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AR049928A1 - Metodos y aparatos para la transmision de ondas piloto en un sistema de comunicacion inalambrico - Google Patents

Metodos y aparatos para la transmision de ondas piloto en un sistema de comunicacion inalambrico

Info

Publication number
AR049928A1
AR049928A1 ARP050102530A ARP050102530A AR049928A1 AR 049928 A1 AR049928 A1 AR 049928A1 AR P050102530 A ARP050102530 A AR P050102530A AR P050102530 A ARP050102530 A AR P050102530A AR 049928 A1 AR049928 A1 AR 049928A1
Authority
AR
Argentina
Prior art keywords
pilot
tdm
wave
sequence
signal
Prior art date
Application number
ARP050102530A
Other languages
English (en)
Inventor
Aamod Khandekar
Avneesh Agrawal
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 AR049928A1 publication Critical patent/AR049928A1/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
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7073—Synchronisation aspects
    • H04B1/7075—Synchronisation aspects with code phase acquisition
    • H04B1/7077—Multi-step acquisition, e.g. multi-dwell, coarse-fine or validation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J1/00—Frequency-division multiplex systems
    • H04J1/02—Details
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/06—Synchronising arrangements
    • H04J3/0602—Systems characterised by the synchronising information used
    • H04J3/0605—Special codes used as synchronising signal
    • H04J3/0611—PN codes
    • 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
    • H04L27/261—Details of reference signals
    • H04L27/2613—Structure of the reference signals
    • 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
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2662—Symbol synchronisation
    • 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
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2668—Details of algorithms
    • H04L27/2673—Details of algorithms characterised by synchronisation parameters
    • H04L27/2675—Pilot or known symbols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2201/00—Indexing scheme relating to details of transmission systems not covered by a single group of H04B3/00 - H04B13/00
    • H04B2201/69—Orthogonal indexing scheme relating to spread spectrum techniques in general
    • H04B2201/707—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation
    • H04B2201/70701—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation featuring pilot assisted reception
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2201/00—Indexing scheme relating to details of transmission systems not covered by a single group of H04B3/00 - H04B13/00
    • H04B2201/69—Orthogonal indexing scheme relating to spread spectrum techniques in general
    • H04B2201/707—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation
    • H04B2201/70702—Intercell-related aspects
    • 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
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03828—Arrangements for spectral shaping; Arrangements for providing signals with specified spectral properties
    • H04L25/03866—Arrangements for spectral shaping; Arrangements for providing signals with specified spectral properties using scrambling
    • 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
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2657—Carrier synchronisation
    • 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
    • H04L5/0026—Division using four or more dimensions, e.g. beam steering or quasi-co-location [QCL]

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Time-Division Multiplex Systems (AREA)

Abstract

Cada estacion base transmite una onda piloto TDM 1 que presenta multiples instancias de una secuencia de ondas piloto-1 generada con una secuencia PN1 y una onda piloto TDM 2 que presenta al menos una instancia de una secuencia de ondas piloto-2 generada con una secuencia PN2. A cada estacion base se le asigna una secuencia PN2 específica que identifica de manera unica esa estacion base. Una terminal utiliza la onda piloto TDM 1 para detectar la presencia de una senal y utiliza la onda piloto TDM 2 para identificar estaciones base y obtener un tiempo preciso. Para la deteccion de senales, la terminal realiza una correlacion retardada sobre muestras recibidas y determina si una senal se encuentra presente. En caso de detectarse una senal, la terminal realiza una correlacion directa sobre las muestras recibidas con secuencias PN1 para K1 diferentes variaciones de tiempo e identifica las instancias de ondas piloto K2 más fuertes TDM 1. Para una sincronizacion temporal, la terminal realiza una correlacion directa sobre las muestras recibidas con secuencias PN2 para detectar las ondas piloto TDM 2.
ARP050102530A 2004-06-18 2005-06-21 Metodos y aparatos para la transmision de ondas piloto en un sistema de comunicacion inalambrico AR049928A1 (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US58080904P 2004-06-18 2004-06-18
US11/022,519 US8068530B2 (en) 2004-06-18 2004-12-22 Signal acquisition in a wireless communication system

Publications (1)

Publication Number Publication Date
AR049928A1 true AR049928A1 (es) 2006-09-13

Family

ID=34972866

Family Applications (1)

Application Number Title Priority Date Filing Date
ARP050102530A AR049928A1 (es) 2004-06-18 2005-06-21 Metodos y aparatos para la transmision de ondas piloto en un sistema de comunicacion inalambrico

Country Status (17)

Country Link
US (2) US8027372B2 (es)
EP (4) EP2247058B1 (es)
JP (3) JP4763692B2 (es)
KR (2) KR100899316B1 (es)
AR (1) AR049928A1 (es)
AU (2) AU2005264973A1 (es)
BR (1) BRPI0512123B1 (es)
CA (2) CA2570748C (es)
DK (2) DK2247056T3 (es)
ES (3) ES2390887T3 (es)
IL (2) IL179984A (es)
MX (1) MXPA06014845A (es)
MY (1) MY162221A (es)
PL (2) PL2247056T3 (es)
PT (2) PT2247056E (es)
RU (2) RU2395170C2 (es)
WO (1) WO2006009711A2 (es)

Families Citing this family (100)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9130810B2 (en) 2000-09-13 2015-09-08 Qualcomm Incorporated OFDM communications methods and apparatus
US7295509B2 (en) 2000-09-13 2007-11-13 Qualcomm, Incorporated Signaling method in an OFDM multiple access system
US7042857B2 (en) 2002-10-29 2006-05-09 Qualcom, Incorporated Uplink pilot and signaling transmission in wireless communication systems
US7177297B2 (en) * 2003-05-12 2007-02-13 Qualcomm Incorporated Fast frequency hopping with a code division multiplexed pilot in an OFDMA system
US8724447B2 (en) * 2004-01-28 2014-05-13 Qualcomm Incorporated Timing estimation in an OFDM receiver
US8611283B2 (en) 2004-01-28 2013-12-17 Qualcomm Incorporated Method and apparatus of using a single channel to provide acknowledgement and assignment messages
US8433005B2 (en) 2004-01-28 2013-04-30 Qualcomm Incorporated Frame synchronization and initial symbol timing acquisition system and method
US20050163263A1 (en) * 2004-01-28 2005-07-28 Gupta Alok K. Systems and methods for frequency acquisition in a wireless communication network
KR100929091B1 (ko) * 2004-02-14 2009-11-30 삼성전자주식회사 이동통신 시스템에서 제어 정보 전송 장치 및 방법
US7327714B2 (en) * 2004-06-02 2008-02-05 Samsung Electronics Co., Ltd. Apparatus and method for detecting a time division multiplexing frame in a mobile communication system
US7724777B2 (en) * 2004-06-18 2010-05-25 Qualcomm Incorporated Quasi-orthogonal multiplexing for a multi-carrier communication system
US8027372B2 (en) * 2004-06-18 2011-09-27 Qualcomm Incorporated Signal acquisition in a wireless communication system
US9137822B2 (en) 2004-07-21 2015-09-15 Qualcomm Incorporated Efficient signaling over access channel
US9148256B2 (en) 2004-07-21 2015-09-29 Qualcomm Incorporated Performance based rank prediction for MIMO design
US8891349B2 (en) 2004-07-23 2014-11-18 Qualcomm Incorporated Method of optimizing portions of a frame
EP2512058A1 (en) * 2004-07-29 2012-10-17 Qualcomm Incorporated Method and apparatus for frequency diversity
US8391410B2 (en) 2004-07-29 2013-03-05 Qualcomm Incorporated Methods and apparatus for configuring a pilot symbol in a wireless communication system
US9246728B2 (en) 2004-07-29 2016-01-26 Qualcomm Incorporated System and method for frequency diversity
US20080317142A1 (en) * 2005-07-29 2008-12-25 Qualcomm Incorporated System and method for frequency diversity
US20090190675A1 (en) * 2004-08-31 2009-07-30 Qualcomm Incorporated Synchronization in a broadcast ofdm system using time division multiplexed pilots
US8831115B2 (en) 2004-12-22 2014-09-09 Qualcomm Incorporated MC-CDMA multiplexing in an orthogonal uplink
US8238923B2 (en) 2004-12-22 2012-08-07 Qualcomm Incorporated Method of using shared resources in a communication system
US8135088B2 (en) 2005-03-07 2012-03-13 Q1UALCOMM Incorporated Pilot transmission and channel estimation for a communication system utilizing frequency division multiplexing
US9246560B2 (en) 2005-03-10 2016-01-26 Qualcomm Incorporated Systems and methods for beamforming and rate control in a multi-input multi-output communication systems
US9154211B2 (en) 2005-03-11 2015-10-06 Qualcomm Incorporated Systems and methods for beamforming feedback in multi antenna communication systems
US8446892B2 (en) 2005-03-16 2013-05-21 Qualcomm Incorporated Channel structures for a quasi-orthogonal multiple-access communication system
US9520972B2 (en) 2005-03-17 2016-12-13 Qualcomm Incorporated Pilot signal transmission for an orthogonal frequency division wireless communication system
US9461859B2 (en) 2005-03-17 2016-10-04 Qualcomm Incorporated Pilot signal transmission for an orthogonal frequency division wireless communication system
US9143305B2 (en) 2005-03-17 2015-09-22 Qualcomm Incorporated Pilot signal transmission for an orthogonal frequency division wireless communication system
US9184870B2 (en) 2005-04-01 2015-11-10 Qualcomm Incorporated Systems and methods for control channel signaling
US9036538B2 (en) 2005-04-19 2015-05-19 Qualcomm Incorporated Frequency hopping design for single carrier FDMA systems
US9408220B2 (en) 2005-04-19 2016-08-02 Qualcomm Incorporated Channel quality reporting for adaptive sectorization
US8599957B2 (en) * 2005-05-13 2013-12-03 Ems Technologies, Inc. Method and system for communicating information in a digital signal
US8879511B2 (en) 2005-10-27 2014-11-04 Qualcomm Incorporated Assignment acknowledgement for a wireless communication system
US8611284B2 (en) 2005-05-31 2013-12-17 Qualcomm Incorporated Use of supplemental assignments to decrement resources
US8565194B2 (en) 2005-10-27 2013-10-22 Qualcomm Incorporated Puncturing signaling channel for a wireless communication system
US8462859B2 (en) 2005-06-01 2013-06-11 Qualcomm Incorporated Sphere decoding apparatus
US9179319B2 (en) 2005-06-16 2015-11-03 Qualcomm Incorporated Adaptive sectorization in cellular systems
US8599945B2 (en) 2005-06-16 2013-12-03 Qualcomm Incorporated Robust rank prediction for a MIMO system
US9391751B2 (en) * 2005-07-29 2016-07-12 Qualcomm Incorporated System and method for frequency diversity
US9042212B2 (en) * 2005-07-29 2015-05-26 Qualcomm Incorporated Method and apparatus for communicating network identifiers in a communication system
US8885628B2 (en) 2005-08-08 2014-11-11 Qualcomm Incorporated Code division multiplexing in a single-carrier frequency division multiple access system
US9209956B2 (en) 2005-08-22 2015-12-08 Qualcomm Incorporated Segment sensitive scheduling
US20070041457A1 (en) 2005-08-22 2007-02-22 Tamer Kadous Method and apparatus for providing antenna diversity in a wireless communication system
US8644292B2 (en) 2005-08-24 2014-02-04 Qualcomm Incorporated Varied transmission time intervals for wireless communication system
US9136974B2 (en) 2005-08-30 2015-09-15 Qualcomm Incorporated Precoding and SDMA support
KR100729726B1 (ko) * 2005-09-14 2007-06-18 한국전자통신연구원 직교 주파수 분할 다중화 방식의 통신 시스템의 타이밍획득 및 반송파 주파수 오차 추정 장치 및 방법
US8942153B2 (en) * 2005-09-30 2015-01-27 Lg Electronics Inc. Method for transmitting and receiving data using a plurality of carriers
US8693405B2 (en) 2005-10-27 2014-04-08 Qualcomm Incorporated SDMA resource management
US9144060B2 (en) 2005-10-27 2015-09-22 Qualcomm Incorporated Resource allocation for shared signaling channels
US9088384B2 (en) * 2005-10-27 2015-07-21 Qualcomm Incorporated Pilot symbol transmission in wireless communication systems
US9225416B2 (en) 2005-10-27 2015-12-29 Qualcomm Incorporated Varied signaling channels for a reverse link in a wireless communication system
US9172453B2 (en) 2005-10-27 2015-10-27 Qualcomm Incorporated Method and apparatus for pre-coding frequency division duplexing system
US8045512B2 (en) 2005-10-27 2011-10-25 Qualcomm Incorporated Scalable frequency band operation in wireless communication systems
US8582509B2 (en) 2005-10-27 2013-11-12 Qualcomm Incorporated Scalable frequency band operation in wireless communication systems
US9210651B2 (en) 2005-10-27 2015-12-08 Qualcomm Incorporated Method and apparatus for bootstraping information in a communication system
US8477684B2 (en) 2005-10-27 2013-07-02 Qualcomm Incorporated Acknowledgement of control messages in a wireless communication system
US9225488B2 (en) 2005-10-27 2015-12-29 Qualcomm Incorporated Shared signaling channel
US8582548B2 (en) 2005-11-18 2013-11-12 Qualcomm Incorporated Frequency division multiple access schemes for wireless communication
US7792225B2 (en) * 2005-11-30 2010-09-07 Qualcomm Incorporated Method and device for reducing cross-correlation false alarms in CDMA and other wireless networks
US8233576B2 (en) * 2005-12-08 2012-07-31 Koninklijke Philips Electronics N.V. System, apparatus, and method for a robust synchronization scheme for digital communication systems
KR100973585B1 (ko) * 2005-12-10 2010-08-02 한국전자통신연구원 Ｍｉｍｏ 이동 통신 시스템에서 타이밍 에러와 주파수오프셋을 추정하는 방법 및 그 장치
US8689025B2 (en) * 2006-02-21 2014-04-01 Qualcomm Incorporated Reduced terminal power consumption via use of active hold state
US8077595B2 (en) 2006-02-21 2011-12-13 Qualcomm Incorporated Flexible time-frequency multiplexing structure for wireless communication
US9461736B2 (en) * 2006-02-21 2016-10-04 Qualcomm Incorporated Method and apparatus for sub-slot packets in wireless communication
DE602007011900D1 (de) * 2006-02-21 2011-02-24 Qualcomm Inc Feedback-kanalauslegung für kommunikationssysteme mit mehreren ein- und ausgängen (mimo)
JP4705162B2 (ja) * 2006-04-06 2011-06-22 株式会社日立製作所 無線通信システム、無線基地局装置及び無線端末装置
US7864884B2 (en) * 2006-04-27 2011-01-04 Nokia Corporation Signal detection in OFDM system
US8045927B2 (en) * 2006-04-27 2011-10-25 Nokia Corporation Signal detection in multicarrier communication system
US8738056B2 (en) * 2006-05-22 2014-05-27 Qualcomm Incorporation Signal acquisition in a wireless communication system
US8929353B2 (en) 2007-05-09 2015-01-06 Qualcomm Incorporated Preamble structure and acquisition for a wireless communication system
CA2651490C (en) * 2006-06-13 2012-01-24 Qualcomm Incorporated Preamble structure and acquisition for a wireless communication system
CN101467413B (zh) * 2006-06-13 2013-08-21 高通股份有限公司 用于在无线通信系统中发送和接收导频的方法和装置
BRPI0603938B1 (pt) * 2006-08-18 2019-10-22 Inst Alberto Luiz Coimbra De Pos Graduacao E Pesquisa De Engenharia Coppe/Ufrj método para formação de comunidades virtuais espotâneas baseadas em interesses comuns utilizando equipamentos de comunicação sem fio
EP2068473B1 (en) * 2006-09-25 2018-09-12 Panasonic Intellectual Property Corporation of America Radio communication device and pilot arrangement method
CN101563853B (zh) * 2006-10-24 2013-07-31 高通股份有限公司 用于无线通信系统的捕获导频
PT2057776T (pt) * 2006-10-24 2019-01-11 Qualcomm Inc Estruturas de trama para sistemas de comunicação sem fios
JP5092350B2 (ja) * 2006-10-26 2012-12-05 富士通株式会社 パイロット信号伝送方法及び移動通信システム
US8068465B2 (en) * 2006-10-31 2011-11-29 Motorola Mobility, Inc. Wireless multicast broadcast service methods and apparatus
US7720185B2 (en) * 2006-11-06 2010-05-18 Qualcomm Incorporated Narrow-band interference canceller
JP2008172541A (ja) * 2007-01-11 2008-07-24 Matsushita Electric Ind Co Ltd 基地局装置、通信端末装置、通信システム及び通信方法
JP5478265B2 (ja) * 2007-03-06 2014-04-23 コーニンクレッカ フィリップス エヌ ヴェ 相関を使用して信号を検出するロバストなセンシング
CN101658009A (zh) * 2007-04-05 2010-02-24 日本电气株式会社 时间基准识别方法
EP2143243B1 (en) * 2007-04-24 2017-08-02 TP Vision Holding B.V. Pilot allocation in single frequency network
US8289946B2 (en) * 2007-08-14 2012-10-16 Qualcomm Incorporated Reference signal generation in a wireless communication system
KR101452551B1 (ko) 2007-09-04 2014-10-21 샤프 가부시키가이샤 기지국 장치, 이동국 장치, 무선 통신 시스템, 파일럿 채널 생성 방법 및 안테나 선택 방법
KR20100070377A (ko) * 2007-10-31 2010-06-25 퀄컴 인코포레이티드 시간 분할 멀티플렉싱된 파일럿을 사용한 브로드캐스트 ｏｆｄｍ 시스템에서의 동기화
US7961816B2 (en) * 2007-11-28 2011-06-14 Industrial Technology Research Institute Device for and method of signal synchronization in a communication system
US8913590B2 (en) * 2007-12-28 2014-12-16 Telecom Italia S.P.A. Management of a hybrid communication network comprising a cellular network and a local network
US8891557B2 (en) * 2008-05-21 2014-11-18 Qualcomm Incorporated Method and apparatus for sending information via selection of resources used for transmission
CN101741538B (zh) * 2008-11-13 2013-01-16 中兴通讯股份有限公司 同步调度方法
GB2465628B (en) * 2008-11-27 2011-03-23 Ipwireless Inc Communication system,communication units,and method for employing a pilot transmission scheme
US8355455B2 (en) * 2009-04-28 2013-01-15 Qualcomm Incorporated Using channel estimates associated with OFDM pilot symbols to estimate additional parameters
US8743977B2 (en) * 2009-06-23 2014-06-03 Intel Corporation Efficient tuning and demodulation techniques
US9071493B2 (en) * 2009-06-29 2015-06-30 Qualcomm Incorporated Dual frequency tracking loop for OFDMA systems
US8565336B2 (en) * 2011-02-08 2013-10-22 Electronics And Telecommunications Research Institute Data transmission apparatus and method, and data reconstitution apparatus and method
KR101470592B1 (ko) * 2011-02-08 2014-12-10 한국전자통신연구원 데이터 변조시 데이터 추가가 가능한 데이터 송신 장치와 방법, 및 데이터 분리 복원 장치와 방법
EP2954650A1 (en) * 2013-02-05 2015-12-16 Interdigital Patent Holdings, Inc. Pulse-shaped orthogonal frequency division multiplexing
US9497569B2 (en) * 2014-03-12 2016-11-15 Uptime Solutions System and method for correlative sampling and compression of quasi-periodic machine parameter sensor data in an industrial facility
CN107689845B (zh) 2016-08-05 2023-07-18 华为技术有限公司 一种传输参考信号的方法、相关设备及通信系统

Family Cites Families (51)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5614914A (en) * 1994-09-06 1997-03-25 Interdigital Technology Corporation Wireless telephone distribution system with time and space diversity transmission for determining receiver location
US5710768A (en) 1994-09-30 1998-01-20 Qualcomm Incorporated Method of searching for a bursty signal
MY120873A (en) 1994-09-30 2005-12-30 Qualcomm Inc Multipath search processor for a spread spectrum multiple access communication system
JPH09284176A (ja) * 1996-04-18 1997-10-31 Mitsubishi Electric Corp スペクトル拡散送信機および受信機
US5781543A (en) * 1996-08-29 1998-07-14 Qualcomm Incorporated Power-efficient acquisition of a CDMA pilot signal
JP3311951B2 (ja) * 1996-12-20 2002-08-05 富士通株式会社 符号多重送信装置
US6137847A (en) * 1997-05-02 2000-10-24 Lsi Logic Corporation Demodulating digital video broadcast signals
KR100263176B1 (ko) 1997-09-18 2000-08-01 윤종용 주파수간 하드 핸드오프를 위한 파일럿 신호 발생 장치 및방법, 이를 이용한 하드 핸드오프 방법
EP1031196B1 (en) 1997-11-10 2007-10-10 QUALCOMM Incorporated Access channel slot sharing
US6044074A (en) * 1997-11-10 2000-03-28 Qualcomm Incorporated Rapid signal acquisition and synchronization for access transmissions
US6539226B1 (en) * 1998-02-16 2003-03-25 Nec Corporation Base station transmission power control system mobile station and base station
JP3028800B2 (ja) * 1998-05-01 2000-04-04 日本電気株式会社 Ｃｄｍａセルラシステム及びｃｄｍａセルラシステムにおける拡散符号検出方法
RU2181529C2 (ru) * 1998-05-13 2002-04-20 Самсунг Электроникс Ко., Лтд. Устройство и способ для подвижной станции для приема сигналов, переданных от базовой станции
KR100277058B1 (ko) 1998-06-15 2001-01-15 윤종용 이동통신시스템에서주파수간하드핸드오프의시점결정방법및하드핸드오프환경설정방법
KR100277761B1 (ko) * 1998-06-25 2001-01-15 윤종용 셀룰러 시스템에서 이동 단말기의 탐색 범위설정 방법
JP3427971B2 (ja) * 1998-08-24 2003-07-22 ソニー株式会社 通信制御方法
RU2145152C1 (ru) 1998-10-08 2000-01-27 Гармонов Александр Васильевич Способ ортогональной разнесенной передачи-приема сигнала в сотовой системе радиосвязи с кодовым разделением каналов
JP2000165950A (ja) * 1998-11-30 2000-06-16 Sony Corp パイロット信号検出方法および無線通信端末装置
EP1166584B1 (en) 1999-03-24 2011-07-13 Qualcomm Incorporated Reservation multiple access
KR100290678B1 (ko) 1999-04-24 2001-05-15 윤종용 씨디엠에이 이동통신시스템의 셀탐색 장치 및 방법
US6556551B1 (en) 1999-05-27 2003-04-29 Lgc Wireless, Inc. Multi-frequency pilot beacon for CDMA systems
US6907020B2 (en) * 2000-01-20 2005-06-14 Nortel Networks Limited Frame structures supporting voice or streaming communications with high speed data communications in wireless access networks
US7120133B1 (en) 2000-11-03 2006-10-10 Cisco Technology, Inc. System and method of linking a wireless signaling protocol with a media gateway control protocol in a packet-based network
US20020090901A1 (en) * 2000-11-03 2002-07-11 3M Innovative Properties Company Flexible abrasive product and method of making and using the same
US7120134B2 (en) * 2001-02-15 2006-10-10 Qualcomm, Incorporated Reverse link channel architecture for a wireless communication system
US6940827B2 (en) * 2001-03-09 2005-09-06 Adaptix, Inc. Communication system using OFDM for one direction and DSSS for another direction
US6888805B2 (en) 2001-03-23 2005-05-03 Qualcomm Incorporated Time multiplexed transmission scheme for a spread spectrum communication system
US7031754B2 (en) 2001-06-11 2006-04-18 Kathrein-Werke Kg Shapable antenna beams for cellular networks
US6757520B2 (en) 2001-06-26 2004-06-29 Qualcomm Incorporated Method and apparatus for selecting a serving sector in a data communication system
US6795489B2 (en) 2001-08-09 2004-09-21 Qualcomm Inc. Acquisition of a gated pilot
US6689218B2 (en) 2001-10-23 2004-02-10 General Electric Company Systems for the deposition and curing of coating compositions
WO2004086706A1 (en) 2003-03-27 2004-10-07 Docomo Communications Laboratories Europe Gmbh Apparatus and method for estimating a plurality of channels
JP4314573B2 (ja) 2003-07-30 2009-08-19 株式会社デンソー 多気筒内燃機関の気筒別空燃比算出装置
US20050063298A1 (en) 2003-09-02 2005-03-24 Qualcomm Incorporated Synchronization in a broadcast OFDM system using time division multiplexed pilots
US7929487B2 (en) * 2004-01-16 2011-04-19 Alcatel-Lucent Usa Inc. Method and apparatus for cellular communication over data networks
US8433005B2 (en) 2004-01-28 2013-04-30 Qualcomm Incorporated Frame synchronization and initial symbol timing acquisition system and method
EP1712052A1 (en) 2004-01-28 2006-10-18 Qualcomm, Incorporated Systems and methods for frequency acquisition in a wireless communication network
US7197692B2 (en) * 2004-06-18 2007-03-27 Qualcomm Incorporated Robust erasure detection and erasure-rate-based closed loop power control
US8027372B2 (en) 2004-06-18 2011-09-27 Qualcomm Incorporated Signal acquisition in a wireless communication system
US8452316B2 (en) * 2004-06-18 2013-05-28 Qualcomm Incorporated Power control for a wireless communication system utilizing orthogonal multiplexing
US7724777B2 (en) * 2004-06-18 2010-05-25 Qualcomm Incorporated Quasi-orthogonal multiplexing for a multi-carrier communication system
WO2006000091A1 (en) 2004-06-24 2006-01-05 Nortel Networks Limited Preambles in ofdma system
US7583586B2 (en) 2004-07-02 2009-09-01 Samsung Electronics Co., Ltd Apparatus and method for transmitting/receiving pilot signal in communication system using OFDM scheme
EP2512058A1 (en) * 2004-07-29 2012-10-17 Qualcomm Incorporated Method and apparatus for frequency diversity
KR100996028B1 (ko) 2004-09-07 2010-11-22 학교법인연세대학교 다중 입력 다중 출력 방식을 사용하는 무선 통신시스템에서 채널 추정 방법
US7292856B2 (en) * 2004-12-22 2007-11-06 Qualcomm Incorporated Methods and apparatus for flexible forward-link and reverse-link handoffs
JP4528193B2 (ja) 2004-12-24 2010-08-18 富士通株式会社 誤り訂正復号方法、通信装置、及び、デジタル伝送システム
US7751374B2 (en) 2005-01-18 2010-07-06 Marvell World Trade Ltd. WLAN TDM protocol
US8145251B2 (en) 2006-01-23 2012-03-27 Motorola Mobility, Inc. Power control in schedulable wireless communication terminal
US7701919B2 (en) 2006-05-01 2010-04-20 Alcatel-Lucent Usa Inc. Method of assigning uplink reference signals, and transmitter and receiver thereof
US8738056B2 (en) 2006-05-22 2014-05-27 Qualcomm Incorporation Signal acquisition in a wireless communication system

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