DE69228801T2 - Phasenkorrektur für zeitschlitze in einem mehrkanalton-kommunikationssystem - Google Patents

Phasenkorrektur für zeitschlitze in einem mehrkanalton-kommunikationssystem

Info

Publication number
DE69228801T2
DE69228801T2 DE69228801T DE69228801T DE69228801T2 DE 69228801 T2 DE69228801 T2 DE 69228801T2 DE 69228801 T DE69228801 T DE 69228801T DE 69228801 T DE69228801 T DE 69228801T DE 69228801 T2 DE69228801 T2 DE 69228801T2
Authority
DE
Germany
Prior art keywords
auxiliary channel
phase
pilot
characters
time window
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
Application number
DE69228801T
Other languages
German (de)
English (en)
Other versions
DE69228801D1 (de
Inventor
Mark Birchler
Steven Jasper
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.)
Motorola Solutions Inc
Original Assignee
Motorola 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 Motorola Inc filed Critical Motorola Inc
Application granted granted Critical
Publication of DE69228801D1 publication Critical patent/DE69228801D1/de
Publication of DE69228801T2 publication Critical patent/DE69228801T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2614—Peak power aspects
    • H04L27/262—Reduction thereof by selection of pilot symbols

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
DE69228801T 1991-11-01 1992-09-23 Phasenkorrektur für zeitschlitze in einem mehrkanalton-kommunikationssystem Expired - Lifetime DE69228801T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/786,440 US5241544A (en) 1991-11-01 1991-11-01 Multi-channel tdm communication system slot phase correction
PCT/US1992/008069 WO1993009617A1 (en) 1991-11-01 1992-09-23 Multichannel tdm communication system slot phase correction

Publications (2)

Publication Number Publication Date
DE69228801D1 DE69228801D1 (de) 1999-05-06
DE69228801T2 true DE69228801T2 (de) 1999-10-07

Family

ID=25138582

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69228801T Expired - Lifetime DE69228801T2 (de) 1991-11-01 1992-09-23 Phasenkorrektur für zeitschlitze in einem mehrkanalton-kommunikationssystem

Country Status (5)

Country Link
US (1) US5241544A (enExample)
EP (1) EP0565659B1 (enExample)
JP (1) JP3163630B2 (enExample)
DE (1) DE69228801T2 (enExample)
WO (1) WO1993009617A1 (enExample)

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JP2720721B2 (ja) * 1992-08-21 1998-03-04 日本電気株式会社 変復調装置
US5521946A (en) * 1994-01-07 1996-05-28 The 3Do Company Multi-phase filter/DAC
US5666378A (en) * 1994-03-18 1997-09-09 Glenayre Electronics, Inc. High performance modem using pilot symbols for equalization and frame synchronization
US5627863A (en) 1994-07-15 1997-05-06 Amati Communications Corporation Frame synchronization in multicarrier transmission systems
US5809083A (en) * 1994-11-23 1998-09-15 At&T Wireless Services, Inc. Differentially encoded pilot word system and method for wireless transmissions of digital data
US5711009A (en) * 1996-04-01 1998-01-20 The United States Of America As Represented By The Secretary Of The Navy Method and apparatus for minimizing the effects of frequency selective fading on a PCM/FM data signal
US6581179B1 (en) * 1996-06-25 2003-06-17 Ericsson Inc. Methods for generating side information in the presence of time-selective fading
US6370156B2 (en) 1997-01-31 2002-04-09 Alcatel Modulation/demodulation of a pilot carrier, means and method to perform the modulation/demodulation
CA2424556C (en) * 1997-04-17 2009-11-24 Ntt Mobile Communications Network Inc. Base station apparatus of mobile communication system
EP0934638B1 (en) 1997-05-12 2008-10-08 Texas Instruments Incorporated Method and apparatus for superframe bit allocation in a discrete multitone (dmt) system
US6009122A (en) * 1997-05-12 1999-12-28 Amati Communciations Corporation Method and apparatus for superframe bit allocation
DE19724077A1 (de) * 1997-06-07 1998-12-10 Philips Patentverwaltung Digitaler Daten-Kodierer und Verfahren zur Datenkodierung
US6064692A (en) 1997-06-20 2000-05-16 Amati Communications Corporation Protocol for transceiver initialization
GB2335828B (en) * 1998-03-04 2003-08-20 Internat Mobile Satellite Orga Satellite Communications System
EP0981207A1 (en) * 1998-06-30 2000-02-23 Lucent Technologies Inc. Pilot symbols
US6654429B1 (en) * 1998-12-31 2003-11-25 At&T Corp. Pilot-aided channel estimation for OFDM in wireless systems
US6608868B1 (en) * 1999-01-19 2003-08-19 Matsushita Electric Industrial Co., Ltd. Apparatus and method for digital wireless communications
US7952511B1 (en) 1999-04-07 2011-05-31 Geer James L Method and apparatus for the detection of objects using electromagnetic wave attenuation patterns
ES2168956B1 (es) * 2000-04-10 2003-11-01 Gmv S A 30 Modulacion digital de fase con pulsos complementarios sobre portadoras independientes.
US6424678B1 (en) 2000-08-01 2002-07-23 Motorola, Inc. Scalable pattern methodology for multi-carrier communication systems
US6721267B2 (en) * 2000-08-01 2004-04-13 Motorola, Inc. Time and bandwidth scalable slot format for mobile data system
US6909755B2 (en) * 2001-03-27 2005-06-21 At&T Corp. Method and system for increasing data throughput in communications channels on an opportunistic basis
US8194770B2 (en) 2002-08-27 2012-06-05 Qualcomm Incorporated Coded MIMO systems with selective channel inversion applied per eigenmode
US8320301B2 (en) 2002-10-25 2012-11-27 Qualcomm Incorporated MIMO WLAN system
US20040081131A1 (en) 2002-10-25 2004-04-29 Walton Jay Rod OFDM communication system with multiple OFDM symbol sizes
US7986742B2 (en) * 2002-10-25 2011-07-26 Qualcomm Incorporated Pilots for MIMO communication system
US8208364B2 (en) 2002-10-25 2012-06-26 Qualcomm Incorporated MIMO system with multiple spatial multiplexing modes
US8170513B2 (en) 2002-10-25 2012-05-01 Qualcomm Incorporated Data detection and demodulation for wireless communication systems
US8570988B2 (en) 2002-10-25 2013-10-29 Qualcomm Incorporated Channel calibration for a time division duplexed communication system
US7324429B2 (en) 2002-10-25 2008-01-29 Qualcomm, Incorporated Multi-mode terminal in a wireless MIMO system
US8169944B2 (en) 2002-10-25 2012-05-01 Qualcomm Incorporated Random access for wireless multiple-access communication systems
US7002900B2 (en) 2002-10-25 2006-02-21 Qualcomm Incorporated Transmit diversity processing for a multi-antenna communication system
US8134976B2 (en) 2002-10-25 2012-03-13 Qualcomm Incorporated Channel calibration for a time division duplexed communication system
US8218609B2 (en) 2002-10-25 2012-07-10 Qualcomm Incorporated Closed-loop rate control for a multi-channel communication system
US7533435B2 (en) * 2003-05-14 2009-05-19 Karcher North America, Inc. Floor treatment apparatus
US6985535B2 (en) * 2003-10-31 2006-01-10 Motorola, Inc. Channel condition estimation for pilot coefficient selection
US9473269B2 (en) 2003-12-01 2016-10-18 Qualcomm Incorporated Method and apparatus for providing an efficient control channel structure in a wireless communication system
US7466749B2 (en) 2005-05-12 2008-12-16 Qualcomm Incorporated Rate selection with margin sharing
US8358714B2 (en) 2005-06-16 2013-01-22 Qualcomm Incorporated Coding and modulation for multiple data streams in a communication system
JP4901497B2 (ja) * 2007-01-19 2012-03-21 株式会社東芝 通信システム、送信機、受信機、通信方法、送信機検出方法、通信手順設定方法
GB0801413D0 (en) * 2008-01-25 2008-03-05 Nokia Corp Calibration technique
WO2012108912A1 (en) 2011-02-07 2012-08-16 Intel Corporation Co-phasing of transmissions from multiple infrastructure nodes
US9853715B2 (en) * 2014-02-17 2017-12-26 Ubiqomm Llc Broadband access system via drone/UAV platforms
US9859972B2 (en) 2014-02-17 2018-01-02 Ubiqomm Llc Broadband access to mobile platforms using drone/UAV background
US9853712B2 (en) 2014-02-17 2017-12-26 Ubiqomm Llc Broadband access system via drone/UAV platforms
US9571180B2 (en) 2014-10-16 2017-02-14 Ubiqomm Llc Unmanned aerial vehicle (UAV) beam forming and pointing toward ground coverage area cells for broadband access
US9712228B2 (en) 2014-11-06 2017-07-18 Ubiqomm Llc Beam forming and pointing in a network of unmanned aerial vehicles (UAVs) for broadband access
US9660718B2 (en) 2015-05-13 2017-05-23 Ubiqomm, LLC Ground terminal and UAV beam pointing in an unmanned aerial vehicle (UAV) for network access
US9590720B2 (en) 2015-05-13 2017-03-07 Ubiqomm Llc Ground terminal and gateway beam pointing toward an unmanned aerial vehicle (UAV) for network access
US9980267B2 (en) 2016-05-06 2018-05-22 Bridgewest Finance Llc Unmanned aerial vehicle (UAV) beam pointing and data rate optimization for high throughput broadband access

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US3404229A (en) * 1965-07-30 1968-10-01 Navy Usa System for reducing phase distortion in the phase reference signals of a multichannel phase-shift data system
US4206320A (en) * 1978-08-21 1980-06-03 University Of Illinois Foundation High speed modem suitable for operating with a switched network
US4438511A (en) * 1980-11-10 1984-03-20 Telebit Corporation Packetized ensemble modem
US4464767A (en) * 1981-09-08 1984-08-07 Paradyne Corporation System for generation of multiple pointed QAM signal spaces by use of synchronous Qam transmitters
US4494239A (en) * 1982-05-26 1985-01-15 At&T Bell Laboratories Frame synchronization and phase ambiguity resolution in QAM transmission systems
JPS601943A (ja) * 1983-06-17 1985-01-08 Kokusai Denshin Denwa Co Ltd <Kdd> 複数の位相偏移変調波を同時に一括して得る変調器
US4730344A (en) * 1984-08-13 1988-03-08 The University Of Michigan Quadrature-quadrature phase shift keying with constant envelope

Also Published As

Publication number Publication date
EP0565659A4 (enExample) 1994-02-16
EP0565659A1 (en) 1993-10-20
EP0565659B1 (en) 1999-03-31
JPH06504178A (ja) 1994-05-12
JP3163630B2 (ja) 2001-05-08
WO1993009617A1 (en) 1993-05-13
DE69228801D1 (de) 1999-05-06
US5241544A (en) 1993-08-31

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