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AR054135A1 - Transmision de datos y de piloto en un sistema de acceso multiple por division de frecuencia cuasi-ortogonal de una sola portadora - Google Patents

Transmision de datos y de piloto en un sistema de acceso multiple por division de frecuencia cuasi-ortogonal de una sola portadora

Info

Publication number
AR054135A1
AR054135A1 ARP060102584A ARP060102584A AR054135A1 AR 054135 A1 AR054135 A1 AR 054135A1 AR P060102584 A ARP060102584 A AR P060102584A AR P060102584 A ARP060102584 A AR P060102584A AR 054135 A1 AR054135 A1 AR 054135A1
Authority
AR
Argentina
Prior art keywords
transmitters
receiver
frequency division
division multiplexing
pilots
Prior art date
Application number
ARP060102584A
Other languages
English (en)
Inventor
Ravi Palanki
Aamond Khandekar
Arak Sutivong
Original Assignee
Qualcomm 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 Qualcomm Inc filed Critical Qualcomm Inc
Publication of AR054135A1 publication Critical patent/AR054135A1/es

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2643—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using time-division multiple access [TDMA]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • H04L1/1819—Hybrid protocols; Hybrid automatic repeat request [HARQ] with retransmission of additional or different redundancy
    • 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
    • H04L25/0204—Channel estimation of multiple channels
    • 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
    • H04L25/0226—Channel estimation using sounding signals sounding signals per se
    • 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
    • H04L25/0258—Channel estimation using zero-forcing criteria
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space
    • 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
    • H04L25/022—Channel estimation of frequency 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
    • H04L25/024—Channel estimation channel estimation algorithms
    • H04L25/0256—Channel estimation using minimum mean square error criteria

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Power Engineering (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radio Transmission System (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Time-Division Multiplex Systems (AREA)

Abstract

En un sistema de acceso multiple de division de frecuencia de una sola portadora (SC-FDMA) que utiliza FDMA intercalado (IFDMA) o FDMA localizado multiples transmisores pueden transmitir sus pilotos utilizando multiplexion por division de tiempo (TDM), multiplexion por division de codigo (CDM) multiplexion por division de frecuencia intercalada (IFDM), multiplexion por division de frecuencia localizada (LFDM). Los pilots de estos transmisores son entonces ortogonales uno a otro. Un receptor realiza la demultiplexion complementarias para los pilotos enviados por los transmisores. El receptor puede derivar una estimacion del canal para cada transmisor utilizando una técnica MMSE o una técnica de mínimos cuadrados. El receptor puede recibir transmisiones de datos superpuestos enviados sobre el mismo bloque de tiempo-frecuencia por los multiples transmisores y puede llevar a cabo el procesamiento especial de receptor con matrices de filtro espaciales para separar estas transmisiones de datos. El receptor puede derivar los matrices de filtro espacial en base a las estimaciones del canal para los trasmisores y utilizando zero-forcing, MMSE o la técnica de combinacion por máxima relacion.
ARP060102584A 2005-06-16 2006-06-16 Transmision de datos y de piloto en un sistema de acceso multiple por division de frecuencia cuasi-ortogonal de una sola portadora AR054135A1 (es)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US69170105P 2005-06-16 2005-06-16
US70203305P 2005-07-22 2005-07-22
US71036605P 2005-08-22 2005-08-22
US11/242,115 US8730877B2 (en) 2005-06-16 2005-09-30 Pilot and data transmission in a quasi-orthogonal single-carrier frequency division multiple access system

Publications (1)

Publication Number Publication Date
AR054135A1 true AR054135A1 (es) 2007-06-06

Family

ID=37054750

Family Applications (1)

Application Number Title Priority Date Filing Date
ARP060102584A AR054135A1 (es) 2005-06-16 2006-06-16 Transmision de datos y de piloto en un sistema de acceso multiple por division de frecuencia cuasi-ortogonal de una sola portadora

Country Status (15)

Country Link
US (1) US8730877B2 (es)
EP (2) EP2252027A1 (es)
JP (4) JP4723640B2 (es)
KR (2) KR100947799B1 (es)
CN (1) CN101243667B (es)
AR (1) AR054135A1 (es)
AU (2) AU2006259598A1 (es)
BR (1) BRPI0611789A2 (es)
CA (1) CA2612361C (es)
IL (1) IL188125A (es)
MX (1) MX2007016006A (es)
MY (1) MY143641A (es)
SG (1) SG165376A1 (es)
TW (2) TWI451729B (es)
WO (1) WO2006138206A1 (es)

Families Citing this family (145)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8599764B2 (en) 2003-09-02 2013-12-03 Qualcomm Incorporated Transmission of overhead information for reception of multiple data streams
US7221680B2 (en) 2003-09-02 2007-05-22 Qualcomm Incorporated Multiplexing and transmission of multiple data streams in a wireless multi-carrier communication system
US8477809B2 (en) 2003-09-02 2013-07-02 Qualcomm Incorporated Systems and methods for generalized slot-to-interlace mapping
US8509051B2 (en) 2003-09-02 2013-08-13 Qualcomm Incorporated Multiplexing and transmission of multiple data streams in a wireless multi-carrier communication system
US8526412B2 (en) 2003-10-24 2013-09-03 Qualcomm Incorporated Frequency division multiplexing of multiple data streams in a wireless multi-carrier communication system
US8885628B2 (en) 2005-08-08 2014-11-11 Qualcomm Incorporated Code division multiplexing in a single-carrier frequency division multiple access system
US8331216B2 (en) * 2005-08-09 2012-12-11 Qualcomm Incorporated Channel and interference estimation in single-carrier and multi-carrier frequency division multiple access systems
EP2858264B1 (en) * 2005-09-30 2019-12-18 Apple Inc. MIMO communication system
KR101306696B1 (ko) 2005-11-10 2013-09-10 엘지전자 주식회사 다수의 반송파를 이용하여 데이터를 전송하는 장치 및 방법
KR100871259B1 (ko) * 2006-01-02 2008-11-28 삼성전자주식회사 통신 시스템에서 신호 수신 장치 및 방법
ATE479241T1 (de) * 2006-01-18 2010-09-15 Huawei Tech Co Ltd Verfahren zur verbesserten synchronisation und informationsübertragung in einem kommunikationssystem
TWI488454B (zh) * 2006-01-20 2015-06-11 Qualcomm Inc 無線通信系統中用於引導多工之方法及裝置
US8130857B2 (en) * 2006-01-20 2012-03-06 Qualcomm Incorporated Method and apparatus for pilot multiplexing in a wireless communication system
KR100913089B1 (ko) 2006-02-07 2009-08-21 엘지전자 주식회사 다중 반송파 시스템에 적용되는 파일럿 신호 전송 방법
US20070201569A1 (en) * 2006-02-08 2007-08-30 Nokia Corporation Apparatus, method and computer program product providing joint detection for increasing throughout with data in uplink that multiplexes users using codes and that multiplexes users using frequency multiplexing
GB2448268B (en) * 2006-02-13 2011-01-12 Ericsson Telefon Ab L M Method and Arrangement in a Telecommunication System
US8320950B2 (en) * 2006-06-09 2012-11-27 Alcatel Lucent Method for increasing synchronous control channel capacity in a wireless system
US8363606B2 (en) 2006-09-05 2013-01-29 Qualcomm Incorporated Method and apparatus for data and control multiplexing
US8265177B2 (en) * 2006-12-04 2012-09-11 Samsung Electronics Co., Ltd. System and method for wireless communication of uncompressed high definition video data using beambook-constructed beamforming signals
US8259836B2 (en) * 2006-12-04 2012-09-04 Samsung Electronics Co., Ltd. Method and system for generating candidate beamforming coefficients for transmission of data over a wireless medium
US7983366B2 (en) * 2006-12-05 2011-07-19 Intel Corporation Transmission signaling techniques to enhance receiver interference mitigation performance
US8085873B2 (en) 2007-01-02 2011-12-27 Qualcomm, Incorporated Systems and methods for enhanced channel estimation in wireless communication systems
CN104065443B (zh) * 2007-01-05 2017-05-10 三星电子株式会社 单载波频分多址系统中发送和接收控制信息的方法和装置
US9072095B2 (en) 2007-01-09 2015-06-30 Samsung Electronics Co., Ltd. Apparatus and method for allocating resources in a single carrier-frequency division multiple access system
KR20080065518A (ko) * 2007-01-09 2008-07-14 삼성전자주식회사 단일 캐리어 주파수 분할 다중 접속 방식시스템에서 주파수호핑 방법 및 장치
CN101584177B (zh) * 2007-01-16 2014-04-09 皇家飞利浦电子股份有限公司 用于高速通信的改进的频率估计的系统和方法
GB2446197A (en) 2007-02-05 2008-08-06 Nec Corp Frequency-hopping method and mobile communication system
EP2137917A2 (en) * 2007-03-21 2009-12-30 Interdigital Technology Corporation Mimo wireless communication method and apparatus for transmitting and decoding resource block structures based on a dedicated reference signal mode
US8787499B2 (en) 2007-03-27 2014-07-22 Qualcomm Incorporated Channel estimation with effective co-channel interference suppression
US8369299B2 (en) * 2007-05-07 2013-02-05 Qualcomm Incorporated Method and apparatus for multiplexing CDM pilot and FDM data
US8750917B2 (en) * 2007-05-18 2014-06-10 Qualcomm Incorporated Multiplexing and power control of uplink control channels in a wireless communication system
US20080294709A1 (en) * 2007-05-23 2008-11-27 Sathe Rahul P Processing geometric data using spectral analysis
US8331328B2 (en) 2007-06-08 2012-12-11 Samsung Electronic Co., Ltd Control and data signaling in SC-FDMA communication systems
US8467367B2 (en) * 2007-08-06 2013-06-18 Qualcomm Incorporated Multiplexing and transmission of traffic data and control information in a wireless communication system
TWI387236B (zh) * 2007-08-31 2013-02-21 Univ Yuan Ze 一種採用循環位移正交鍵之多載波展頻映射裝置、發射機、接收機，及其通訊系統
TWI350457B (en) * 2007-09-19 2011-10-11 Htc Corp Data transmission method and system
US8780825B2 (en) * 2008-03-05 2014-07-15 Sharp Kabushiki Kaisha Communication system, communication device and communication method that can improve frequency use efficiency
WO2009114478A1 (en) 2008-03-10 2009-09-17 Wi-Lan Inc. Efficient and consistent wireless downlink channel configuration
WO2009142444A2 (ko) * 2008-05-22 2009-11-26 엘지전자주식회사 무선 통신 시스템에서 데이터 전송 방법
KR101411688B1 (ko) * 2008-05-22 2014-07-01 엘지전자 주식회사 무선 통신 시스템에서 데이터 전송 방법
WO2010006469A1 (zh) * 2008-07-18 2010-01-21 上海贝尔阿尔卡特股份有限公司 在sc-fdma系统中对多路信号进行交换处理的方法和装置
KR101513044B1 (ko) 2008-08-05 2015-04-17 엘지전자 주식회사 Ｐａｐｒ을 줄이기 위한 무선 접속 방식
KR101597573B1 (ko) * 2008-08-11 2016-02-25 엘지전자 주식회사 제어정보의 상향링크 전송 방법
KR101603338B1 (ko) 2008-08-11 2016-03-15 엘지전자 주식회사 무선 통신 시스템에서 정보 전송 방법 및 장치
KR101571566B1 (ko) 2008-08-11 2015-11-25 엘지전자 주식회사 무선 통신 시스템에서 제어신호 전송 방법
KR20100019947A (ko) 2008-08-11 2010-02-19 엘지전자 주식회사 무선 통신 시스템에서 정보 전송 방법
US8089858B2 (en) 2008-08-14 2012-01-03 Sony Corporation Frame and signalling pattern structure for multi-carrier systems
US8619920B2 (en) * 2008-11-05 2013-12-31 Ntt Docomo, Inc. Two-dimensional code spreading for interleaved FDMA system
DE112009002687T5 (de) 2008-11-07 2013-03-21 Sumitomo Electric Industries, Ltd. Kommunikationsvorrichtung
EP2357735B1 (en) 2008-11-14 2016-11-09 LG Electronics Inc. Method and apparatus for information transmission in wireless communication system
WO2010056068A2 (ko) 2008-11-14 2010-05-20 엘지전자주식회사 무선 통신 시스템에서 신호 전송 방법 및 장치
GB2465628B (en) 2008-11-27 2011-03-23 Ipwireless Inc Communication system,communication units,and method for employing a pilot transmission scheme
US8787186B2 (en) 2008-12-12 2014-07-22 Blackberry Limited Mobility in a distributed antenna system
US20100290395A1 (en) * 2009-04-15 2010-11-18 Research In Motion Ltd Sensor-based wireless communication systems using compressive sampling
US8290462B2 (en) 2009-02-04 2012-10-16 Agere Systems Llc Receiver and method for estimating a plurality of estimated transfer functions corresponding to wireless channels in a multiple-input system
KR20100091876A (ko) 2009-02-11 2010-08-19 엘지전자 주식회사 다중안테나 전송을 위한 단말 동작
US8422541B2 (en) * 2009-05-29 2013-04-16 Alcatel Lucent Channel estimation in a multi-channel communication system using pilot signals having quasi-orthogonal subpilots
KR101551982B1 (ko) * 2009-06-19 2015-09-10 삼성전자주식회사 단일 반송파-주파수 분할 다중 통신 시스템에서 신호 송수신 장치 및 방법
WO2011009157A1 (en) * 2009-07-20 2011-01-27 Commonwealth Scientific And Industrial Research Organisation Wireless data communications
US20110080526A1 (en) * 2009-10-01 2011-04-07 Legend Silicon Corp. multiple tuner terrestrial dtv receiver for indoor and mobile users
CN102598561B (zh) 2009-10-26 2014-11-26 住友电气工业株式会社 无线通信装置
EP2524434A1 (en) * 2010-01-11 2012-11-21 Research In Motion Limited Sensor-based wireless communication systems using compressed sensing with sparse data
US8948154B2 (en) * 2010-02-10 2015-02-03 Qualcomm Incorporated Method and apparatus for sending and receiving a low-complexity transmission in a wireless communication system
US9461688B2 (en) * 2010-03-12 2016-10-04 Sunrise Micro Devices, Inc. Power efficient communications
KR101783610B1 (ko) * 2010-04-21 2017-10-10 엘지전자 주식회사 무선 통신 시스템에서 제어 정보의 전송 방법 및 장치
US9071286B2 (en) 2011-05-26 2015-06-30 Cohere Technologies, Inc. Modulation and equalization in an orthonormal time-frequency shifting communications system
US10681568B1 (en) 2010-05-28 2020-06-09 Cohere Technologies, Inc. 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
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
US9130638B2 (en) 2011-05-26 2015-09-08 Cohere Technologies, Inc. Modulation and equalization in an orthonormal time-frequency shifting communications system
US9444514B2 (en) 2010-05-28 2016-09-13 Cohere Technologies, Inc. OTFS methods of data channel characterization and uses thereof
US9590779B2 (en) 2011-05-26 2017-03-07 Cohere Technologies, Inc. Modulation and equalization in an orthonormal time-frequency shifting communications system
US9031141B2 (en) 2011-05-26 2015-05-12 Cohere Technologies, Inc. Modulation and equalization in an orthonormal time-frequency shifting communications system
US9294315B2 (en) 2011-05-26 2016-03-22 Cohere Technologies, Inc. Modulation and equalization in an orthonormal time-frequency shifting communications system
EP2832000B8 (en) * 2012-03-26 2020-07-22 Cohere Technologies, Inc. Signal modulation method resistant to echo reflections and frequency offsets
AU2013280487B2 (en) * 2012-06-25 2016-10-13 Cohere Technologies, Inc. Modulation and equalization in an orthonormal time-frequency shifting communications system
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
US9967758B2 (en) 2012-06-25 2018-05-08 Cohere Technologies, Inc. Multiple access in an orthogonal time frequency space communication system
US10411843B2 (en) 2012-06-25 2019-09-10 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
US9912507B2 (en) 2012-06-25 2018-03-06 Cohere Technologies, Inc. Orthogonal time frequency space communication system compatible with OFDM
US10469215B2 (en) 2012-06-25 2019-11-05 Cohere Technologies, Inc. Orthogonal time frequency space modulation system for the Internet of Things
US9369247B2 (en) 2013-03-15 2016-06-14 Blackberry Limited Simultaneously accessing shared resources
WO2014138843A1 (en) 2013-03-15 2014-09-18 Research In Motion Limited Simultaneously accessing shared resources
CN104168241B (zh) * 2013-05-16 2017-10-17 华为技术有限公司 多输入输出正交频分复用通信系统及信号补偿方法
US9723516B2 (en) 2013-05-20 2017-08-01 Qualcomm Incorporated Wireless feedback communications over unlicensed spectrum
US9841075B2 (en) 2013-10-11 2017-12-12 Rousseau Research, Inc. Protective athletic equipment
US9900199B2 (en) 2014-05-06 2018-02-20 Qualcomm Incorporated Systems and methods for improvements to training field design for increased symbol durations
CN105281844A (zh) * 2014-06-30 2016-01-27 中兴通讯股份有限公司 宽带多天线无线信道测量系统及其方法
US11012272B2 (en) * 2015-03-10 2021-05-18 Qualcomm Incorporated Channel or interference estimation for SC-FDM symbol streams
US9780847B2 (en) * 2015-03-27 2017-10-03 Qualcomm Incorporated Channel feedback design for frequency selective channels
US10158394B2 (en) 2015-05-11 2018-12-18 Cohere Technologies, Inc. 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
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
US9866363B2 (en) 2015-06-18 2018-01-09 Cohere Technologies, Inc. System and method for coordinated management of network access points
CN114070701B (zh) 2015-06-27 2024-05-14 凝聚技术股份有限公司 与ofdm兼容的正交时频空间通信系统
US10892547B2 (en) 2015-07-07 2021-01-12 Cohere Technologies, Inc. Inconspicuous multi-directional antenna system configured for multiple polarization modes
WO2017011455A1 (en) 2015-07-12 2017-01-19 Cohere Technologies Orthogonal time frequency space modulation over a plurality of narrow band subcarriers
EP3348015B1 (en) 2015-09-07 2022-09-07 Cohere Technologies, Inc. Multiple access using orthogonal time frequency space modulation
EP3378187B1 (en) 2015-11-18 2022-03-30 Cohere Technologies, Inc. Orthogonal time frequency space modulation techniques
CN108781072B (zh) 2015-12-09 2022-04-26 凝聚技术公司 利用复正交函数的导频封装
WO2017147439A1 (en) 2016-02-25 2017-08-31 Cohere Technologies Reference signal packing for wireless communications
CN109314619B (zh) 2016-03-23 2021-05-25 凝聚技术公司 正交时间频率空间调制信号的接收器侧处理
EP4262162A3 (en) 2016-03-31 2024-01-10 Cohere Technologies, Inc. Channel acquisition using orthogonal time frequency space modulated pilot signal
US9667307B1 (en) 2016-03-31 2017-05-30 Cohere Technologies Wireless telecommunications system for high-mobility applications
EP3437279B1 (en) 2016-04-01 2021-03-03 Cohere Technologies, Inc. Iterative two dimensional equalization of orthogonal time frequency space modulated signals
CN109196812B (zh) 2016-04-01 2021-03-09 科希尔技术股份有限公司 正交时频空间通信系统中的汤姆林森-哈拉希玛预编码方法和装置
US10938602B2 (en) 2016-05-20 2021-03-02 Cohere Technologies, Inc. Iterative channel estimation and equalization with superimposed reference signals
EP3497799A4 (en) 2016-08-12 2020-04-15 Cohere Technologies, Inc. MULTILEVEL ITERATIVE EQUALIZATION AND DECODING
WO2018032016A1 (en) 2016-08-12 2018-02-15 Cohere Technologies Localized equalization for channels with intercarrier interference
EP3497785B1 (en) 2016-08-12 2024-03-13 Cohere Technologies, Inc. Method for multi-user multiplexing of orthogonal time frequency space signals
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
EP3549200B1 (en) 2016-12-05 2022-06-29 Cohere Technologies, Inc. Fixed wireless access using orthogonal time frequency space modulation
WO2018129554A1 (en) 2017-01-09 2018-07-12 Cohere Technologies Pilot scrambling for channel estimation
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
EP3610582A4 (en) 2017-04-11 2021-01-06 Cohere Technologies, Inc. DIGITAL COMMUNICATION USING ORTHOGONALLY MODULATED SIGNALS IN DISPERSED TIME, FREQUENCY AND SPACE
EP4109983A1 (en) 2017-04-21 2022-12-28 Cohere Technologies, Inc. Communication techniques using quasi-static properties of wireless channels
EP3616265A4 (en) 2017-04-24 2021-01-13 Cohere Technologies, Inc. MULTI-HARNESS ANTENNA DESIGNS AND OPERATION
WO2018200577A1 (en) 2017-04-24 2018-11-01 Cohere Technologies Digital communication using lattice division multiplexing
CN111052692B (zh) 2017-07-12 2022-10-11 凝聚技术公司 基于zak变换的数据调制方法
US11546068B2 (en) 2017-08-11 2023-01-03 Cohere Technologies, Inc. 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
WO2019051093A1 (en) 2017-09-06 2019-03-14 Cohere Technologies REDUCTION OF TRELLIS IN TIME, FREQUENCY AND ORTHOGONAL SPATIAL MODULATION
US11283561B2 (en) 2017-09-11 2022-03-22 Cohere Technologies, Inc. Wireless local area networks using orthogonal time frequency space modulation
EP3682607A4 (en) 2017-09-15 2021-09-01 Cohere Technologies, Inc. SYNCHRONIZATION IN AN ORTHOGONAL TIME FREQUENCY SIGNAL RECEIVER
WO2019060596A2 (en) 2017-09-20 2019-03-28 Cohere Technologies, Inc. LOW COST ELECTROMAGNETIC POWER SUPPLY NETWORK
US11152957B2 (en) 2017-09-29 2021-10-19 Cohere Technologies, Inc. Forward error correction using non-binary low density parity check codes
CN111919394B (zh) 2017-11-01 2022-05-27 凝聚技术公司 使用正交时频空分复用的无线系统中的预编码
US11184122B2 (en) 2017-12-04 2021-11-23 Cohere Technologies, Inc. Implementation of orthogonal time frequency space modulation for wireless communications
US11863315B2 (en) 2017-12-04 2024-01-02 Qualcomm Incorporated Techniques and apparatuses for avoiding collisions on an uplink data channel and a cell-specific or UE-specific uplink control channel
EP3750252A4 (en) 2018-02-08 2021-08-11 Cohere Technologies, Inc. CHANNEL ESTIMATE ASPECTS FOR ORTHOGONAL TIME-FREQUENCY SPATIAL MODULATION FOR WIRELESS COMMUNICATIONS
EP3763050A4 (en) 2018-03-08 2021-11-24 Cohere Technologies, Inc. PLANNING MULTI-USER MIMO TRANSMISSIONS IN FIXED WIRELESS COMMUNICATION SYSTEMS
CN110299980B (zh) * 2018-03-23 2022-11-25 中兴通讯股份有限公司 一种传输参考信号的方法、装置和系统
EP4485869A3 (en) 2018-06-13 2025-03-26 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
CN110912625B (zh) * 2018-09-15 2022-05-31 华为技术有限公司 传输信号的方法和通信装置
DE102018218730A1 (de) * 2018-10-31 2020-04-30 Diehl Metering Gmbh Detektion einer Pilotsequenz auf einfachen Rechnern
JP7098083B2 (ja) * 2020-04-07 2022-07-08 三菱電機株式会社 通信システム
US20220158871A1 (en) * 2020-11-19 2022-05-19 Hon Lin Technology Co., Ltd. Method, apparatus, and system for uplink channel estimation in time domain
EP4331193A4 (en) 2021-04-29 2024-10-30 Cohere Technologies, Inc. ULTRA-WIDEBAND SIGNALS USING ORTHOGONAL TIME-FREQUENCY-SPACE MODULATION

Family Cites Families (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5774450A (en) 1995-01-10 1998-06-30 Matsushita Electric Industrial Co., Ltd. Method of transmitting orthogonal frequency division multiplexing signal and receiver thereof
US6396804B2 (en) 1996-05-28 2002-05-28 Qualcomm Incorporated High data rate CDMA wireless communication system
FI105377B (fi) 1997-05-29 2000-07-31 Nokia Mobile Phones Ltd Menetelmä kahden rinnakkaisen kanavan koodijakoiseksi lähettämiseksi sekä menetelmän toteuttava radiolaite
US5867478A (en) * 1997-06-20 1999-02-02 Motorola, Inc. Synchronous coherent orthogonal frequency division multiplexing system, method, software and device
US6389000B1 (en) 1997-09-16 2002-05-14 Qualcomm Incorporated Method and apparatus for transmitting and receiving high speed data in a CDMA communication system using multiple carriers
EP0938208A1 (en) * 1998-02-22 1999-08-25 Sony International (Europe) GmbH Multicarrier transmission, compatible with the existing GSM system
EP0981207A1 (en) * 1998-06-30 2000-02-23 Lucent Technologies Inc. Pilot symbols
US6396817B2 (en) 1998-08-31 2002-05-28 Qualcomm Incorporated Signal splitting method for limiting peak power in a CDMA system
JP4284773B2 (ja) 1999-09-07 2009-06-24 ソニー株式会社 送信装置、受信装置、通信システム、送信方法及び通信方法
US6850481B2 (en) 2000-09-01 2005-02-01 Nortel Networks Limited Channels estimation for multiple input—multiple output, orthogonal frequency division multiplexing (OFDM) system
US6802035B2 (en) 2000-09-19 2004-10-05 Intel Corporation System and method of dynamically optimizing a transmission mode of wirelessly transmitted information
US6947748B2 (en) * 2000-12-15 2005-09-20 Adaptix, Inc. OFDMA with adaptive subcarrier-cluster configuration and selective loading
JP3714910B2 (ja) 2001-02-20 2005-11-09 株式会社エヌ・ティ・ティ・ドコモ ターボ受信方法及びその受信機
JP2003018054A (ja) 2001-07-02 2003-01-17 Ntt Docomo Inc 無線通信方法及びシステム並びに通信装置
US20040241078A1 (en) 2001-10-16 2004-12-02 Mikio Inoue Fuel cell-use carbon fiber woven fabric, electrode element, fuel cell mobile unit, and production method for fuel cell-use carbon fiber woven fabric
US20030125040A1 (en) 2001-11-06 2003-07-03 Walton Jay R. Multiple-access multiple-input multiple-output (MIMO) communication system
US7020110B2 (en) 2002-01-08 2006-03-28 Qualcomm Incorporated Resource allocation for MIMO-OFDM communication systems
JP2004032679A (ja) 2002-02-28 2004-01-29 Matsushita Electric Ind Co Ltd 通信装置及び通信システム
JP2004007279A (ja) 2002-05-31 2004-01-08 Matsushita Electric Ind Co Ltd 無線通信システム、通信端末装置、および基地局装置
KR100906339B1 (ko) * 2002-06-14 2009-07-06 삼성전자주식회사 필드동기의 길이를 가변할 수 있는 단일 반송파 전송 시스템
JP4157443B2 (ja) 2002-07-16 2008-10-01 松下電器産業株式会社 送信方法、送信信号生成方法およびそれを用いた送信装置
US7570626B2 (en) 2002-07-16 2009-08-04 Panasonic Corporation Communication method, transmitting device using the same, and receiving device using the same
US8320301B2 (en) * 2002-10-25 2012-11-27 Qualcomm Incorporated MIMO WLAN system
US8208364B2 (en) 2002-10-25 2012-06-26 Qualcomm Incorporated MIMO system with multiple spatial multiplexing modes
JP3844758B2 (ja) 2002-11-26 2006-11-15 松下電器産業株式会社 通信方法及び送信装置、受信装置
EP1511189B1 (en) 2002-11-26 2017-09-06 Wi-Fi One, LLC Communication method, transmitter apparatus and receiver apparatus
US7280467B2 (en) * 2003-01-07 2007-10-09 Qualcomm Incorporated Pilot transmission schemes for wireless multi-carrier communication systems
EP1443682B1 (en) 2003-01-31 2010-05-26 NTT DoCoMo, Inc. Transmission synchronization
JP4276009B2 (ja) * 2003-02-06 2009-06-10 株式会社エヌ・ティ・ティ・ドコモ 移動局、基地局、無線伝送プログラム、及び無線伝送方法
US7095790B2 (en) * 2003-02-25 2006-08-22 Qualcomm, Incorporated Transmission schemes for multi-antenna communication systems utilizing multi-carrier modulation
US7486735B2 (en) * 2003-02-28 2009-02-03 Nortel Networks Limited Sub-carrier allocation for OFDM
KR100918717B1 (ko) 2003-04-21 2009-09-24 삼성전자주식회사 다입다출력 직교주파수분할다중화 이동통신 시스템에서의신호 시퀀스 추정 방법 및 장치
US7177297B2 (en) * 2003-05-12 2007-02-13 Qualcomm Incorporated Fast frequency hopping with a code division multiplexed pilot in an OFDMA system
US7073378B2 (en) * 2003-08-07 2006-07-11 Schlumberger Technology Corporation Integrated logging tool for borehole
US20050063298A1 (en) * 2003-09-02 2005-03-24 Qualcomm Incorporated Synchronization in a broadcast OFDM system using time division multiplexed pilots
US7242722B2 (en) 2003-10-17 2007-07-10 Motorola, Inc. Method and apparatus for transmission and reception within an OFDM communication system
KR100944821B1 (ko) * 2003-10-24 2010-03-03 콸콤 인코포레이티드 무선 멀티-캐리어 통신 시스템에서 다수의 데이터 스트림들의 주파수 분할 멀티플렉싱
US20050163194A1 (en) 2004-01-28 2005-07-28 Qualcomm Incorporated Interference estimation in a wireless communication system

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