DE69006586D1 - Verfahren zur Schätzung eines Kanals, der von einem "Fading" unterzogen wird, bei Übertragung von Symbolsequenzen. - Google Patents
Verfahren zur Schätzung eines Kanals, der von einem "Fading" unterzogen wird, bei Übertragung von Symbolsequenzen.Info
- Publication number
- DE69006586D1 DE69006586D1 DE90850383T DE69006586T DE69006586D1 DE 69006586 D1 DE69006586 D1 DE 69006586D1 DE 90850383 T DE90850383 T DE 90850383T DE 69006586 T DE69006586 T DE 69006586T DE 69006586 D1 DE69006586 D1 DE 69006586D1
- Authority
- DE
- Germany
- Prior art keywords
- fading
- estimating
- subject
- channel
- symbol sequences
- 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 - Fee Related
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/01—Equalisers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/005—Control of transmission; Equalising
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/318—Received signal strength
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Quality & Reliability (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
- Noise Elimination (AREA)
- Filters That Use Time-Delay Elements (AREA)
- Mobile Radio Communication Systems (AREA)
- Error Detection And Correction (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8904327A SE465245B (sv) | 1989-12-22 | 1989-12-22 | Foerfarande att utfoera kanalestimering foer en faedande kanal vid oeverfoering av symbolsekvenser |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69006586D1 true DE69006586D1 (de) | 1994-03-24 |
DE69006586T2 DE69006586T2 (de) | 1994-05-26 |
Family
ID=20377842
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69006586T Expired - Fee Related DE69006586T2 (de) | 1989-12-22 | 1990-11-22 | Verfahren zur Schätzung eines Kanals, der von einem "Fading" unterzogen wird, bei Übertragung von Symbolsequenzen. |
Country Status (12)
Country | Link |
---|---|
US (1) | US5204878A (de) |
EP (1) | EP0434651B1 (de) |
JP (1) | JP3165437B2 (de) |
KR (1) | KR970007616B1 (de) |
AU (1) | AU630537B2 (de) |
CA (1) | CA2046316C (de) |
DE (1) | DE69006586T2 (de) |
HK (1) | HK85494A (de) |
MY (1) | MY107752A (de) |
NZ (1) | NZ236235A (de) |
SE (1) | SE465245B (de) |
WO (1) | WO1991010296A1 (de) |
Families Citing this family (37)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1236977B (it) * | 1989-12-22 | 1993-05-12 | Italtel Spa | Ricevitore per un sistema radiomobile digitale con cancellazione di segnali interferenti isofrequenziali aventi lo stesso tipo di modulazione,e relativo metodo |
US5263026A (en) * | 1991-06-27 | 1993-11-16 | Hughes Aircraft Company | Maximum likelihood sequence estimation based equalization within a mobile digital cellular receiver |
US5214675A (en) * | 1991-07-02 | 1993-05-25 | Motorola, Inc. | System and method for calculating channel gain and noise variance of a communication channel |
SE469052B (sv) * | 1991-09-10 | 1993-05-03 | Ericsson Telefon Ab L M | Foerfarande att bilda ett kanalestimat foer en tidsvarierande radiokanal |
DE4139567A1 (de) * | 1991-11-30 | 1993-06-03 | Aeg Mobile Communication | Digitales funk-nachrichtenuebertragungsverfahren |
SE470371B (sv) * | 1992-06-23 | 1994-01-31 | Ericsson Telefon Ab L M | Sätt och anordning vid digital signalöverföring att hos en mottagare estimera överförda symboler |
US5335250A (en) * | 1992-10-22 | 1994-08-02 | Ericsson Ge Mobile Communications Inc. | Method and apparatus for bidirectional demodulation of digitally modulated signals |
JPH06140951A (ja) * | 1992-10-27 | 1994-05-20 | Sony Corp | ビタビ等化器 |
US5581580A (en) * | 1993-05-20 | 1996-12-03 | Telefonaktiebolaget Lm Ericsson | Low complexity model based channel estimation algorithm for fading channels |
SE513657C2 (sv) * | 1993-06-24 | 2000-10-16 | Ericsson Telefon Ab L M | Sätt och anordning att vid digital signalöverföring estimera överförda symboler hos en mottagare |
JP3560991B2 (ja) * | 1993-09-20 | 2004-09-02 | 株式会社東芝 | 適応型最尤系列推定装置 |
KR0124597B1 (ko) * | 1994-04-12 | 1997-12-01 | 구자홍 | 에이치디티브이(hdtv)용 채널등화기 |
SE502755C2 (sv) * | 1994-09-27 | 1996-01-08 | Telia Ab | Metod och anordning avseende fädningsrelaterad accesskontroll vid digitalt radiokommunikationssystem |
SE503522C2 (sv) * | 1994-10-31 | 1996-07-01 | Ericsson Telefon Ab L M | Förfarande och anordning för kanalestimering |
US5586128A (en) * | 1994-11-17 | 1996-12-17 | Ericsson Ge Mobile Communications Inc. | System for decoding digital data using a variable decision depth |
US5568520A (en) * | 1995-03-09 | 1996-10-22 | Ericsson Inc. | Slope drift and offset compensation in zero-IF receivers |
US5712877A (en) * | 1995-05-26 | 1998-01-27 | Simon Fraser University | Pilot-symbol aided continuous phase modulation system |
CA2227471C (en) * | 1995-08-23 | 2002-06-25 | Northern Telecom Limited | Timing recovery and frame synchronization in a cellular communications system |
FI100564B (fi) * | 1995-12-04 | 1997-12-31 | Nokia Telecommunications Oy | Menetelmä transitiometriikan muodostamiseksi ja solukkoradiojärjestelm än vastaanotin |
US5838739A (en) * | 1996-03-29 | 1998-11-17 | Ericsson Inc. | Channel estimator circuitry, and associated method, for a digital communication system |
FI962140A (fi) | 1996-05-21 | 1997-11-22 | Nokia Telecommunications Oy | Menetelmä impulssivasteen estimoimiseksi sekä vastaanotin |
US6006075A (en) * | 1996-06-18 | 1999-12-21 | Telefonaktiebolaget L M Ericsson (Publ) | Method and apparatus for transmitting communication signals using transmission space diversity and frequency diversity |
US6026130A (en) * | 1997-03-04 | 2000-02-15 | Advanced Micro Devices, Inc. | System and method for estimating a set of parameters for a transmission channel in a communication system |
US6151484A (en) * | 1997-08-08 | 2000-11-21 | Ericsson Inc. | Communications apparatus and methods for adaptive signal processing based on mobility characteristics |
FI106681B (fi) * | 1997-08-29 | 2001-03-15 | Nokia Networks Oy | Parametrin estimointimenetelmä ja vastaanotin |
US6208617B1 (en) * | 1998-02-27 | 2001-03-27 | Lucent Technologies, Inc. | Channel tracking in a mobile receiver |
US6404826B1 (en) * | 1998-07-02 | 2002-06-11 | Texas Instruments Incorporated | Iterative signal-to-interference ratio estimation for WCDMA |
US7391350B2 (en) * | 2000-07-13 | 2008-06-24 | The Regents Of The University Of California | Adaptive multi-bit delta and sigma-delta modulation |
US7415285B2 (en) | 2001-09-27 | 2008-08-19 | The Regents Of The University Of California | Reducing power control errors in wireless communication system |
DE60032906T2 (de) * | 2000-11-07 | 2007-10-25 | Stmicroelectronics N.V. | Verfahren und Vorrichtung zur Kanalschätzung, insbesondere für ein Mobiltelefon |
EP1296460B1 (de) * | 2001-09-25 | 2006-04-19 | STMicroelectronics N.V. | Verfahren und Vorrichtung zur Bestimmung der Signalschwundkoeffizienten in einem Mehrwegübertragungskanal, der insbesondere eine Basisstation und ein Mobiltelefon verbindet |
DE10232702B4 (de) * | 2002-07-18 | 2005-06-16 | Infineon Technologies Ag | Adaptiver Entzerrer mit integrierter Anpassung des Ausgangspegels |
US7218693B2 (en) * | 2003-05-08 | 2007-05-15 | Texas Instruments Incorporated | Method and apparatus for channel estimation in a packet based transmission system having reduced complexity |
US7889822B2 (en) * | 2006-09-21 | 2011-02-15 | Broadcom Corporation | Frequency domain equalizer with one dominant interference cancellation for dual antenna radio |
US8265133B2 (en) * | 2009-09-30 | 2012-09-11 | Silicon Laboratories Inc. | Radio receiver having a multipath equalizer |
US8130882B2 (en) * | 2009-09-30 | 2012-03-06 | Silicon Laboratories Inc. | Radio receiver having a multipath equalizer |
US20120281145A1 (en) * | 2011-05-06 | 2012-11-08 | Casas Raul Alejandro | Least squares matrix compression and decompression in a digital television receiver |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3116266A1 (de) * | 1981-04-24 | 1982-11-11 | TE KA DE Felten & Guilleaume Fernmeldeanlagen GmbH, 8500 Nürnberg | Verfahren zum entzerren eines datensignales |
US4475211A (en) * | 1982-09-13 | 1984-10-02 | Communications Satellite Corporation | Digitally controlled transversal equalizer |
US4564952A (en) * | 1983-12-08 | 1986-01-14 | At&T Bell Laboratories | Compensation of filter symbol interference by adaptive estimation of received symbol sequences |
US4935183A (en) * | 1984-04-23 | 1990-06-19 | Wenger Manufacturing, Inc. | Method of extruding material through a twin-screw extruder having respective conical nose screw sections |
JPS6211326A (ja) * | 1985-07-09 | 1987-01-20 | Hitachi Ltd | 自動等化器再設定方式 |
US4635276A (en) * | 1985-07-25 | 1987-01-06 | At&T Bell Laboratories | Asynchronous and non-data decision directed equalizer adjustment |
US4811360A (en) * | 1988-01-14 | 1989-03-07 | General Datacomm, Inc. | Apparatus and method for adaptively optimizing equalization delay of data communication equipment |
SE462943B (sv) * | 1989-01-26 | 1990-09-17 | Ericsson Telefon Ab L M | Saett och anordning foer frekvensstyrning av en koherent radiomottagare |
SE462942B (sv) * | 1989-01-26 | 1990-09-17 | Ericsson Telefon Ab L M | Saett och anordning foer snabb frekvensstyrning av en koherent radiomottagare |
US5031193A (en) * | 1989-11-13 | 1991-07-09 | Motorola, Inc. | Method and apparatus for diversity reception of time-dispersed signals |
-
1989
- 1989-12-22 SE SE8904327A patent/SE465245B/sv not_active IP Right Cessation
-
1990
- 1990-11-22 DE DE69006586T patent/DE69006586T2/de not_active Expired - Fee Related
- 1990-11-22 EP EP90850383A patent/EP0434651B1/de not_active Expired - Lifetime
- 1990-11-22 JP JP50189291A patent/JP3165437B2/ja not_active Expired - Fee Related
- 1990-11-22 AU AU69728/91A patent/AU630537B2/en not_active Ceased
- 1990-11-22 WO PCT/SE1990/000764 patent/WO1991010296A1/en active Application Filing
- 1990-11-22 CA CA002046316A patent/CA2046316C/en not_active Expired - Fee Related
- 1990-11-27 NZ NZ236235A patent/NZ236235A/xx unknown
- 1990-12-01 MY MYPI90002120A patent/MY107752A/en unknown
- 1990-12-03 US US07/620,710 patent/US5204878A/en not_active Expired - Lifetime
-
1991
- 1991-08-10 KR KR91700873A patent/KR970007616B1/ko not_active IP Right Cessation
-
1994
- 1994-08-18 HK HK85494A patent/HK85494A/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
JP3165437B2 (ja) | 2001-05-14 |
SE8904327L (sv) | 1991-06-23 |
SE465245B (sv) | 1991-08-12 |
KR970007616B1 (en) | 1997-05-13 |
SE8904327D0 (sv) | 1989-12-22 |
EP0434651B1 (de) | 1994-02-09 |
US5204878A (en) | 1993-04-20 |
MY107752A (en) | 1996-06-15 |
AU630537B2 (en) | 1992-10-29 |
HK85494A (en) | 1994-08-26 |
CA2046316C (en) | 2000-05-23 |
EP0434651A1 (de) | 1991-06-26 |
AU6972891A (en) | 1991-07-24 |
KR920702106A (ko) | 1992-08-12 |
CA2046316A1 (en) | 1991-06-23 |
DE69006586T2 (de) | 1994-05-26 |
JPH04504943A (ja) | 1992-08-27 |
WO1991010296A1 (en) | 1991-07-11 |
NZ236235A (en) | 1993-04-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |