Dc level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection
- H04L25/061—Dc level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection providing hard decisions only; arrangements for tracking or suppressing unwanted low frequency components, e.g. removal of dc offset
- H04L25/062—Setting decision thresholds using feedforward techniques only
-
- 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
- H04L27/20—Modulator circuits; Transmitter circuits
- H04L27/2003—Modulator circuits; Transmitter circuits for continuous phase modulation
- H04L27/2007—Modulator circuits; Transmitter circuits for continuous phase modulation in which the phase change within each symbol period is constrained
- H04L27/2017—Modulator circuits; Transmitter circuits for continuous phase modulation in which the phase change within each symbol period is constrained in which the phase changes are non-linear, e.g. generalized and Gaussian minimum shift keying, tamed frequency modulation
-
- 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
- H04L27/20—Modulator circuits; Transmitter circuits
- H04L27/2032—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner
- H04L27/2053—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases
- H04L27/206—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers
- H04L27/2067—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers with more than two phase states
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Nonlinear Science (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Dc Digital Transmission (AREA)
- Emergency Protection Circuit Devices (AREA)
- Measurement Of Resistance Or Impedance (AREA)
- Networks Using Active Elements (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB0123290.9A GB0123290D0 (en) | 2001-09-27 | 2001-09-27 | DC offset correction in a mobile communication system |
PCT/IB2002/004179 WO2003030476A2 (en) | 2001-09-27 | 2002-09-27 | Simultaneous estimation of channel impulse response and of dc offset |
Publications (1)
Publication Number | Publication Date |
---|---|
DE60229765D1 true DE60229765D1 (de) | 2008-12-18 |
Family
ID=9922828
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE60229765T Expired - Lifetime DE60229765D1 (de) | 2001-09-27 | 2002-09-27 | Gleichzeitige schätzung von kanalimpulsantwort und gleichspannungsverschiebung |
Country Status (8)
Country | Link |
---|---|
US (1) | US7317767B2 (de) |
EP (1) | EP1446926B1 (de) |
CN (1) | CN1623304A (de) |
AT (1) | ATE413756T1 (de) |
AU (1) | AU2002343124A1 (de) |
DE (1) | DE60229765D1 (de) |
GB (1) | GB0123290D0 (de) |
WO (1) | WO2003030476A2 (de) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1224781A1 (de) * | 1999-10-27 | 2002-07-24 | Nokia Corporation | Korrektur einer gleichspannungsverschiebung in einem mobilen vermittlungssystem |
US7035353B2 (en) * | 2001-10-24 | 2006-04-25 | Zenith Electronics Corporation | Channel estimation method blending correlation and least-squares based approaches |
EP1441457A4 (de) * | 2001-10-30 | 2010-10-20 | Sanyo Electric Co | Direktumsetzungsempfänger |
KR100984405B1 (ko) * | 2002-11-20 | 2010-09-29 | 텔레호낙티에볼라게트 엘엠 에릭슨(피유비엘) | 통신 채널을 통하여 수신된 통신 신호 내의 dc 오프셋을 결정하는 방법, 통신 채널을 통하여 수신된 통신 신호 내의 dc 오프셋을 보상하는 방법, 통신 채널을 통하여 수신된 통신 신호 내의 dc 오프셋을 결정하는 장치, 및 수신기 |
US7068735B2 (en) * | 2003-06-16 | 2006-06-27 | Broadcom Corp. | System and method to perform DC compensation on a radio frequency burst in a cellular wireless network |
GB0419487D0 (en) | 2004-09-02 | 2004-10-06 | Ttp Communications Ltd | DC estimation in received signals |
CN100505715C (zh) * | 2005-06-14 | 2009-06-24 | 北京邮电大学 | 一种通信系统中的训练序列传输方法 |
US20080232486A1 (en) * | 2007-03-19 | 2008-09-25 | Sharp Laboratories Of America, Inc. | Systems and methods for extending zadoff-chu sequences to a non-prime number length to minimize average correlation |
US8411765B2 (en) * | 2008-10-10 | 2013-04-02 | Ziva Corporation | Techniques and systems for wireless communications |
US8743976B2 (en) | 2009-09-03 | 2014-06-03 | Ziva Corporation | Techniques and systems for communications based on time reversal pre-coding |
US8565351B2 (en) * | 2011-04-28 | 2013-10-22 | Mediatek Singapore Pte. Ltd. | Channel impulse response (CIR)/DC offset (DCO) joint estimation block and method |
US11777763B2 (en) * | 2020-03-20 | 2023-10-03 | Nantworks, LLC | Selecting a signal phase in a communication system |
CN112737610B (zh) * | 2020-12-29 | 2023-07-07 | 芯翼信息科技(上海)有限公司 | 直流偏移的估计和校准方法及装置 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5684827A (en) * | 1995-10-04 | 1997-11-04 | Zenith Electronics Corporation | System for controlling the operating mode of an adaptive equalizer |
US5748677A (en) * | 1996-01-16 | 1998-05-05 | Kumar; Derek D. | Reference signal communication method and system |
DE19606102C2 (de) | 1996-02-19 | 1998-09-03 | Siemens Ag | Verfahren zum Ausgleich des Gleichspannungsstöranteils von Empfangssignalen und derartig ausgestaltete Empfangseinrichtung bzw. Funkstation |
FI101919B1 (fi) * | 1996-11-21 | 1998-09-15 | Nokia Telecommunications Oy | Menetelmä impulssivasteen laskemiseksi ja vastaanotin |
US6148047A (en) * | 1998-05-06 | 2000-11-14 | Philips Electronics North America Corporation | DC offset compensation for zero if quadrature demodulator |
US6504884B1 (en) * | 1999-05-12 | 2003-01-07 | Analog Devices, Inc. | Method for correcting DC offsets in a receiver |
US6463107B1 (en) * | 1999-07-01 | 2002-10-08 | Telefonaktiebolaget Lm Ericsson (Publ) | Methods and apparatuses for synchronization and modulation type detection |
MY133723A (en) * | 1999-09-17 | 2007-11-30 | Ericsson Telefon Ab L M | "apparatus and method for substantially eliminating a near-channel interfering amplitude modulated signal" |
EP1224781A1 (de) * | 1999-10-27 | 2002-07-24 | Nokia Corporation | Korrektur einer gleichspannungsverschiebung in einem mobilen vermittlungssystem |
-
2001
- 2001-09-27 GB GBGB0123290.9A patent/GB0123290D0/en not_active Ceased
-
2002
- 2002-09-27 CN CNA028189086A patent/CN1623304A/zh active Pending
- 2002-09-27 DE DE60229765T patent/DE60229765D1/de not_active Expired - Lifetime
- 2002-09-27 US US10/490,596 patent/US7317767B2/en not_active Expired - Fee Related
- 2002-09-27 EP EP02779787A patent/EP1446926B1/de not_active Expired - Lifetime
- 2002-09-27 AT AT02779787T patent/ATE413756T1/de not_active IP Right Cessation
- 2002-09-27 AU AU2002343124A patent/AU2002343124A1/en not_active Abandoned
- 2002-09-27 WO PCT/IB2002/004179 patent/WO2003030476A2/en not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
EP1446926B1 (de) | 2008-11-05 |
GB0123290D0 (en) | 2001-11-21 |
WO2003030476A2 (en) | 2003-04-10 |
AU2002343124A1 (en) | 2003-04-14 |
WO2003030476A3 (en) | 2004-06-10 |
US7317767B2 (en) | 2008-01-08 |
ATE413756T1 (de) | 2008-11-15 |
CN1623304A (zh) | 2005-06-01 |
EP1446926A2 (de) | 2004-08-18 |
US20040209573A1 (en) | 2004-10-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE60229765D1 (de) | Gleichzeitige schätzung von kanalimpulsantwort und gleichspannungsverschiebung | |
DE60014649D1 (de) | Entzerrer mit ausgleich von gleichspannungsverschiebungen | |
ATE298956T1 (de) | Kanalschätzer mit variabler anzahl von abgriffen | |
ATE539531T1 (de) | Verfahren und vorrichtung für einem mehrfachen modulationssender | |
NO990775D0 (no) | FremgangsmÕte for Õ overf°re binµre data, samt et datatransmisjonssystem | |
ATE475227T1 (de) | Ifdma-kommunikationssystem mit frequenzsprung | |
ATE305198T1 (de) | Verfahren zur amplituden- und phasen-schätzung in einem drahtlosen kommunikationssystem | |
DE60210090D1 (de) | Kanalschätzung in einem mehrträgersystem mit sendediversität | |
DE602004026754D1 (de) | Verfahren und Vorrichtung zur Signaldemodulation | |
DE69942818D1 (de) | Verfahren zur Übertragung von Fernschreibsignalen über drahtlose Telekommunikationssystemen | |
DE69807535T2 (de) | Verfahren zur verbesserten schätzung der kanalimpulsantwort in tdma-systemen | |
DE69615587D1 (de) | Verfahren zur momentabschätzung und ermittlung von merkmalen von spektren als entfernungs- oder zeitfunktion bestimmenden vorrichtungen | |
ATE304772T1 (de) | Verfahren und einrichtung zur schätzung eines frequenzversatzes durch kombinierung von pilot - und datensymbolen | |
DE60026605D1 (de) | Verfahren zur begrenzung von signalamplituden in einem modulationssystem | |
KR970072736A (ko) | 스팩트럼확산 통신방식 | |
WO2003030423A1 (fr) | Emetteur ofdm et procede d'emission par modulation ofdm | |
DE60220449D1 (de) | Verfahren und gerät zur dopplerspreizschätzung und dopplerverschiebungschätzung | |
DE60201443D1 (de) | Verfahren zur schätzung der übertragungsfunktion eines mehrträger-signalübertragungskanals und eines entsprechenden empfängers | |
AU2003246589A1 (en) | Method and system for concurrent estimation of frequency offset and modulation index | |
DE602004000346D1 (de) | Ultrabreitbandempfänger und entsprechendes Empfangsverfahren | |
DE50106033D1 (de) | Verfahren zur schätzung von kanalparametern von funkkanälen eines w-cdma-mobilfunksystems | |
DE602005016959D1 (de) | Vorrichtung und verfahren zur gewinnung von positionsinformationen | |
DE60029618D1 (de) | Verfahren und vorrichtung zur umwandlung einer kanalschätzung | |
AU2002318950A1 (en) | Technique for continuous ofdm demodulation | |
DE69801477T2 (de) | System und verfahren zur bestimmung der end-zu-end-eigenschaften eines kommunikationskanals |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition |