DE3679019D1 - Kombinierte kreuzpolarisationsinterferenzkompensation und intersymbolinterferenzentzerrung fuer erdgebundene digitale funksysteme. - Google Patents

Kombinierte kreuzpolarisationsinterferenzkompensation und intersymbolinterferenzentzerrung fuer erdgebundene digitale funksysteme.

Info

Publication number
DE3679019D1
DE3679019D1 DE8686111493T DE3679019T DE3679019D1 DE 3679019 D1 DE3679019 D1 DE 3679019D1 DE 8686111493 T DE8686111493 T DE 8686111493T DE 3679019 T DE3679019 T DE 3679019T DE 3679019 D1 DE3679019 D1 DE 3679019D1
Authority
DE
Germany
Prior art keywords
earth
digital radio
radio systems
based digital
combined cross
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
Application number
DE8686111493T
Other languages
English (en)
Inventor
Mohsen Kavehrad
Jack Salz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AT&T Corp
Original Assignee
American Telephone and Telegraph Co Inc
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 American Telephone and Telegraph Co Inc filed Critical American Telephone and Telegraph Co Inc
Application granted granted Critical
Publication of DE3679019D1 publication Critical patent/DE3679019D1/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/002Reducing depolarization effects
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00Baseband systems
    • H04L25/02Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006Arrangements for removing intersymbol interference
    • H04L25/03012Arrangements for removing intersymbol interference operating in the time domain
    • H04L25/03019Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception
    • H04L25/03038Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception with a non-recursive structure
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00Baseband systems
    • H04L25/02Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006Arrangements for removing intersymbol interference
    • H04L25/03012Arrangements for removing intersymbol interference operating in the time domain
    • H04L25/03019Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception
    • H04L25/03057Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception with a recursive structure
DE8686111493T 1985-08-28 1986-08-19 Kombinierte kreuzpolarisationsinterferenzkompensation und intersymbolinterferenzentzerrung fuer erdgebundene digitale funksysteme. Expired - Fee Related DE3679019D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/770,174 US4644562A (en) 1985-08-28 1985-08-28 Combined cross polarization interference cancellation and intersymbol interference equalization for terrestrial digital radio systems

Publications (1)

Publication Number Publication Date
DE3679019D1 true DE3679019D1 (de) 1991-06-06

Family

ID=25087707

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8686111493T Expired - Fee Related DE3679019D1 (de) 1985-08-28 1986-08-19 Kombinierte kreuzpolarisationsinterferenzkompensation und intersymbolinterferenzentzerrung fuer erdgebundene digitale funksysteme.

Country Status (4)

Country Link
US (1) US4644562A (de)
EP (1) EP0216141B1 (de)
JP (1) JPS6251325A (de)
DE (1) DE3679019D1 (de)

Families Citing this family (74)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1338153C (en) * 1987-11-10 1996-03-12 Yoshihiro Nozue Interference canceller
US4821289A (en) * 1987-12-21 1989-04-11 Cyclotomics, Inc. Multiple parallel channel equalization architecture
GB2214035A (en) * 1987-12-23 1989-08-23 Philips Electronic Associated Adjusting filter coefficients
US4856031A (en) * 1988-04-28 1989-08-08 General Datacomm, Inc. Adaptive multiharmonic phase jitter compensation
US5068668A (en) * 1989-09-06 1991-11-26 Hughes Aircraft Company Adaptive polarization combining system
CA2024997A1 (en) * 1990-03-06 1991-09-07 David J. Pope Adaptive equalisers
GB2241855B (en) * 1990-03-09 1994-03-23 Otc Ltd Improvements to adaptive equalisers
GB9008613D0 (en) * 1990-04-17 1990-06-13 Marconi Gec Ltd Reducing interference in r.f.signals
US5052023A (en) * 1990-07-20 1991-09-24 Motorola, Inc. Method and apparatus for received signal equalization
DE69228649T2 (de) * 1991-11-18 1999-08-12 Nec Corp Automatischer Entzerrer zur wirkungsvollen Kompensation der Nachbarsymbolinterferenz und der Kreuzpolarisationsinterferenz bei einer doppelten Gleichkanalpolarisation
JP2845250B2 (ja) * 1992-01-31 1999-01-13 日本電気株式会社 交差偏波干渉補償装置
FI94809C (fi) * 1992-04-01 1995-10-25 Ne Products Oy Radiokanavan häipymissimulaattori ja menetelmä häipymisen simuloimiseksi
FR2693062B1 (fr) * 1992-06-26 1994-09-23 France Telecom Procédé et dispositif égaliseur à retour de décisions pour la transmission par blocs de symboles d'information.
JPH0677767A (ja) * 1992-08-26 1994-03-18 Sony Corp ノンリニアキャンセラー
JP3179267B2 (ja) * 1993-01-19 2001-06-25 三菱電機株式会社 フィルタ及びこのフィルタを用いたキャリア位相推定装置
US5432725A (en) * 1993-12-15 1995-07-11 The United States Of America As Represented By The Secretary Of The Navy Self-adapting filter
US5442663A (en) * 1994-04-22 1995-08-15 Loral Aerospace Corp. Residual carrier adaptive cross-polarization equalizer
US5844951A (en) * 1994-06-10 1998-12-01 Northeastern University Method and apparatus for simultaneous beamforming and equalization
US5481572A (en) * 1994-08-02 1996-01-02 Ericsson Inc. Method of and apparatus for reducing the complexitiy of a diversity combining and sequence estimation receiver
US6081566A (en) * 1994-08-02 2000-06-27 Ericsson, Inc. Method and apparatus for interference rejection with different beams, polarizations, and phase references
US6173014B1 (en) 1994-08-02 2001-01-09 Telefonaktiebolaget Lm Ericsson Method of and apparatus for interference rejection combining and downlink beamforming in a cellular radio communications system
US5680419A (en) * 1994-08-02 1997-10-21 Ericsson Inc. Method of and apparatus for interference rejection combining in multi-antenna digital cellular communications systems
US5796788A (en) * 1996-04-19 1998-08-18 Ericsson Inc. Method and apparatus for interference decorrelation in time and space
US5933421A (en) * 1997-02-06 1999-08-03 At&T Wireless Services Inc. Method for frequency division duplex communications
US6501771B2 (en) 1997-02-11 2002-12-31 At&T Wireless Services, Inc. Delay compensation
US6584144B2 (en) 1997-02-24 2003-06-24 At&T Wireless Services, Inc. Vertical adaptive antenna array for a discrete multitone spread spectrum communications system
US6408016B1 (en) * 1997-02-24 2002-06-18 At&T Wireless Services, Inc. Adaptive weight update method and system for a discrete multitone spread spectrum communications system
US6359923B1 (en) 1997-12-18 2002-03-19 At&T Wireless Services, Inc. Highly bandwidth efficient communications
DE19747454C1 (de) * 1997-10-27 1998-10-29 Siemens Ag Verfahren und Empfangseinrichtung zur Datenübertragung in einem Kommunikationssystem
US6072439A (en) * 1998-01-15 2000-06-06 Andrew Corporation Base station antenna for dual polarization
US6643281B1 (en) 1998-03-05 2003-11-04 At&T Wireless Services, Inc. Synchronization preamble method for OFDM waveforms in a communications system
FR2776872B1 (fr) * 1998-03-25 2000-06-02 Nortel Matra Cellular Procede d'egalisation numerique, et recepteur de radiocommunication mettant en oeuvre un tel procede
US6034649A (en) * 1998-10-14 2000-03-07 Andrew Corporation Dual polarized based station antenna
EP1190543A4 (de) * 1999-06-01 2003-05-28 Peter Monsen Mehrfachszugriffssystem sowie verfahren für mehrstrahlige digitale funksysteme
US7072410B1 (en) 1999-06-01 2006-07-04 Peter Monsen Multiple access system and method for multibeam digital radio systems
US6470192B1 (en) 1999-08-16 2002-10-22 Telefonaktiebolaget Lm Ericcson (Publ) Method of an apparatus for beam reduction and combining in a radio communications system
US6285336B1 (en) 1999-11-03 2001-09-04 Andrew Corporation Folded dipole antenna
US6317099B1 (en) 2000-01-10 2001-11-13 Andrew Corporation Folded dipole antenna
US7088671B1 (en) 1999-11-24 2006-08-08 Peter Monsen Multiple access technique for downlink multibeam digital radio systems
US6628922B1 (en) 2000-03-21 2003-09-30 Harvey L. Berger Communication system utilizing multiple satellites without intersatellite crosslinks
US6636734B1 (en) 2000-05-17 2003-10-21 Northrop Grumman Corporation Dual receive ground terminal for use in communication systems utilizing multiple satellites
US6983125B2 (en) * 2001-09-25 2006-01-03 Qualcomm Incorporated Method and apparatus for varying the length of an adaptive equalizer based on doppler frequency
US6545639B1 (en) * 2001-10-09 2003-04-08 Lockheed Martin Corporation System and method for processing correlated contacts
US20040004945A1 (en) * 2001-10-22 2004-01-08 Peter Monsen Multiple access network and method for digital radio systems
WO2003077488A1 (en) * 2002-03-04 2003-09-18 Glowlink Communications Technology, Inc. Detecting and measuring interference contained within a digital carrier
EP1526641A1 (de) * 2003-10-22 2005-04-27 Alcatel Verfahren zur Bestimmung eines Filters, ein Filter und eine Telekommunikationsvorrichtung
US7463672B2 (en) * 2004-03-16 2008-12-09 Peter Monsen Technique for adaptive multiuser equalization in code division multiple access systems
US7046753B2 (en) * 2004-06-29 2006-05-16 Provigent Ltd. Interference canceller with fast phase adaptation
AU2005244521A1 (en) * 2004-12-20 2006-07-06 Nec Australia Pty Ltd Computing filter coefficients for an equaliser in a communication receiver
US7590204B2 (en) * 2005-02-14 2009-09-15 Peter Monsen Technique for adaptive equalization in band-limited high data rate communication over fading dispersive channels
US7751372B2 (en) * 2005-09-23 2010-07-06 Peter Monsen Technique for adaptive data rate communication over fading dispersive channels
US7613260B2 (en) * 2005-11-21 2009-11-03 Provigent Ltd Modem control using cross-polarization interference estimation
US7796708B2 (en) * 2006-03-29 2010-09-14 Provigent Ltd. Adaptive receiver loops with weighted decision-directed error
US7643512B2 (en) 2006-06-29 2010-01-05 Provigent Ltd. Cascaded links with adaptive coding and modulation
US7839952B2 (en) * 2006-12-05 2010-11-23 Provigent Ltd Data rate coordination in protected variable-rate links
US7720136B2 (en) 2006-12-26 2010-05-18 Provigent Ltd Adaptive coding and modulation based on link performance prediction
US8315574B2 (en) 2007-04-13 2012-11-20 Broadcom Corporation Management of variable-rate communication links
US7821938B2 (en) * 2007-04-20 2010-10-26 Provigent Ltd. Adaptive coding and modulation for synchronous connections
US8001445B2 (en) * 2007-08-13 2011-08-16 Provigent Ltd. Protected communication link with improved protection indication
US8040985B2 (en) 2007-10-09 2011-10-18 Provigent Ltd Decoding of forward error correction codes in the presence of phase noise
US8005368B2 (en) * 2007-12-05 2011-08-23 Ciena Corporation Signal equalizer in a coherent optical receiver
WO2010011500A1 (en) * 2008-07-25 2010-01-28 Smith International, Inc. Pdc bit having split blades
US9065594B1 (en) 2009-09-23 2015-06-23 Qualcomm Incorporated Profile-based packet rate adaptation for wireless systems
US8401121B1 (en) * 2010-05-13 2013-03-19 Qualcomm Incorporated Symbol error detection for bluetooth basic data rate packets
US8401120B1 (en) 2010-05-13 2013-03-19 Qualcomm Incorporated Symbol error detection for bluetooth enhanced data rate packets
US8396177B1 (en) 2010-09-03 2013-03-12 Dragonwave, Inc. Interference carrier regeneration and interference cancellation apparatus and methods
US9596035B2 (en) 2011-10-05 2017-03-14 Ciena Corporation Minimum variance carrier recovery with increased phase noise tolerance
US20160173149A1 (en) * 2013-04-09 2016-06-16 Maxlinear, Inc. Automatic Twist and Sway Compensation in a Microwave Backhaul Transceiver
US10425256B2 (en) * 2018-02-06 2019-09-24 Huawei Technologies Canada Co., Ltd. Methods and systems for interference mitigation in a dual-polarized communication system
US11824637B2 (en) 2019-05-22 2023-11-21 At&T Intellectual Property I, L.P. Generating wireless reference signals in a different domain for transmission
US10886991B2 (en) * 2019-05-22 2021-01-05 At&T Intellectual Property I, L.P. Facilitating sparsity adaptive feedback in the delay doppler domain in advanced networks
US10979151B2 (en) 2019-05-22 2021-04-13 At&T Intellectual Property I, L.P. Multidimensional grid sampling for radio frequency power feedback
US11050530B2 (en) 2019-06-27 2021-06-29 At&T Intellectual Property I, L.P. Generating wireless reference signals in a different domain for transmission with a collapsed time-frequency grid
US11005567B2 (en) * 2019-07-01 2021-05-11 Credo Technology Group Limited Efficient multi-mode DFE

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4053837A (en) * 1975-06-11 1977-10-11 Motorola Inc. Quadriphase shift keyed adaptive equalizer
US4181888A (en) * 1978-08-04 1980-01-01 Bell Telephone Laboratories, Incorporated Feedback nonlinear equalization of modulated data signals
US4321705A (en) * 1979-03-02 1982-03-23 Nippon Electronics Co., Ltd. Digital equalizer for a cross-polarization receiver
US4367555A (en) * 1979-07-24 1983-01-04 Nippon Electric Co., Ltd. Digital equalizer for a cross-polarization receiver
US4422175A (en) * 1981-06-11 1983-12-20 Racal-Vadic, Inc. Constrained adaptive equalizer
US4438530A (en) * 1982-06-14 1984-03-20 Bell Telephone Laboratories, Incorporated Adaptive cross-polarization interference cancellation system
US4577330A (en) * 1984-04-19 1986-03-18 At&T Bell Laboratories Cross-polarization interference cancellation arrangement for digital radio channels
US4606054A (en) * 1985-02-21 1986-08-12 At&T Bell Laboratories Cross-polarization interference cancellation

Also Published As

Publication number Publication date
EP0216141A2 (de) 1987-04-01
US4644562A (en) 1987-02-17
JPS6251325A (ja) 1987-03-06
EP0216141A3 (en) 1989-02-01
EP0216141B1 (de) 1991-05-02

Similar Documents

Publication Publication Date Title
DE3679019D1 (de) Kombinierte kreuzpolarisationsinterferenzkompensation und intersymbolinterferenzentzerrung fuer erdgebundene digitale funksysteme.
AU574995B2 (en) One frequency digital radio repeater
AU530445B2 (en) Digital radio system
EP0201254A3 (en) Terrestrial radio communications system
AU553846B2 (en) Duplex radio system
AU558636B2 (en) Digital radio systems
AU557144B2 (en) Multi-channel access radio telephone system
AU588176B2 (en) One frequency repeater for a digital radio system
IT8449262A0 (it) Sistema per comunicazioni radio con vasto campo di copertura
EP0227393A3 (en) Radio repeater with spillover measurement
AU532012B2 (en) Digital radio paging communication system
AU1552783A (en) Radio communication system
AU570386B2 (en) Radio communication system
AU1368583A (en) Radio repeater station timing
AU575277B2 (en) Digital repeater system monitoring
AU553356B2 (en) Digital communication system
EP0209182A3 (en) Radio transmission system
AU3101684A (en) System for supporting and retaining insulation
EP0235300A4 (de) Funkdaten-übertragungssystem.
EP0144083A3 (en) Radio communication system
EP0236759A3 (en) Radio communications system with reduced interference
GB2190266B (en) Multiple reproducing repeater station system
DE3474894D1 (en) Radio communication system
GB2176079B (en) Direction-adaptive repeater for guided radio systems
EP0180238A3 (en) Digital radio communication system

Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8328 Change in the person/name/address of the agent

Free format text: BLUMBACH, KRAMER & PARTNER, 65193 WIESBADEN

8339 Ceased/non-payment of the annual fee