AU2001245364A1 - Method and apparatus for mobile platform reception and synchronization in directdigital satellite broadcast system - Google Patents

Method and apparatus for mobile platform reception and synchronization in directdigital satellite broadcast system

Info

Publication number
AU2001245364A1
AU2001245364A1 AU2001245364A AU4536401A AU2001245364A1 AU 2001245364 A1 AU2001245364 A1 AU 2001245364A1 AU 2001245364 A AU2001245364 A AU 2001245364A AU 4536401 A AU4536401 A AU 4536401A AU 2001245364 A1 AU2001245364 A1 AU 2001245364A1
Authority
AU
Australia
Prior art keywords
directdigital
synchronization
mobile platform
broadcast system
satellite broadcast
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.)
Abandoned
Application number
AU2001245364A
Inventor
S. Joseph Campanella
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.)
WorldSpace Management Corp
Original Assignee
WorldSpace Management Corp
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 WorldSpace Management Corp filed Critical WorldSpace Management Corp
Publication of AU2001245364A1 publication Critical patent/AU2001245364A1/en
Abandoned legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/26Systems using multi-frequency codes
    • H04L27/2601Multicarrier modulation systems
    • H04L27/2647Arrangements specific to the receiver only
    • H04L27/2655Synchronisation arrangements
    • H04L27/2662Symbol synchronisation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/14Relay systems
    • H04B7/15Active relay systems
    • H04B7/185Space-based or airborne stations; Stations for satellite systems
    • H04B7/1853Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
    • H04B7/18532Arrangements for managing transmission, i.e. for transporting data or a signalling message
    • H04B7/18534Arrangements for managing transmission, i.e. for transporting data or a signalling message for enhancing link reliablility, e.g. satellites diversity
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/26Systems using multi-frequency codes
    • H04L27/2601Multicarrier modulation systems
    • H04L27/2602Signal structure
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/26Systems using multi-frequency codes
    • H04L27/2601Multicarrier modulation systems
    • H04L27/2626Arrangements specific to the transmitter only
    • H04L27/2627Modulators
    • H04L27/2628Inverse Fourier transform modulators, e.g. inverse fast Fourier transform [IFFT] or inverse discrete Fourier transform [IDFT] modulators
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/26Systems using multi-frequency codes
    • H04L27/2601Multicarrier modulation systems
    • H04L27/2647Arrangements specific to the receiver only
    • H04L27/2655Synchronisation arrangements
    • H04L27/2657Carrier synchronisation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/26Systems using multi-frequency codes
    • H04L27/2601Multicarrier modulation systems
    • H04L27/2647Arrangements specific to the receiver only
    • H04L27/2655Synchronisation arrangements
    • H04L27/2668Details of algorithms
    • H04L27/2673Details of algorithms characterised by synchronisation parameters
    • H04L27/2675Pilot or known symbols
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04JMULTIPLEX COMMUNICATION
    • H04J3/00Time-division multiplex systems
    • H04J3/02Details
    • H04J3/06Synchronising arrangements
    • H04J3/0602Systems characterised by the synchronising information used
AU2001245364A 2000-02-29 2001-02-28 Method and apparatus for mobile platform reception and synchronization in directdigital satellite broadcast system Abandoned AU2001245364A1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US18570100P 2000-02-29 2000-02-29
US60185701 2000-02-29
US09/640,686 US6956814B1 (en) 2000-02-29 2000-08-18 Method and apparatus for mobile platform reception and synchronization in direct digital satellite broadcast system
US09640686 2000-08-18
PCT/US2001/006337 WO2001065749A1 (en) 2000-02-29 2001-02-28 Method and apparatus for mobile platform reception and synchronization in direct digital satellite broadcast system

Publications (1)

Publication Number Publication Date
AU2001245364A1 true AU2001245364A1 (en) 2001-09-12

Family

ID=26881378

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2001245364A Abandoned AU2001245364A1 (en) 2000-02-29 2001-02-28 Method and apparatus for mobile platform reception and synchronization in directdigital satellite broadcast system

Country Status (11)

Country Link
US (1) US6956814B1 (en)
EP (1) EP1266470A4 (en)
KR (1) KR20020079971A (en)
CN (1) CN1426640A (en)
AR (1) AR031095A1 (en)
AU (1) AU2001245364A1 (en)
EG (1) EG22781A (en)
HK (1) HK1054472A1 (en)
RU (1) RU2276464C2 (en)
TW (1) TW545006B (en)
WO (1) WO2001065749A1 (en)

Families Citing this family (142)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7952511B1 (en) 1999-04-07 2011-05-31 Geer James L Method and apparatus for the detection of objects using electromagnetic wave attenuation patterns
DE60102157T2 (en) * 2001-09-24 2004-07-29 Evolium S.A.S. Method for the synchronization of nodes of a terrestrial network provided with GNSS receivers
US20030103578A1 (en) * 2001-12-04 2003-06-05 Yeh Alex C. Method and system for determining tap gain values for a transmit frequency domain equalizer to achieve unity power gain
US8194770B2 (en) 2002-08-27 2012-06-05 Qualcomm Incorporated Coded MIMO systems with selective channel inversion applied per eigenmode
US7002900B2 (en) 2002-10-25 2006-02-21 Qualcomm Incorporated Transmit diversity processing for a multi-antenna communication system
US8170513B2 (en) 2002-10-25 2012-05-01 Qualcomm Incorporated Data detection and demodulation for wireless communication systems
US8218609B2 (en) 2002-10-25 2012-07-10 Qualcomm Incorporated Closed-loop rate control for a multi-channel communication system
US7986742B2 (en) 2002-10-25 2011-07-26 Qualcomm Incorporated Pilots for MIMO communication system
US8169944B2 (en) 2002-10-25 2012-05-01 Qualcomm Incorporated Random access for wireless multiple-access communication systems
US7324429B2 (en) 2002-10-25 2008-01-29 Qualcomm, Incorporated Multi-mode terminal in a wireless MIMO system
US8134976B2 (en) 2002-10-25 2012-03-13 Qualcomm Incorporated Channel calibration for a time division duplexed communication system
US8320301B2 (en) 2002-10-25 2012-11-27 Qualcomm Incorporated MIMO WLAN system
US8570988B2 (en) 2002-10-25 2013-10-29 Qualcomm Incorporated Channel calibration for a time division duplexed communication system
US20040081131A1 (en) 2002-10-25 2004-04-29 Walton Jay Rod OFDM communication system with multiple OFDM symbol sizes
US8208364B2 (en) 2002-10-25 2012-06-26 Qualcomm Incorporated MIMO system with multiple spatial multiplexing modes
JP4163971B2 (en) * 2003-02-06 2008-10-08 松下電器産業株式会社 Transmitting apparatus and transmitting method
DE10354468A1 (en) * 2003-11-21 2005-06-23 Rohde & Schwarz Gmbh & Co. Kg Method and device for monitoring the carrier frequency stability of transmitters in a common wave network
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
US7983142B2 (en) 2004-03-30 2011-07-19 Intel Corporation Apparatus, systems, and methods for the reception and synchronization of asynchronous signals
DE102004018200A1 (en) * 2004-04-15 2005-11-10 Deutsche Thomson-Brandt Gmbh A method for processing a sequence of data packets in a receiver device and receiver device
US8527855B2 (en) * 2004-08-16 2013-09-03 Koninklijke Philips N.V. Interleaving and parsing for MIMO-OFDM systems
TWI273856B (en) * 2004-11-23 2007-02-11 Cheng-Hao Chien The method and the system to assess the shadowing effect of wireless communication
EP2254265A3 (en) 2005-01-05 2013-11-27 ATC Technologies, LLC Adaptive beam forming with multi-user detection and interference reduction in satellite communication systems and methods
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
KR100724980B1 (en) * 2005-06-28 2007-06-04 삼성전자주식회사 Dual mode DMB terminal capable of receiving satellite DMB and terrestrial DMB simultaneously
KR101154979B1 (en) * 2005-07-22 2012-06-18 엘지전자 주식회사 apparatus for receiving and transmitting data of multi-carrier system and method for receiving and transmitting data using the same
AU2006280065B2 (en) * 2005-08-09 2010-09-30 Atc Technologies, Llc Satellite communications systems and methods using substantially co-located feeder link antennas
CN101150547B (en) * 2005-09-13 2012-05-02 华为技术有限公司 Method and device for eliminating differential transfer delay difference
CN1933465B (en) * 2005-09-13 2010-09-08 华为技术有限公司 Method and device for eliminating differential transmission delay difference
US8811369B2 (en) 2006-01-11 2014-08-19 Qualcomm Incorporated Methods and apparatus for supporting multiple communications modes of operation
US8804677B2 (en) 2006-01-11 2014-08-12 Qualcomm Incorporated Methods and apparatus for establishing communications between devices with differing capabilities
US20070177492A1 (en) * 2006-01-27 2007-08-02 Qualcomm Incorporated Methods and tools for expanding coverage of an ofdm broadcast transmitter via transmit timing advance
CN101076015B (en) * 2006-05-17 2010-05-12 中兴通讯股份有限公司 Method for controlling data transmission under frame protocol multi-service
CN103889063B (en) * 2006-06-19 2018-10-09 高智第二有限责任公司 System for eliminating inter-cell interference and scheduler
US7792137B2 (en) * 2006-07-05 2010-09-07 Abidanet, Llc Self-organized and self-managed ad hoc communications network
CN100551111C (en) * 2006-08-08 2009-10-14 中兴通讯股份有限公司 Single frequency network planning method based on orthogonal frequency division multiplexi
US7904020B2 (en) * 2006-08-22 2011-03-08 Viasat, Inc. Downstream broad beam diversity with interference cancellation
US8630223B2 (en) 2006-09-18 2014-01-14 Availink, Inc. Efficient frame structure for digital satellite communication
WO2008034292A1 (en) * 2006-09-18 2008-03-27 Ming Yang Efficient frame structure for digital satellite communication
US8976727B2 (en) * 2006-10-22 2015-03-10 Viasat, Inc. Cyclical obstruction communication system
RU2446586C2 (en) * 2006-12-28 2012-03-27 Фудзицу Лимитед Transmitter and receiver in cellular communications system
AU2006352573B2 (en) * 2006-12-28 2011-02-10 Fujitsu Limited Transmitting device and receiving device in cellular system
CN101001101B (en) * 2007-01-10 2010-05-12 北京航空航天大学 Satellite ground link switch-over method of mobile satellite network
JP4601637B2 (en) * 2007-03-20 2010-12-22 株式会社エヌ・ティ・ティ・ドコモ Mobile station, transmission method, and wireless communication system
US8676115B2 (en) 2007-03-29 2014-03-18 Qualcomm Incorporated Apparatus and methods for testing using modulation error ratio
US9559768B2 (en) * 2007-05-25 2017-01-31 Telefonaktiebolaget Lm Ericsson (Publ) Same frequency satellite terrestrial radio broadcast
US8830946B2 (en) * 2007-10-24 2014-09-09 Nokia Siemens Networks Oy Method and apparatus of providing a frame structure for supporting different operational modes
US8284826B2 (en) * 2007-11-02 2012-10-09 Qualcomm Incorporated Synchronization of satellite and terrestrial broadcast ODFM signals
US8918112B2 (en) 2007-11-16 2014-12-23 Qualcomm Incorporated Preamble design for a wireless signal
US9264976B2 (en) 2007-11-16 2016-02-16 Qualcomm Incorporated Preamble design for a wireless signal
US9215669B2 (en) 2007-11-16 2015-12-15 Qualcomm Incorporated Preamble design for a wireless signal
RU2454038C2 (en) * 2007-11-16 2012-06-20 Квэлкомм Инкорпорейтед Preamble structure for wireless signal
RU2461148C2 (en) * 2007-11-16 2012-09-10 Квэлкомм Инкорпорейтед Header scheme for wireless signal
US20090170424A1 (en) * 2007-12-31 2009-07-02 Agere Systems, Inc. Low power mode for sdars receiver
US9801188B2 (en) 2008-02-01 2017-10-24 Qualcomm Incorporated Backhaul signaling for interference avoidance
US8768372B2 (en) 2008-02-13 2014-07-01 Qualcomm Incorporated Sector interference management based on inter-sector performance
US8595501B2 (en) 2008-05-09 2013-11-26 Qualcomm Incorporated Network helper for authentication between a token and verifiers
EP2204926A3 (en) 2008-12-02 2011-04-20 Electronics and Telecommunications Research Institute Apparatus for mobile satellite communications and method of controlling communications route
CN102025402A (en) * 2009-09-14 2011-04-20 国家广播电影电视总局广播科学研究院 Real-time satellite broadcast receiving method for train
US8243750B2 (en) * 2009-10-30 2012-08-14 Motorola Solutions, Inc. Method of control signaling in a wireless communication system
US20110116386A1 (en) * 2009-11-16 2011-05-19 General Dynamics C4 Systems, Inc. Transmission control in a wireless communication system
KR101267632B1 (en) * 2009-12-18 2013-05-23 한국전자통신연구원 Transmitter and receiver for terrestrial digital multimediabroadcasting
RU2491717C2 (en) * 2010-05-04 2013-08-27 Попик Павел Иванович Method of increasing signal-to-noise level (ratio) using "disturbance damping principle"
US10681568B1 (en) 2010-05-28 2020-06-09 Cohere Technologies, Inc. Methods of data channel characterization and uses thereof
US9444514B2 (en) 2010-05-28 2016-09-13 Cohere Technologies, Inc. OTFS methods of data channel characterization and uses thereof
US11943089B2 (en) 2010-05-28 2024-03-26 Cohere Technologies, Inc. Modulation and equalization in an orthonormal time-shifting communications system
US10667148B1 (en) 2010-05-28 2020-05-26 Cohere Technologies, Inc. Methods of operating and implementing wireless communications systems
US9130638B2 (en) 2011-05-26 2015-09-08 Cohere Technologies, Inc. Modulation and equalization in an orthonormal time-frequency shifting communications system
US8976851B2 (en) 2011-05-26 2015-03-10 Cohere Technologies, Inc. Modulation and equalization in an orthonormal time-frequency shifting communications system
US9071285B2 (en) 2011-05-26 2015-06-30 Cohere Technologies, Inc. Modulation and equalization in an orthonormal time-frequency shifting communications system
US9071286B2 (en) 2011-05-26 2015-06-30 Cohere Technologies, Inc. Modulation and equalization in an orthonormal time-frequency shifting communications system
CN101964689A (en) * 2010-08-20 2011-02-02 惠州中城电子科技有限公司 Method for improving time accuracy of electric energy information acquisition system
GB2489750A (en) * 2011-04-08 2012-10-10 Samsung Electronics Co Ltd Frame structure and signalling for wireless broadcast system
KR101273358B1 (en) * 2011-05-31 2013-06-12 한국항공대학교산학협력단 A method and apparatus for transmitting and receiving advanced terrestrial digital multimedia broadcasting system signal in a communication system
KR101947246B1 (en) 2011-11-04 2019-04-03 인텔 코포레이션 Timing synchronization for downlink (dl) transmissions in coordinated multipoint (comp) systems
CA2932387C (en) * 2011-11-04 2018-10-02 Intel Corporation Coordination of self-optimization operations in a self organizing network
CN103457692B (en) * 2012-06-04 2017-04-12 宏碁股份有限公司 Signal timing sequence compensating system and method
US10003487B2 (en) 2013-03-15 2018-06-19 Cohere Technologies, Inc. Symplectic orthogonal time frequency space modulation system
US10090972B2 (en) 2012-06-25 2018-10-02 Cohere Technologies, Inc. System and method for two-dimensional equalization in an orthogonal time frequency space communication system
US9912507B2 (en) 2012-06-25 2018-03-06 Cohere Technologies, Inc. Orthogonal time frequency space communication system compatible with OFDM
US9929783B2 (en) 2012-06-25 2018-03-27 Cohere Technologies, Inc. Orthogonal time frequency space modulation system
US10469215B2 (en) 2012-06-25 2019-11-05 Cohere Technologies, Inc. Orthogonal time frequency space modulation system for the Internet of Things
US10411843B2 (en) * 2012-06-25 2019-09-10 Cohere Technologies, Inc. Orthogonal time frequency space communication system compatible with OFDM
FR2994367B1 (en) * 2012-08-03 2016-07-15 Thales Sa METHOD AND SYSTEM FOR SYNCHRONIZATION
US9081684B2 (en) * 2013-08-28 2015-07-14 Landis+Gyr Technologies, Llc Data recovery of data symbols received in error
RU2660958C2 (en) * 2013-12-11 2018-07-11 Тосет Лимитед Inclined orbit satellite systems
CN103795671A (en) * 2014-01-13 2014-05-14 宁波大学 Single-frequency-network robust mobile multimedia broadcast signal framing and modulating method
CN104181501B (en) * 2014-08-21 2017-11-03 上海交通大学 Alignment system and localization method based on received terrestrial digital broadcasting TV signal
MX2017003717A (en) 2014-09-22 2017-11-30 Drnc Holdings Inc Transmission apparatus for a wireless device using delta-sigma modulation.
WO2016183230A1 (en) 2015-05-11 2016-11-17 Cohere Technologies Systems and methods for symplectic orthogonal time frequency shifting modulation and transmission of data
US10090973B2 (en) 2015-05-11 2018-10-02 Cohere Technologies, Inc. Multiple access in an orthogonal time frequency space communication system
US9866363B2 (en) 2015-06-18 2018-01-09 Cohere Technologies, Inc. System and method for coordinated management of network access points
US10574317B2 (en) 2015-06-18 2020-02-25 Cohere Technologies, Inc. System and method for providing wireless communication services using configurable broadband infrastructure shared among multiple network operators
CN108353052B (en) 2015-06-27 2021-12-03 凝聚技术股份有限公司 Orthogonal time-frequency space communication system compatible with OFDM
US10693581B2 (en) 2015-07-12 2020-06-23 Cohere Technologies, Inc. Orthogonal time frequency space modulation over a plurality of narrow band subcarriers
US9991950B2 (en) * 2015-07-24 2018-06-05 Worldvu Satellites Limited Communication-satellite system with enhanced capacity in designated locations
EP3348015B1 (en) 2015-09-07 2022-09-07 Cohere Technologies, Inc. Multiple access using orthogonal time frequency space modulation
WO2017083353A1 (en) 2015-11-09 2017-05-18 Wiser Systems, Inc. Methods for synchronizing multiple devices and determining location based on the synchronized devices
CN105282857B (en) * 2015-11-16 2018-10-23 中国电子科技集团公司第十研究所 Adaptive Transmission keeps the continuous method of data
US11038733B2 (en) 2015-11-18 2021-06-15 Cohere Technologies, Inc. Orthogonal time frequency space modulation techniques
WO2017100666A1 (en) 2015-12-09 2017-06-15 Cohere Technologies Pilot packing using complex orthogonal functions
US10666314B2 (en) 2016-02-25 2020-05-26 Cohere Technologies, Inc. Reference signal packing for wireless communications
CN109314619B (en) 2016-03-23 2021-05-25 凝聚技术公司 Receiver-side processing of quadrature time frequency space modulated signals
US9667307B1 (en) 2016-03-31 2017-05-30 Cohere Technologies Wireless telecommunications system for high-mobility applications
EP3437190B1 (en) 2016-03-31 2023-09-06 Cohere Technologies, Inc. Channel acquisition using orthogonal time frequency space modulated pilot signal
CN113726700A (en) 2016-04-01 2021-11-30 凝聚技术公司 Iterative two-dimensional equalization of orthogonal time-frequency space modulated signals
KR102250054B1 (en) 2016-04-01 2021-05-07 코히어 테크널러지스, 아이엔씨. TOMLINSON-HARASHIMA precoding in OTFS communication system
US10938602B2 (en) 2016-05-20 2021-03-02 Cohere Technologies, Inc. Iterative channel estimation and equalization with superimposed reference signals
WO2018031938A1 (en) 2016-08-12 2018-02-15 Cohere Technologies Multi-user multiplexing of orthogonal time frequency space signals
EP3497799A4 (en) 2016-08-12 2020-04-15 Cohere Technologies, Inc. Iterative multi-level equalization and decoding
WO2018032016A1 (en) 2016-08-12 2018-02-15 Cohere Technologies Localized equalization for channels with intercarrier interference
WO2018064587A1 (en) 2016-09-29 2018-04-05 Cohere Technologies Transport block segmentation for multi-level codes
WO2018064605A1 (en) 2016-09-30 2018-04-05 Cohere Technologies Uplink user resource allocation for orthogonal time frequency space modulation
WO2018106731A1 (en) 2016-12-05 2018-06-14 Cohere Technologies Fixed wireless access using orthogonal time frequency space modulation
WO2018129554A1 (en) 2017-01-09 2018-07-12 Cohere Technologies Pilot scrambling for channel estimation
US10084537B2 (en) * 2017-01-17 2018-09-25 Nokia Solutions And Networks Oy Method and apparatus for synchronization
US10356632B2 (en) 2017-01-27 2019-07-16 Cohere Technologies, Inc. Variable beamwidth multiband antenna
US10568143B2 (en) 2017-03-28 2020-02-18 Cohere Technologies, Inc. Windowed sequence for random access method and apparatus
US11817987B2 (en) 2017-04-11 2023-11-14 Cohere Technologies, Inc. Digital communication using dispersed orthogonal time frequency space modulated signals
WO2018195548A1 (en) 2017-04-21 2018-10-25 Cohere Technologies Communication techniques using quasi-static properties of wireless channels
WO2018200567A1 (en) 2017-04-24 2018-11-01 Cohere Technologies Multibeam antenna designs and operation
EP3616341A4 (en) 2017-04-24 2020-12-30 Cohere Technologies, Inc. Digital communication using lattice division multiplexing
EP3652907A4 (en) 2017-07-12 2021-04-07 Cohere Technologies, Inc. Data modulation schemes based on the zak transform
WO2019032605A1 (en) 2017-08-11 2019-02-14 Cohere Technologies Ray tracing technique for wireless channel measurements
US11324008B2 (en) 2017-08-14 2022-05-03 Cohere Technologies, Inc. Transmission resource allocation by splitting physical resource blocks
EP3679493B1 (en) 2017-09-06 2024-03-13 Cohere Technologies, Inc. Lattice reduction in orthogonal time frequency space modulation
WO2019051427A1 (en) 2017-09-11 2019-03-14 Cohere Technologies, Inc. Wireless local area networks using orthogonal time frequency space modulation
WO2019055861A1 (en) 2017-09-15 2019-03-21 Cohere Technologies, Inc. Achieving synchronization in an orthogonal time frequency space signal receiver
US11532891B2 (en) 2017-09-20 2022-12-20 Cohere Technologies, Inc. Low cost electromagnetic feed network
WO2019068053A1 (en) 2017-09-29 2019-04-04 Cohere Technologies, Inc. Forward error correction using non-binary low density parity check codes
WO2019089986A1 (en) 2017-11-01 2019-05-09 Cohere Technologies, Inc. Precoding in wireless systems using orthogonal time frequency space multiplexing
CN107682074B (en) * 2017-11-08 2024-03-29 南京天际易达通信技术有限公司 Satellite uplink signal transmitting time compensation method, device and communication system
WO2019113046A1 (en) 2017-12-04 2019-06-13 Cohere Technologies, Inc. Implementation of orthogonal time frequency space modulation for wireless communications
WO2019140049A1 (en) 2018-01-10 2019-07-18 Lumeova, Inc. Method, devices and system for wireless communication channels fso
WO2019157230A1 (en) 2018-02-08 2019-08-15 Cohere Technologies, Inc. Aspects of channel estimation for orthogonal time frequency space modulation for wireless communications
US11489559B2 (en) 2018-03-08 2022-11-01 Cohere Technologies, Inc. Scheduling multi-user MIMO transmissions in fixed wireless access systems
EP3807952A4 (en) 2018-06-13 2021-07-28 Cohere Technologies, Inc. Reciprocal calibration for channel estimation based on second-order statistics
US11522600B1 (en) 2018-08-01 2022-12-06 Cohere Technologies, Inc. Airborne RF-head system
JP6667588B1 (en) * 2018-09-18 2020-03-18 Hapsモバイル株式会社 Control device, program, control method, and flying object
CN109495160B (en) * 2018-12-04 2021-04-02 航天科工空间工程发展有限公司 Low-earth-orbit communication satellite constellation and gateway station communication planning method
CN109919378B (en) * 2019-03-06 2023-01-06 合肥工业大学 Satellite-borne autonomous planning system

Family Cites Families (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2464601B1 (en) 1979-08-29 1986-10-24 Trt Telecom Radio Electr SYSTEM FOR THE DIGITAL BROADCASTING OF MULTIPLE INFORMATION SIGNALS BY A NETWORK OF TRANSMITTERS USING SUBSTANTIALLY THE SAME CARRIER FREQUENCY
US4901307A (en) 1986-10-17 1990-02-13 Qualcomm, Inc. Spread spectrum multiple access communication system using satellite or terrestrial repeaters
US4881241A (en) 1988-02-24 1989-11-14 Centre National D'etudes Des Telecommunications Method and installation for digital communication, particularly between and toward moving vehicles
US5191576A (en) 1988-11-18 1993-03-02 L'Etat Francais and Telediffusion de France S.A. Method for broadcasting of digital data, notably for radio broadcasting at high throughput rate towards mobile receivers, with time frequency interlacing and analog synchronization
FR2658017B1 (en) 1990-02-06 1992-06-05 France Etat METHOD FOR BROADCASTING DIGITAL DATA, ESPECIALLY FOR BROADBAND BROADCASTING TO MOBILES, WITH TIME-FREQUENCY INTERLACING AND ASSISTING THE ACQUISITION OF AUTOMATIC FREQUENCY CONTROL, AND CORRESPONDING RECEIVER.
US5283780A (en) 1990-10-18 1994-02-01 Stanford Telecommunications, Inc. Digital audio broadcasting system
US5303393A (en) 1990-11-06 1994-04-12 Radio Satellite Corporation Integrated radio satellite response system and method
US5239671A (en) 1990-11-13 1993-08-24 Pagemart, Inc. Simulcast satellite paging system with provision for signal interruption
SG44771A1 (en) 1991-02-28 1997-12-19 Philips Electronics Nv System for broadcasting and receiving digital data receiver and transmitter for use in such system
US5485485A (en) 1992-04-10 1996-01-16 Cd Radio Inc. Radio frequency broadcasting systems and methods using two low-cost geosynchronous satellites and hemispherical coverage antennas
US5278863A (en) 1992-04-10 1994-01-11 Cd Radio Incorporated Radio frequency broadcasting systems and methods using two low-cost geosynchronous satellites
US5450448A (en) 1993-04-30 1995-09-12 Trimble Navigation Limited Removal of signal errors for differential satellite positioning systems
US5450456A (en) 1993-11-12 1995-09-12 Daimler Benz Ag Method and arrangement for measuring the carrier frequency deviation in a multi-channel transmission system
US5454009A (en) 1994-01-13 1995-09-26 Scientific-Atlanta, Inc. Method and apparatus for providing energy dispersal using frequency diversity in a satellite communications system
US5659353A (en) 1995-03-17 1997-08-19 Bell Atlantic Network Services, Inc. Television distribution system and method
GB2299494B (en) 1995-03-30 1999-11-03 Northern Telecom Ltd Communications Repeater
US5592471A (en) 1995-04-21 1997-01-07 Cd Radio Inc. Mobile radio receivers using time diversity to avoid service outages in multichannel broadcast transmission systems
US5991345A (en) * 1995-09-22 1999-11-23 Qualcomm Incorporated Method and apparatus for diversity enhancement using pseudo-multipath signals
JP3399725B2 (en) 1995-10-31 2003-04-21 富士通株式会社 Multimedia wireless communication system for asynchronous transfer mode
US5835487A (en) * 1995-12-08 1998-11-10 Worldspace International Network, Inc. Satellite direct radio broadcast system
US5802117A (en) 1996-02-08 1998-09-01 Philips Electronics North America Corporation Method and apparatus for joint frequency offset and timing estimation of a multicarrier modulation system
US5864579A (en) * 1996-07-25 1999-01-26 Cd Radio Inc. Digital radio satellite and terrestrial ubiquitous broadcasting system using spread spectrum modulation
US5867490A (en) * 1996-11-05 1999-02-02 Worldspace International Network, Inc. Direct radio broadcast receiver for providing frame synchronization and correlation for time division multiplexed transmissions
US6128276A (en) 1997-02-24 2000-10-03 Radix Wireless, Inc. Stacked-carrier discrete multiple tone communication technology and combinations with code nulling, interference cancellation, retrodirective communication and adaptive antenna arrays
US5794138A (en) 1997-02-26 1998-08-11 Cd Radio Inc. Satellite broadcast system receiver
ZA983650B (en) * 1998-04-10 1998-11-24 Worldspace Management Corp Digital broadcast system using satellite direct broadcast system and terresterial repeater system
JP3455182B2 (en) * 1998-04-14 2003-10-14 フラウンホッファー−ゲゼルシャフト ツァー フォルデルング ダー アンゲヴァンドテン フォルシュング イー.ヴイ. Dual mode receiver for receiving satellite signal and terrestrial signal in digital broadcasting system
BR9815808B1 (en) * 1998-04-14 2012-10-30 method and apparatus for fine frequency synchronization in multi-carrier demodulation systems.
US6301313B1 (en) * 1998-11-02 2001-10-09 Hughes Electronics Corporation Mobile digital radio system with spatial and time diversity capability
US6724827B1 (en) * 1999-05-25 2004-04-20 Xm Satellite Radio, Inc. Low cost interoperable satellite digital audio radio service (SDARS) receiver adapted to receive signals in accordance with advantageous frequency plan
US6510317B1 (en) * 1999-11-04 2003-01-21 Xm Satellite Radio, Inc. Satellite digital audio radio service tuner architecture for reception of satellite and terrestrial signals

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RU2002125909A (en) 2004-02-20
RU2276464C2 (en) 2006-05-10
HK1054472A1 (en) 2003-11-28
CN1426640A (en) 2003-06-25
WO2001065749A1 (en) 2001-09-07
EP1266470A1 (en) 2002-12-18
TW545006B (en) 2003-08-01
AR031095A1 (en) 2003-09-10
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EP1266470A4 (en) 2005-01-12
EG22781A (en) 2003-08-31

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