CN101917265A - 多载波码分多址系统中的同步 - Google Patents
多载波码分多址系统中的同步 Download PDFInfo
- Publication number
- CN101917265A CN101917265A CN2010102453826A CN201010245382A CN101917265A CN 101917265 A CN101917265 A CN 101917265A CN 2010102453826 A CN2010102453826 A CN 2010102453826A CN 201010245382 A CN201010245382 A CN 201010245382A CN 101917265 A CN101917265 A CN 101917265A
- Authority
- CN
- China
- Prior art keywords
- sync bit
- antenna
- thin
- ofdm
- transmitting antenna
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 claims abstract description 53
- 238000005070 sampling Methods 0.000 claims abstract description 53
- 238000012549 training Methods 0.000 claims description 48
- 230000001360 synchronised effect Effects 0.000 claims description 26
- 230000005540 biological transmission Effects 0.000 claims description 25
- 239000000284 extract Substances 0.000 claims description 8
- 239000012141 concentrate Substances 0.000 claims description 4
- 238000004891 communication Methods 0.000 abstract description 14
- 108091006146 Channels Proteins 0.000 description 147
- 230000000875 corresponding effect Effects 0.000 description 48
- 238000013461 design Methods 0.000 description 15
- 230000008569 process Effects 0.000 description 13
- 230000001413 cellular effect Effects 0.000 description 11
- 230000002596 correlated effect Effects 0.000 description 10
- 230000006870 function Effects 0.000 description 9
- 238000012545 processing Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 230000014509 gene expression Effects 0.000 description 8
- 230000008859 change Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 230000011664 signaling Effects 0.000 description 6
- 238000005259 measurement Methods 0.000 description 5
- 230000003252 repetitive effect Effects 0.000 description 4
- 230000003044 adaptive effect Effects 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 238000005562 fading Methods 0.000 description 3
- 238000010295 mobile communication Methods 0.000 description 3
- 239000000969 carrier Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009432 framing Methods 0.000 description 2
- 238000013507 mapping Methods 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 230000003595 spectral effect Effects 0.000 description 2
- 101150080339 BTS1 gene Proteins 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000012217 deletion Methods 0.000 description 1
- 230000037430 deletion Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 238000010187 selection method Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/022—Site diversity; Macro-diversity
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0697—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using spatial multiplexing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
- H04J11/0069—Cell search, i.e. determining cell identity [cell-ID]
-
- 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
- H04L27/2602—Signal structure
- H04L27/2605—Symbol extensions, e.g. Zero Tail, Unique Word [UW]
- H04L27/2607—Cyclic extensions
-
- 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
- H04L27/2626—Arrangements specific to the transmitter only
- H04L27/2627—Modulators
-
- 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
- H04L27/2649—Demodulators
- H04L27/265—Fourier transform demodulators, e.g. fast Fourier transform [FFT] or discrete Fourier transform [DFT] demodulators
-
- 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
- H04L27/2663—Coarse synchronisation, e.g. by correlation
-
- 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
- H04L27/2665—Fine synchronisation, e.g. by positioning the FFT window
-
- 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
- H04L27/2669—Details of algorithms characterised by the domain of operation
-
- 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
- H04L27/2669—Details of algorithms characterised by the domain of operation
- H04L27/2672—Frequency domain
-
- 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
- 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
- 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
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L7/00—Arrangements for synchronising receiver with transmitter
- H04L7/0008—Synchronisation information channels, e.g. clock distribution lines
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/08—Reselecting an access point
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/16—Performing reselection for specific purposes
- H04W36/18—Performing reselection for specific purposes for allowing seamless reselection, e.g. soft reselection
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/20—Selecting an access point
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0667—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of delayed versions of same signal
-
- 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
- H04L27/26025—Numerology, i.e. varying one or more of symbol duration, subcarrier spacing, Fourier transform size, sampling rate or down-clocking
-
- 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
- H04L5/0037—Inter-user or inter-terminal allocation
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Databases & Information Systems (AREA)
- Physics & Mathematics (AREA)
- Discrete Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Computer Security & Cryptography (AREA)
- Mobile Radio Communication Systems (AREA)
- Radio Transmission System (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
- Radio Relay Systems (AREA)
- Transmitters (AREA)
Abstract
Description
Claims (15)
Applications Claiming Priority (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US32951401P | 2001-10-17 | 2001-10-17 | |
US32951001P | 2001-10-17 | 2001-10-17 | |
US32950701P | 2001-10-17 | 2001-10-17 | |
US60/329507 | 2001-10-17 | ||
US60/329510 | 2001-10-17 | ||
US60/329514 | 2001-10-17 | ||
US10/038,915 US7548506B2 (en) | 2001-10-17 | 2002-01-08 | System access and synchronization methods for MIMO OFDM communications systems and physical layer packet and preamble design |
US10/038915 | 2002-01-08 |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN028249917A Division CN1736052B (zh) | 2001-10-17 | 2002-10-15 | 多载波码分多址系统中的同步 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN101917265A true CN101917265A (zh) | 2010-12-15 |
CN101917265B CN101917265B (zh) | 2013-04-24 |
Family
ID=27488569
Family Applications (4)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN028249917A Expired - Lifetime CN1736052B (zh) | 2001-10-17 | 2002-10-15 | 多载波码分多址系统中的同步 |
CN2010102453826A Expired - Lifetime CN101917265B (zh) | 2001-10-17 | 2002-10-15 | 多载波码分多址系统中的同步 |
CN2010102453703A Expired - Lifetime CN101917264B (zh) | 2001-10-17 | 2002-10-15 | 多载波码分多址系统中的同步 |
CN2010102453883A Expired - Lifetime CN101917377B (zh) | 2001-10-17 | 2002-10-15 | 多载波码分多址系统中的同步 |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN028249917A Expired - Lifetime CN1736052B (zh) | 2001-10-17 | 2002-10-15 | 多载波码分多址系统中的同步 |
Family Applications After (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN2010102453703A Expired - Lifetime CN101917264B (zh) | 2001-10-17 | 2002-10-15 | 多载波码分多址系统中的同步 |
CN2010102453883A Expired - Lifetime CN101917377B (zh) | 2001-10-17 | 2002-10-15 | 多载波码分多址系统中的同步 |
Country Status (8)
Country | Link |
---|---|
US (13) | US7548506B2 (zh) |
EP (9) | EP2207297A1 (zh) |
JP (6) | JP4276947B2 (zh) |
KR (12) | KR101129968B1 (zh) |
CN (4) | CN1736052B (zh) |
AU (1) | AU2002331503A1 (zh) |
DE (1) | DE60239213D1 (zh) |
WO (1) | WO2003034642A2 (zh) |
Families Citing this family (362)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7020074B1 (en) * | 2000-04-03 | 2006-03-28 | Nortel Networks Limited | Synchronization method and apparatus for frequency division multiplexed telecommunication systems |
US7146636B2 (en) * | 2000-07-24 | 2006-12-05 | Bluesocket, Inc. | Method and system for enabling centralized control of wireless local area networks |
US7295509B2 (en) | 2000-09-13 | 2007-11-13 | Qualcomm, Incorporated | Signaling method in an OFDM multiple access system |
US9130810B2 (en) | 2000-09-13 | 2015-09-08 | Qualcomm Incorporated | OFDM communications methods and apparatus |
US7123662B2 (en) * | 2001-08-15 | 2006-10-17 | Mediatek Inc. | OFDM detection apparatus and method for networking devices |
US7548506B2 (en) * | 2001-10-17 | 2009-06-16 | Nortel Networks Limited | System access and synchronization methods for MIMO OFDM communications systems and physical layer packet and preamble design |
US7248559B2 (en) | 2001-10-17 | 2007-07-24 | Nortel Networks Limited | Scattered pilot pattern and channel estimation method for MIMO-OFDM systems |
JP4606407B2 (ja) * | 2001-11-13 | 2011-01-05 | パナソニック株式会社 | 送信方法及び送信装置 |
JP2009284494A (ja) * | 2001-11-13 | 2009-12-03 | Panasonic Corp | 送信方法、送信装置および受信装置 |
JP3997890B2 (ja) | 2001-11-13 | 2007-10-24 | 松下電器産業株式会社 | 送信方法及び送信装置 |
US7042858B1 (en) * | 2002-03-22 | 2006-05-09 | Jianglei Ma | Soft handoff for OFDM |
AU2003903826A0 (en) * | 2003-07-24 | 2003-08-07 | University Of South Australia | An ofdm receiver structure |
US7327800B2 (en) * | 2002-05-24 | 2008-02-05 | Vecima Networks Inc. | System and method for data detection in wireless communication systems |
KR100548312B1 (ko) * | 2002-06-20 | 2006-02-02 | 엘지전자 주식회사 | 다중 입출력 이동 통신 시스템에서의 신호 처리 방법 |
US7095709B2 (en) * | 2002-06-24 | 2006-08-22 | Qualcomm, Incorporated | Diversity transmission modes for MIMO OFDM communication systems |
US7167507B2 (en) * | 2002-07-01 | 2007-01-23 | Lucent Technologies Inc. | Equalizer and method for performing equalization in a wireless communications system |
BR0215819A (pt) * | 2002-07-31 | 2005-06-07 | Thomson Licensing Sa | Arquitetura de armazenamento temporário centralizado para um receptor de multiplexação por divisão de frequência ortogonal (ofdm) |
US7388845B2 (en) * | 2002-08-26 | 2008-06-17 | Qualcomm Incorporated | Multiple access wireless communications system using a multisector configuration |
US7366200B2 (en) * | 2002-08-26 | 2008-04-29 | Qualcomm Incorporated | Beacon signaling in a wireless system |
US8194770B2 (en) | 2002-08-27 | 2012-06-05 | Qualcomm Incorporated | Coded MIMO systems with selective channel inversion applied per eigenmode |
WO2004021616A1 (ja) * | 2002-08-28 | 2004-03-11 | Fujitsu Limited | 送受信装置及び送受信方法 |
US8208364B2 (en) | 2002-10-25 | 2012-06-26 | Qualcomm Incorporated | MIMO system with multiple spatial multiplexing modes |
US7002900B2 (en) | 2002-10-25 | 2006-02-21 | Qualcomm Incorporated | Transmit diversity processing for a multi-antenna communication system |
US7986742B2 (en) | 2002-10-25 | 2011-07-26 | Qualcomm Incorporated | Pilots for MIMO communication system |
US8170513B2 (en) | 2002-10-25 | 2012-05-01 | Qualcomm Incorporated | Data detection and demodulation for wireless 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 |
US8570988B2 (en) | 2002-10-25 | 2013-10-29 | 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 |
US8169944B2 (en) | 2002-10-25 | 2012-05-01 | Qualcomm Incorporated | Random access for wireless multiple-access communication systems |
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 |
DE60333117D1 (de) * | 2002-11-20 | 2010-08-05 | Ntt Docomo Inc | Kommunikationssystem, Kommunikationsverfahren, Übertragungsvorrichtung, Empfangsvorrichtung und Steuerprogramm |
WO2004051901A1 (en) * | 2002-11-30 | 2004-06-17 | Samsung Electronics Co., Ltd. | Apparatus and method for generating a preamble sequence in an ofdm communication system |
CN1512794A (zh) * | 2002-12-30 | 2004-07-14 | �ʼҷ����ֵ��ӹɷ�����˾ | 一种tdd-cdma系统中用于移动终端的小区搜索方法及装置 |
ES2212744B2 (es) * | 2003-01-10 | 2005-03-16 | Diseño De Sistemas En Silicio, S.A. | Procedimiento de sincronizacion en el dominio del tiempo y de la frecuencia de multiples equipos en un sistema de transmision con modulacion ofdm. |
US20070021130A1 (en) * | 2003-01-29 | 2007-01-25 | Akinori Taira | Multi-carrier radio communication system, transmission device, and reception device |
WO2004082181A1 (ja) * | 2003-03-10 | 2004-09-23 | Matsushita Electric Industrial Co., Ltd. | Ofdm信号の送信方法、送信装置及び受信装置 |
US7327795B2 (en) * | 2003-03-31 | 2008-02-05 | Vecima Networks Inc. | System and method for wireless communication systems |
US8743837B2 (en) * | 2003-04-10 | 2014-06-03 | Qualcomm Incorporated | Modified preamble structure for IEEE 802.11A extensions to allow for coexistence and interoperability between 802.11A devices and higher data rate, MIMO or otherwise extended devices |
FI115683B (fi) * | 2003-04-10 | 2005-06-15 | Elektrobit Oy | Synkronisointimenetelmä ja tiedonsiirtojärjestelmä |
US7916803B2 (en) | 2003-04-10 | 2011-03-29 | Qualcomm Incorporated | Modified preamble structure for IEEE 802.11a extensions to allow for coexistence and interoperability between 802.11a devices and higher data rate, MIMO or otherwise extended devices |
US7133479B2 (en) * | 2003-04-15 | 2006-11-07 | Silicon Integrated Systems Corp. | Frequency synchronization apparatus and method for OFDM systems |
US7606316B1 (en) | 2003-05-14 | 2009-10-20 | Marvell International Ltd. | MIMO-OFDM preamble for channel estimation |
KR100555722B1 (ko) * | 2003-05-20 | 2006-03-03 | 삼성전자주식회사 | 다중 반송파 수신 시스템의 정수배 주파수 옵셋 추정 장치및 그의 정수배 주파수 옵셋 추정방법 |
US8064528B2 (en) | 2003-05-21 | 2011-11-22 | Regents Of The University Of Minnesota | Estimating frequency-offsets and multi-antenna channels in MIMO OFDM systems |
IL156540A0 (en) * | 2003-06-19 | 2004-01-04 | Zion Hada | Ofdma communication system and method |
EP1641179A4 (en) * | 2003-06-27 | 2009-07-29 | Mitsubishi Electric Corp | TRANSMITTER, RECEIVER AND RADIO COMMUNICATION DEVICE |
US9325532B2 (en) | 2003-06-30 | 2016-04-26 | Avago Technologies General Ip (Singapore) Pte. Ltd. | Method and apparatus for communicating symbols in a multiple input multiple output communication system using interleaved subcarriers across a plurality of antennas |
JP4836784B2 (ja) * | 2003-06-30 | 2011-12-14 | アギア システムズ インコーポレーテッド | Fdmに基づくプリアンブル構造を使用する複数アンテナ通信システムにおける後方互換性通信のための方法および装置 |
WO2005006700A1 (en) * | 2003-06-30 | 2005-01-20 | Agere Systems Inc. | Methods and apparatus for backwards compatible communication in a multiple antenna communication system using time orthogonal symbols |
US8014267B2 (en) * | 2003-06-30 | 2011-09-06 | Agere Systems Inc. | Methods and apparatus for backwards compatible communication in a multiple input multiple output communication system with lower order receivers |
DE10331313B3 (de) * | 2003-07-10 | 2005-01-05 | Siemens Ag | Verfahren zur Synchronisation eines in Funkzellen aufgeteilten Funkkommunikationssystems |
US20050063298A1 (en) * | 2003-09-02 | 2005-03-24 | Qualcomm Incorporated | Synchronization in a broadcast OFDM system using time division multiplexed pilots |
JP4829953B2 (ja) * | 2003-09-26 | 2011-12-07 | 日本放送協会 | Ofdm伝送方式におけるキャリアの配置方法 |
US7075906B2 (en) * | 2003-09-30 | 2006-07-11 | Cisco Technology, Inc. | Method and apparatus for cell identification in wireless data networks |
US8233462B2 (en) * | 2003-10-15 | 2012-07-31 | Qualcomm Incorporated | High speed media access control and direct link protocol |
US8284752B2 (en) | 2003-10-15 | 2012-10-09 | Qualcomm Incorporated | Method, apparatus, and system for medium access control |
US8472473B2 (en) | 2003-10-15 | 2013-06-25 | Qualcomm Incorporated | Wireless LAN protocol stack |
US9226308B2 (en) | 2003-10-15 | 2015-12-29 | Qualcomm Incorporated | Method, apparatus, and system for medium access control |
US8462817B2 (en) | 2003-10-15 | 2013-06-11 | Qualcomm Incorporated | Method, apparatus, and system for multiplexing protocol data units |
US8483105B2 (en) | 2003-10-15 | 2013-07-09 | Qualcomm Incorporated | High speed media access control |
KR100969780B1 (ko) * | 2003-10-31 | 2010-07-13 | 삼성전자주식회사 | 직교 주파수 분할 다중 방식 통신 시스템에서 파일럿 신호 송수신 장치 및 방법 |
US7616698B2 (en) * | 2003-11-04 | 2009-11-10 | Atheros Communications, Inc. | Multiple-input multiple output system and method |
US7599348B2 (en) * | 2003-11-04 | 2009-10-06 | Lg Electronics Inc. | Digital E8-VSB reception system and E8-VSB data demultiplexing method |
US7164740B2 (en) * | 2003-11-21 | 2007-01-16 | Interdigital Technology Corporation | Wireless communication apparatus using fast fourier transforms to create, optimize and incorporate a beam space antenna array in an orthogonal frequency division multiplexing receiver |
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 |
US8983467B2 (en) * | 2003-12-09 | 2015-03-17 | Lsi Corporation | Method and apparatus for access point selection using channel correlation in a wireless communication system |
KR100856227B1 (ko) | 2003-12-15 | 2008-09-03 | 삼성전자주식회사 | 이동통신시스템에서의 송/수신장치 및 방법 |
CN101610573B (zh) * | 2003-12-26 | 2011-06-08 | 株式会社东芝 | 无线发送和接收设备及方法 |
JP4212548B2 (ja) | 2003-12-26 | 2009-01-21 | 株式会社東芝 | 無線送信装置、無線受信装置、無線送信方法及び無線受信方法 |
US7649833B2 (en) * | 2003-12-29 | 2010-01-19 | Intel Corporation | Multichannel orthogonal frequency division multiplexed receivers with antenna selection and maximum-ratio combining and associated methods |
US7450489B2 (en) * | 2003-12-30 | 2008-11-11 | Intel Corporation | Multiple-antenna communication systems and methods for communicating in wireless local area networks that include single-antenna communication devices |
US8369790B2 (en) * | 2003-12-30 | 2013-02-05 | Intel Corporation | Communication overhead reduction apparatus, systems, and methods |
CZ2005704A3 (cs) * | 2004-01-20 | 2006-03-15 | Qualcomm Incorporated | Synchronizovaná komunikace tytu broadcast/multicast |
US8194771B2 (en) * | 2004-01-27 | 2012-06-05 | Agere Systems Inc. | Transmission method and apparatus in a multiple antenna communication system |
US8433005B2 (en) | 2004-01-28 | 2013-04-30 | Qualcomm Incorporated | Frame synchronization and initial symbol timing acquisition system and method |
US8724447B2 (en) | 2004-01-28 | 2014-05-13 | Qualcomm Incorporated | Timing estimation in an OFDM receiver |
US8903440B2 (en) | 2004-01-29 | 2014-12-02 | Qualcomm Incorporated | Distributed hierarchical scheduling in an ad hoc network |
EP1712019B1 (en) | 2004-01-29 | 2014-01-15 | Neocific, Inc. | Methods and apparatus for overlaying multi-carrier and direct sequence spread spectrum signals in a broadband wireless communication system |
US8009660B2 (en) | 2004-01-29 | 2011-08-30 | Neocific, Inc. | Methods and apparatus using cell-specific and common pilot subcarriers in multi-carrier, multi-cell wireless communication networks |
US20050169261A1 (en) * | 2004-02-03 | 2005-08-04 | Texas Instruments Incorporated | Method of signaling the length of OFDM WLAN packets |
US7233773B2 (en) * | 2004-02-13 | 2007-06-19 | Broadcom Corporation | Configuring a MIMO communication |
US7701909B2 (en) * | 2004-02-17 | 2010-04-20 | Alcatel-Lucent Usa Inc. | Methods and devices for selecting sets of available sub-channels |
US7304977B2 (en) * | 2004-02-17 | 2007-12-04 | Texas Instruments Incorporated | Implementation for a 5 sample guard interval for multi-band OFDM |
CN100385824C (zh) * | 2004-02-20 | 2008-04-30 | 电子科技大学 | 一种mimo-ofdm系统的自适应信道估计方法 |
CN1898890B (zh) * | 2004-03-11 | 2011-06-15 | 松下电器产业株式会社 | 数据发送方法和数据接收方法 |
US7742533B2 (en) | 2004-03-12 | 2010-06-22 | Kabushiki Kaisha Toshiba | OFDM signal transmission method and apparatus |
KR100606040B1 (ko) * | 2004-03-12 | 2006-07-28 | 삼성전자주식회사 | 다중 안테나를 사용하는 광대역 무선 통신 시스템의 프리앰블 생성 방법 및 장치 |
CN1951050B (zh) * | 2004-03-15 | 2013-10-30 | 苹果公司 | 用于具有四根发射天线的ofdm系统的导频设计 |
US8315271B2 (en) | 2004-03-26 | 2012-11-20 | Qualcomm Incorporated | Method and apparatus for an ad-hoc wireless communications system |
US7983142B2 (en) * | 2004-03-30 | 2011-07-19 | Intel Corporation | Apparatus, systems, and methods for the reception and synchronization of asynchronous signals |
US7161988B2 (en) * | 2004-04-12 | 2007-01-09 | The Directv Group, Inc. | Method and apparatus for minimizing co-channel interference |
CA2562662C (en) * | 2004-04-12 | 2011-11-29 | The Directv Group, Inc. | Physical layer header scrambling in satellite broadcast systems |
US7672285B2 (en) * | 2004-06-28 | 2010-03-02 | Dtvg Licensing, Inc. | Method and apparatus for minimizing co-channel interference by scrambling |
CN100558103C (zh) * | 2004-04-14 | 2009-11-04 | 美国博通公司 | 用于多输入多输出的无线局域网系统的长训练序列 |
WO2006105010A1 (en) | 2005-03-25 | 2006-10-05 | Neocific, Inc. | Methods and apparatus for cellular broadcasting and communication system |
US7257151B2 (en) * | 2004-05-05 | 2007-08-14 | Texas Instruments Incorporated | (Updated) preamble for FDMA |
EP1784930B1 (en) * | 2004-05-04 | 2016-03-23 | Sony Corporation | Training sequence allocations for MIMO transmissions |
US7564814B2 (en) | 2004-05-07 | 2009-07-21 | Qualcomm, Incorporated | Transmission mode and rate selection for a wireless communication system |
US20050265219A1 (en) * | 2004-05-11 | 2005-12-01 | Texas Instruments Incorporated | Orthogonal frequency division multiplex (OFDM) packet detect unit, method of detecting an OFDM packet and OFDM receiver employing the same |
JP2005328312A (ja) * | 2004-05-13 | 2005-11-24 | Ntt Docomo Inc | チャネル推定装置、チャネル推定方法及び無線受信機 |
US7356322B2 (en) * | 2004-05-17 | 2008-04-08 | Agere Systems Inc. | Multiple-branch wireless receiver |
WO2005119922A2 (en) * | 2004-05-27 | 2005-12-15 | Airgo Networks, Inc. | Modified ieee 802.11a for interoperability between 802.11a devices |
US8401018B2 (en) | 2004-06-02 | 2013-03-19 | Qualcomm Incorporated | Method and apparatus for scheduling in a wireless network |
US8582596B2 (en) * | 2004-06-04 | 2013-11-12 | Qualcomm Incorporated | Coding and modulation for broadcast and multicast services in a wireless communication system |
EP1757029A1 (en) * | 2004-06-14 | 2007-02-28 | Samsung Electronics Co., Ltd. | Method for configuring signals corresponding to adaptative packet format of mimo-wlan system |
US20050281316A1 (en) * | 2004-06-21 | 2005-12-22 | Samsung Electronics Co., Ltd. | Method for transmitting/receiving operation mode information in a broadband wireless access communication system |
US8116262B2 (en) | 2004-06-22 | 2012-02-14 | Rockstar Bidco Lp | Methods and systems for enabling feedback in wireless communication networks |
EP2442513A1 (en) * | 2004-06-24 | 2012-04-18 | Nortel Networks Limited | Preambles in OFDMA System |
WO2006000094A1 (en) | 2004-06-24 | 2006-01-05 | Nortel Networks Limited | Efficient location updates, paging and short bursts |
KR100739511B1 (ko) * | 2004-06-25 | 2007-07-13 | 삼성전자주식회사 | 직교 주파수 분할 다중 방식을 사용하는 통신 시스템에서파일럿 신호 송수신 장치 및 방법 |
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 |
US8588326B2 (en) | 2004-07-07 | 2013-11-19 | Apple Inc. | System and method for mapping symbols for MIMO transmission |
US7826344B2 (en) * | 2004-07-07 | 2010-11-02 | Samsung Electronics Co., Ltd | Apparatus and method for transmitting pilot signal in a BWA communication system using transmit antennas |
US9148256B2 (en) | 2004-07-21 | 2015-09-29 | Qualcomm Incorporated | Performance based rank prediction for MIMO design |
US9137822B2 (en) | 2004-07-21 | 2015-09-15 | Qualcomm Incorporated | Efficient signaling over access channel |
US8891349B2 (en) | 2004-07-23 | 2014-11-18 | Qualcomm Incorporated | Method of optimizing portions of a frame |
DE102004038834B4 (de) * | 2004-08-10 | 2006-11-02 | Siemens Ag | Verfahren zum Erzeugen von Präambel- und Signalisierungsstrukturen in einem MIMO-OFDM-Übertragungssystem |
CA2576933C (en) * | 2004-08-16 | 2012-04-24 | Zte San Diego, Inc. | Fast cell search and accurate synchronization in wireless communications |
US7366250B2 (en) | 2004-09-09 | 2008-04-29 | Agere Systems Inc. | Method and apparatus for improved efficiency in an extended multiple antenna communication system |
JP3754441B1 (ja) * | 2004-09-10 | 2006-03-15 | 三洋電機株式会社 | 受信方法ならびに装置およびそれを利用した通信システム |
KR100742128B1 (ko) * | 2004-10-15 | 2007-07-24 | 삼성전자주식회사 | 직교주파수분할다중 방식의 통신시스템에서 상향링크주파수 옵셋 추정 장치 및 방법 |
EP1803314B1 (en) | 2004-10-15 | 2016-03-09 | Apple Inc. | Communication resource allocation systems and methods |
DE202004021844U1 (de) | 2004-11-02 | 2011-08-03 | Lantiq Deutschland Gmbh | Vorrichtung zur paketorientierten Übertragung für ein WLAN |
DE102004052899B4 (de) | 2004-11-02 | 2011-08-18 | Lantiq Deutschland GmbH, 85579 | Sowohl auf sporadische als auch auf kontinuierliche Datenkommunikation ausgerichtetes OFDM-Übertragungsverfahren für ein WLAN |
WO2007032771A1 (en) * | 2004-12-02 | 2007-03-22 | New Jersey Institute Of Technology | Method and/or system for estimating phase error noise |
WO2006063424A1 (en) * | 2004-12-14 | 2006-06-22 | Nortel Networks Limited | Synchronization in a multiple-input/multiple-output (mimo) orthogonal frequency division multiplexing (ofdm) system for wireless applications |
US7852822B2 (en) * | 2004-12-22 | 2010-12-14 | Qualcomm Incorporated | Wide area and local network ID transmission for communication systems |
CN107819719B (zh) * | 2004-12-23 | 2020-12-25 | 韩国电子通信研究院 | 用于发送和接收数据以提供高速数据通信的设备及方法 |
KR100634449B1 (ko) * | 2005-01-03 | 2006-10-16 | 삼성전자주식회사 | 가변 길이의 보호구간을 사용하는 오에프디엠 기반에서의보호구간의 길이 검출 방법 및 그 장치 |
KR100899749B1 (ko) * | 2005-01-13 | 2009-05-27 | 삼성전자주식회사 | 다중 입력 다중 출력 방식을 사용하는 직교 주파수 분할 다중 통신시스템에서 프리앰블 시퀀스 송수신 방법 |
US20060159194A1 (en) * | 2005-01-20 | 2006-07-20 | Texas Instruments Incorporated | Scalable pre-channel estimate phase corrector, method of correction and MIMO communication system employing the corrector and method |
US20060176966A1 (en) * | 2005-02-07 | 2006-08-10 | Stewart Kenneth A | Variable cyclic prefix in mixed-mode wireless communication systems |
EP1851926B1 (en) * | 2005-02-09 | 2015-04-08 | Agere Systems, Inc. | Method and apparatus for preamble training with shortened long training field in a multiple antenna communication system |
US7554952B2 (en) * | 2005-02-09 | 2009-06-30 | Alcatel-Lucent Usa Inc. | Distributed multiple antenna scheduling for wireless packet data communication system using OFDM |
US8045599B2 (en) * | 2005-02-17 | 2011-10-25 | Sony Corporation | Selection of training sequences for multiple-in multiple-out transmissions |
US8811273B2 (en) | 2005-02-22 | 2014-08-19 | Texas Instruments Incorporated | Turbo HSDPA system |
CN100459455C (zh) * | 2005-03-01 | 2009-02-04 | 普天信息技术研究院 | 一种基于智能天线的随机接入检测方法 |
US20060203793A1 (en) * | 2005-03-09 | 2006-09-14 | Lucent Technologies, Inc. | Method for increasing capacity in a wireless communications system |
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 |
US20100185717A9 (en) * | 2005-03-10 | 2010-07-22 | Dhinakar Radhakrishnan | Method of improving control information acquisition latency by transmitting control information in individually decode-able packets |
US20060221810A1 (en) * | 2005-03-10 | 2006-10-05 | Bojan Vrcelj | Fine timing acquisition |
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 |
WO2006135710A2 (en) | 2005-06-09 | 2006-12-21 | Neocific, Inc. | Methods and apparatus for power efficient broadcasting and communication systems |
US8031583B2 (en) * | 2005-03-30 | 2011-10-04 | Motorola Mobility, Inc. | Method and apparatus for reducing round trip latency and overhead within a communication system |
US7693227B2 (en) * | 2005-03-31 | 2010-04-06 | Texas Instruments Incorporated | Channel length estimation and accurate FFT window placement for high-mobility OFDM receivers in single frequency networks |
US9184870B2 (en) | 2005-04-01 | 2015-11-10 | Qualcomm Incorporated | Systems and methods for control channel signaling |
US9408220B2 (en) | 2005-04-19 | 2016-08-02 | Qualcomm Incorporated | Channel quality reporting for adaptive sectorization |
US9036538B2 (en) | 2005-04-19 | 2015-05-19 | Qualcomm Incorporated | Frequency hopping design for single carrier FDMA systems |
US20060245509A1 (en) * | 2005-04-27 | 2006-11-02 | Samsung Electronics Co., Ltd | Method and system for processing MIMO pilot signals in an orthogonal frequency division multiplexing network |
US7466749B2 (en) | 2005-05-12 | 2008-12-16 | Qualcomm Incorporated | Rate selection with margin sharing |
US7684529B2 (en) * | 2005-05-26 | 2010-03-23 | Intel Corporation | Interference rejection in wireless networks |
US8879511B2 (en) | 2005-10-27 | 2014-11-04 | Qualcomm Incorporated | Assignment acknowledgement for a wireless communication system |
US8565194B2 (en) | 2005-10-27 | 2013-10-22 | Qualcomm Incorporated | Puncturing signaling channel for a wireless communication system |
US8611284B2 (en) | 2005-05-31 | 2013-12-17 | Qualcomm Incorporated | Use of supplemental assignments to decrement resources |
US8462859B2 (en) | 2005-06-01 | 2013-06-11 | Qualcomm Incorporated | Sphere decoding apparatus |
JP4869724B2 (ja) * | 2005-06-14 | 2012-02-08 | 株式会社エヌ・ティ・ティ・ドコモ | 送信装置、送信方法、受信装置及び受信方法 |
JP4588548B2 (ja) * | 2005-06-15 | 2010-12-01 | 株式会社エヌ・ティ・ティ・ドコモ | 受信装置及び受信方法 |
US8599945B2 (en) | 2005-06-16 | 2013-12-03 | Qualcomm Incorporated | Robust rank prediction for a MIMO system |
US9179319B2 (en) | 2005-06-16 | 2015-11-03 | Qualcomm Incorporated | Adaptive sectorization in cellular systems |
US8358714B2 (en) | 2005-06-16 | 2013-01-22 | Qualcomm Incorporated | Coding and modulation for multiple data streams in a communication system |
US8670493B2 (en) | 2005-06-22 | 2014-03-11 | Eices Research, Inc. | Systems and/or methods of increased privacy wireless communications |
JP4546342B2 (ja) | 2005-07-07 | 2010-09-15 | パナソニック株式会社 | 送信装置および送信方法 |
US8885628B2 (en) | 2005-08-08 | 2014-11-11 | Qualcomm Incorporated | Code division multiplexing in a single-carrier frequency division multiple access system |
JPWO2007020710A1 (ja) * | 2005-08-19 | 2009-02-19 | パナソニック株式会社 | 基地局装置および移動局装置 |
CN101238666B (zh) * | 2005-08-22 | 2011-06-01 | 松下电器产业株式会社 | 基站装置以及移动台装置 |
US9209956B2 (en) | 2005-08-22 | 2015-12-08 | Qualcomm Incorporated | Segment sensitive scheduling |
JP4744525B2 (ja) * | 2005-08-22 | 2011-08-10 | パナソニック株式会社 | 基地局装置および移動局装置 |
US20070041457A1 (en) | 2005-08-22 | 2007-02-22 | Tamer Kadous | Method and apparatus for providing antenna diversity in a wireless communication system |
US8331465B2 (en) | 2005-08-23 | 2012-12-11 | Apple Inc. | Adaptive two-dimensional channel interpolation |
EP3457615B1 (en) | 2005-08-23 | 2021-09-22 | Apple Inc. | Methods and systems for ofdm multiple zone partitioning |
WO2007023359A2 (en) * | 2005-08-23 | 2007-03-01 | Nokia Corporation, | Apparatus, method and computer program product providing initial cell acquisition and pilot sequence detection |
US7826555B2 (en) | 2005-08-24 | 2010-11-02 | Panasonic Corporation | MIMO-OFDM transmission device and MIMO-OFDM transmission method |
JPWO2007023917A1 (ja) * | 2005-08-24 | 2009-02-26 | シャープ株式会社 | 無線通信方法および受信機 |
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 |
KR100767312B1 (ko) | 2005-09-05 | 2007-10-17 | 한국전자통신연구원 | 셀룰러 시스템의 하향 링크 신호 생성 장치와 셀 탐색 방법및 장치 |
WO2007029958A1 (en) * | 2005-09-05 | 2007-03-15 | Electronics And Telecommunications Research Institute | Apparatus for generating down link signal, and method and apparatus for cell search in cellular system |
US8600336B2 (en) | 2005-09-12 | 2013-12-03 | Qualcomm Incorporated | Scheduling with reverse direction grant in wireless communication systems |
US8738053B2 (en) * | 2005-09-21 | 2014-05-27 | Broadcom Corporation | Method and system for finding a threshold for semi-orthogonal user group selection in multiuser MIMO downlink transmission |
JP2009510820A (ja) * | 2005-09-27 | 2009-03-12 | ノキア コーポレイション | マルチキャリア伝送のためのパイロット構造 |
EP1929819B1 (en) | 2005-09-30 | 2019-08-07 | Apple Inc. | Initial access channel for scalable wireless mobile communication networks |
WO2007037415A1 (ja) * | 2005-09-30 | 2007-04-05 | Sharp Kabushiki Kaisha | 無線送信装置、無線受信装置、無線通信システム、無線送信方法および無線受信方法 |
WO2007036798A2 (en) * | 2005-09-30 | 2007-04-05 | Nortel Networks Limited | Pilot scheme for a mimo communication system |
US7590184B2 (en) | 2005-10-11 | 2009-09-15 | Freescale Semiconductor, Inc. | Blind preamble detection for an orthogonal frequency division multiplexed sample stream |
US8477684B2 (en) | 2005-10-27 | 2013-07-02 | Qualcomm Incorporated | Acknowledgement of control messages in a wireless communication system |
US8693405B2 (en) | 2005-10-27 | 2014-04-08 | Qualcomm Incorporated | SDMA resource management |
US8582509B2 (en) | 2005-10-27 | 2013-11-12 | Qualcomm Incorporated | Scalable frequency band operation in wireless communication systems |
US9172453B2 (en) | 2005-10-27 | 2015-10-27 | Qualcomm Incorporated | Method and apparatus for pre-coding frequency division duplexing system |
US9225488B2 (en) | 2005-10-27 | 2015-12-29 | Qualcomm Incorporated | Shared signaling channel |
US8045512B2 (en) | 2005-10-27 | 2011-10-25 | Qualcomm Incorporated | Scalable frequency band operation in wireless communication systems |
WO2007050895A2 (en) * | 2005-10-27 | 2007-05-03 | Qualcomm Incorporated | A method and apparatus for r-ackch subcarrier allocation in a wireless communcation systems |
US9088384B2 (en) | 2005-10-27 | 2015-07-21 | Qualcomm Incorporated | Pilot symbol transmission in wireless communication systems |
US9144060B2 (en) | 2005-10-27 | 2015-09-22 | Qualcomm Incorporated | Resource allocation for shared signaling channels |
US9225416B2 (en) | 2005-10-27 | 2015-12-29 | Qualcomm Incorporated | Varied signaling channels for a reverse link in a wireless communication system |
US9210651B2 (en) | 2005-10-27 | 2015-12-08 | Qualcomm Incorporated | Method and apparatus for bootstraping information in a communication system |
JP4533833B2 (ja) * | 2005-10-31 | 2010-09-01 | 株式会社東芝 | 無線通信装置及び同期用シンボルにおける信号−サブキャリア割り当て方法 |
WO2007052995A1 (en) * | 2005-11-07 | 2007-05-10 | Electronics And Telecommunications Research Institute | Method for using flexible bandwidth in ofdma-based cognitive radio system, base station and subscriber station using the same |
JP4852984B2 (ja) * | 2005-11-09 | 2012-01-11 | 株式会社日立製作所 | 複数基地局を用いた伝送路マルチ化システム |
US8582548B2 (en) | 2005-11-18 | 2013-11-12 | Qualcomm Incorporated | Frequency division multiple access schemes for wireless communication |
US7623599B2 (en) * | 2005-11-21 | 2009-11-24 | Freescale Semiconductor, Inc. | Blind bandwidth detection for a sample stream |
JP4841235B2 (ja) | 2005-11-30 | 2011-12-21 | 富士通株式会社 | 無線基地局、無線通信方法及び無線通信システム |
KR100788894B1 (ko) * | 2005-12-09 | 2007-12-27 | 한국전자통신연구원 | 확대된 서비스 영역을 제공하는 직교 주파수 분할 다중방식의 무선 랜 송수신 시스템 및 그 방법 |
KR100973585B1 (ko) * | 2005-12-10 | 2010-08-02 | 한국전자통신연구원 | Mimo 이동 통신 시스템에서 타이밍 에러와 주파수오프셋을 추정하는 방법 및 그 장치 |
WO2007069203A2 (en) * | 2005-12-15 | 2007-06-21 | Koninklijke Philips Electronics N.V. | Ofdm system synchronization using correlations with known pilot patterns |
ES2306557B1 (es) * | 2005-12-23 | 2009-09-03 | Diseño De Sistemas En Silicio, S.A. | Procedimiento de transmision y recepcion de señales con diferentes frecuencias de muestreo. |
KR100821275B1 (ko) * | 2006-01-04 | 2008-04-11 | 한국전자통신연구원 | 하향링크 신호를 생성하는 방법, 그리고 셀 탐색을수행하는 방법 |
WO2008082038A1 (en) * | 2006-01-04 | 2008-07-10 | Electronics And Telecommunications Research Institute | Method for generating downlink signal, and method for searching cell |
US8831607B2 (en) | 2006-01-05 | 2014-09-09 | Qualcomm Incorporated | Reverse link other sector communication |
US8649365B2 (en) * | 2006-01-06 | 2014-02-11 | Nokia Corporation | Dedicated synchronization signal for OFDMA system |
US9326221B2 (en) * | 2006-01-26 | 2016-04-26 | Nokia Technologies Oy | Method and system for signaling neighboring signals in TPS bits |
US7983143B2 (en) | 2006-02-08 | 2011-07-19 | Motorola Mobility, Inc. | Method and apparatus for initial acquisition and cell search for an OFDMA system |
US7911935B2 (en) | 2006-02-08 | 2011-03-22 | Motorola Mobility, Inc. | Method and apparatus for interleaving sequence elements of an OFDMA synchronization channel |
JP4367422B2 (ja) | 2006-02-14 | 2009-11-18 | ソニー株式会社 | 無線通信装置及び無線通信方法 |
KR101194072B1 (ko) * | 2006-02-15 | 2012-10-24 | 삼성전자주식회사 | 비동기식 이동통신시스템에서 오프라인 페이징 지시자정보를 획득하는 장치 및 방법 |
US7675844B2 (en) * | 2006-02-24 | 2010-03-09 | Freescale Semiconductor, Inc. | Synchronization for OFDM signals |
CA2637182C (en) | 2006-02-28 | 2015-04-28 | Rotani, Inc. | Methods and apparatus for overlapping mimo antenna physical sectors |
US8605570B2 (en) * | 2006-03-07 | 2013-12-10 | Samsung Electronics Co., Ltd. | Method and system for generating a superframe preamble in an orthogonal frequency division multiplexing network |
US7773662B2 (en) * | 2006-03-08 | 2010-08-10 | Renesas Technology Corporation | Synchronizing to symbols received via wireless communications channel |
WO2007106980A1 (en) | 2006-03-17 | 2007-09-27 | Nortel Networks Limited | Closed-loop mimo systems and methods |
KR101306733B1 (ko) * | 2006-03-24 | 2013-09-11 | 엘지전자 주식회사 | 무선 통신 시스템에서 데이터 심볼의 전송을 지원하기 위해프리엠블을 설정하는 방법 및 구조 |
US7944808B2 (en) * | 2006-03-24 | 2011-05-17 | Lg Electronics Inc. | OFDM symbol design for different channel conditions and for backward compatibility with 1xEV-DO and NxEV-DO |
EP1999863B1 (en) * | 2006-03-24 | 2016-08-03 | LG Electronics Inc. | A method of reducing overhead for multi-input, multi-output transmission system |
US8351405B2 (en) * | 2006-07-14 | 2013-01-08 | Qualcomm Incorporated | Method and apparatus for signaling beacons in a communication system |
US8045927B2 (en) * | 2006-04-27 | 2011-10-25 | Nokia Corporation | Signal detection in multicarrier communication system |
US8780936B2 (en) * | 2006-05-22 | 2014-07-15 | Qualcomm Incorporated | Signal acquisition for wireless communication systems |
CN101083647B (zh) * | 2006-05-30 | 2010-12-29 | 中兴通讯股份有限公司 | 一种多输入多输出正交频分复用系统中实现同步的方法 |
US7991077B1 (en) * | 2006-05-31 | 2011-08-02 | Marvell International Ltd. | Preamble detection with multiple receive antennas |
TWI690179B (zh) | 2006-06-09 | 2020-04-01 | 美商進化無線責任有限公司 | 行動通訊系統中傳送資料之方法和裝置 |
WO2007147121A2 (en) * | 2006-06-16 | 2007-12-21 | Qualcomm Incorporated | Multiplexing of information streams |
JP4935202B2 (ja) * | 2006-06-20 | 2012-05-23 | 富士通株式会社 | 通信システム |
US7675846B2 (en) | 2006-06-23 | 2010-03-09 | Telefonaktiebolaget L M Ericsson (Publ) | Method and system for using the synchronization channel to obtain measurements in a cellular communications system |
US7872961B2 (en) * | 2006-06-29 | 2011-01-18 | Motorola Mobility, Inc. | Orthogonal frequency division multiple access message processing method and apparatus |
CN100571243C (zh) * | 2006-07-14 | 2009-12-16 | 华为技术有限公司 | 一种组帧同步方法 |
CA2642017C (en) | 2006-07-25 | 2012-09-18 | Il-Gyu Kim | Cell search method, forward link frame transmission method, apparatus using the same and forward link frame structure |
US20080025197A1 (en) * | 2006-07-28 | 2008-01-31 | Mccoy James W | Estimating frequency error of a sample stream |
JPWO2008018145A1 (ja) * | 2006-08-10 | 2009-12-24 | パナソニック株式会社 | Ofdm送信装置およびofdm受信装置 |
US7876863B2 (en) * | 2006-08-10 | 2011-01-25 | Cisco Technology, Inc. | Method and system for improving timing position estimation in wireless communications networks |
US8400998B2 (en) | 2006-08-23 | 2013-03-19 | Motorola Mobility Llc | Downlink control channel signaling in wireless communication systems |
CN102984824B (zh) | 2006-09-29 | 2015-12-23 | 松下电器(美国)知识产权公司 | 终端装置和终端装置执行的发送方法 |
US7831414B2 (en) * | 2006-10-06 | 2010-11-09 | Qualcomm Incorporated | Method and apparatus for detecting a presence of a signal in a communication channel |
JP4991871B2 (ja) * | 2006-10-26 | 2012-08-01 | クゥアルコム・インコーポレイテッド | 無線通信システムにおけるパケット検出のための方法および装置 |
KR101208540B1 (ko) | 2006-10-30 | 2012-12-05 | 엘지전자 주식회사 | 코드 분할 다중 접속 방식 이동통신 시스템에서 동기 코드특성을 이용한 초기 셀 탐색 방법 및 장치 |
KR100810351B1 (ko) * | 2006-11-15 | 2008-03-04 | 재단법인서울대학교산학협력재단 | 통신 시스템에서 채널 프루빙 시스템 및 방법 |
CN101197804B (zh) * | 2006-12-04 | 2011-09-21 | 华为技术有限公司 | 一种同步处理方法及系统 |
DE102006057316B4 (de) * | 2006-12-05 | 2020-12-03 | Rohde & Schwarz GmbH & Co. Kommanditgesellschaft | Messverfahren und Vorrichtung zur Beurteilung eines OFDM-Mehrantennensenders |
US20080165673A1 (en) * | 2007-01-09 | 2008-07-10 | Motorola, Inc. | System and method for demodulating data in an orthogonal frequency division modulation system |
US20090252070A1 (en) * | 2007-01-12 | 2009-10-08 | Connors Dennis P | Airlink management in a wireless broadcast system |
US8774229B2 (en) * | 2007-01-12 | 2014-07-08 | Wi-Lan, Inc. | Multidiversity handoff in a wireless broadcast system |
US8064444B2 (en) * | 2007-01-12 | 2011-11-22 | Wi-Lan Inc. | Wireless broadcasting system |
US7912057B2 (en) | 2007-01-12 | 2011-03-22 | Wi-Lan Inc. | Convergence sublayer for use in a wireless broadcasting system |
US7944919B2 (en) * | 2007-01-12 | 2011-05-17 | Wi-Lan, Inc. | Connection identifier for wireless broadcast system |
US8681715B2 (en) * | 2007-01-18 | 2014-03-25 | Panasonic Corporation | Radio communication method and radio communication device |
US8548520B2 (en) | 2007-01-26 | 2013-10-01 | Wi-Lan Inc. | Multiple network access system and method |
DE602007014174D1 (de) * | 2007-02-05 | 2011-06-09 | Sequans Comm | Verfahren und Vorrichtung zur Zeitsynchronisation und Scanning von Nachbarzellen für zelluläre OFDM-Systeme |
US8027329B2 (en) * | 2007-02-07 | 2011-09-27 | Telefonaktiebolaget Lm Ericsson (Publ) | Preamble design for synchronization and cell search |
KR20080089728A (ko) * | 2007-04-02 | 2008-10-08 | 엘지전자 주식회사 | 다중 부 반송파 시스템에서의 부 반송파 간격 적용 방법 및이를 지원하는 이동 단말 |
WO2008100188A1 (en) * | 2007-02-15 | 2008-08-21 | Telefonaktiebolaget Lm Ericsson (Publ) | Channel measurements on combined pilot signala in multi- carrier systems |
US9137075B2 (en) * | 2007-02-23 | 2015-09-15 | Telefonaktiebolaget Lm Ericsson (Publ) | Subcarrier spacing identification |
US7684313B2 (en) * | 2007-03-30 | 2010-03-23 | Zoran Corporation | System and method for FFT window timing synchronization for an orthogonal frequency-division multiplexed data stream |
EP2140580B1 (en) * | 2007-04-18 | 2017-02-22 | Wi-LAN Inc. | Base station synchronization for a single frequency network |
US7903604B2 (en) * | 2007-04-18 | 2011-03-08 | Wi-Lan Inc. | Method and apparatus for a scheduler for a macro-diversity portion of a transmission |
US8665694B2 (en) * | 2007-08-14 | 2014-03-04 | Marvell World Trade Ltd. | Pilot design for universal frequency reuse in cellular orthogonal frequency-division multiplexing systems |
WO2009023212A2 (en) | 2007-08-15 | 2009-02-19 | Marvell World Trade Ltd. | Pilot design for universal frequency reuse in cellular orthogonal frequency-division multiplexing systems |
JP4869404B2 (ja) * | 2007-09-04 | 2012-02-08 | シャープ株式会社 | 基地局装置、移動局装置、分布アンテナ無線通信システム、パイロットチャネル生成方法、同期チャネル生成方法およびアンテナ選択方法 |
US7903750B2 (en) * | 2007-09-11 | 2011-03-08 | Zoran Corporation | System and method for determining transmission parameters in an orthogonal frequency-division multiplexed data stream |
US7782757B2 (en) * | 2007-10-03 | 2010-08-24 | Industrial Technology Research Institute | Adaptive pilot design for mobile system |
US7974254B2 (en) * | 2007-10-22 | 2011-07-05 | Nokia Corporation | Digital broadcast signaling metadata |
WO2009054058A1 (ja) * | 2007-10-25 | 2009-04-30 | Fujitsu Limited | 送信方法、無線基地局および移動局 |
CN101836410A (zh) * | 2007-10-31 | 2010-09-15 | 高通股份有限公司 | 使用时分多路复用导频在广播ofdm系统中的同步 |
US8219891B2 (en) * | 2007-11-06 | 2012-07-10 | Qualcomm Incorporated | Method and apparatus for creating beamforming profiles in a wireless communication network |
US8175022B2 (en) * | 2007-12-19 | 2012-05-08 | Intel Corporation | Transmission of system configuration information in mobile WiMAX systems |
JP5136085B2 (ja) * | 2008-01-25 | 2013-02-06 | 富士通株式会社 | 受信装置及び移動端末装置並びに同期タイミング検出方法 |
EP2099185B1 (en) * | 2008-01-29 | 2017-07-12 | Telefonaktiebolaget LM Ericsson (publ) | Channel estimation in a terminal of an OFDM-based, cellular telecommunications system |
US8009685B2 (en) * | 2008-02-01 | 2011-08-30 | Nokia Corporation | Signalling the presence of extension frames |
WO2009123410A1 (en) * | 2008-03-31 | 2009-10-08 | Lg Electronics Inc. | A method for signaling uplink system configuration information |
GB2459284A (en) * | 2008-04-17 | 2009-10-21 | Stephen George Nunney | MIMO spatial multiplexing system |
US7843806B2 (en) * | 2008-05-07 | 2010-11-30 | Wipro Techno Centre (Singapore) Pte Ltd. | Apparatus and methods for estimating and compensating sampling clock offset |
KR101083575B1 (ko) | 2008-07-04 | 2011-11-14 | 주식회사 세아네트웍스 | 파일럿 할당 방법 |
US8811339B2 (en) | 2008-07-07 | 2014-08-19 | Blackberry Limited | Handover schemes for wireless systems |
KR101488028B1 (ko) | 2008-07-17 | 2015-01-30 | 엘지전자 주식회사 | 다중 안테나 시스템에서 참조신호 전송 방법 |
KR101027233B1 (ko) | 2008-07-23 | 2011-04-06 | 엘지전자 주식회사 | 다중 안테나 시스템에서 참조신호 전송 방법 |
US8665803B2 (en) * | 2008-07-31 | 2014-03-04 | Qualcomm Incorporated | Tone selection in communication networks |
US8670376B2 (en) | 2008-08-12 | 2014-03-11 | Qualcomm Incorporated | Multi-carrier grant design |
JP5111664B2 (ja) | 2008-08-18 | 2013-01-09 | リサーチ イン モーション リミテッド | トレーニングシーケンス送信および受信のためのシステム、デバイスおよび方法 |
JP4666031B2 (ja) | 2008-09-09 | 2011-04-06 | ソニー株式会社 | 同期回路並びに無線通信装置 |
JP4636162B2 (ja) * | 2008-10-10 | 2011-02-23 | ソニー株式会社 | 無線通信装置及び無線通信方法 |
WO2010047514A2 (en) * | 2008-10-21 | 2010-04-29 | Lg Electronics Inc. | Apparatus for transmitting and receiving a signal and method of transmitting and receiving a signal |
US8711672B2 (en) * | 2008-12-30 | 2014-04-29 | Acer Incorporated | Wireless communication system using pilot allocation, method and pilot pattern thereof |
EP2396914A4 (en) * | 2009-02-10 | 2015-03-25 | Lenovo Innovations Ltd Hong Kong | NON-COHERENT PROCEDURE FOR DETECTING THE NUMBER OF TRANSIT ANTENNAPORTS FOR OFDMA |
US9397876B2 (en) * | 2009-02-20 | 2016-07-19 | Broadcom Corporation | Synchronization and frame structure determination of a base station |
US8107888B2 (en) * | 2009-03-04 | 2012-01-31 | Clearwire IP Holdings, LLC | Communication operating mode selection based on multi-path signal power measurement |
GB2470758B (en) * | 2009-06-03 | 2014-08-20 | Sony Corp | Data processing apparatus and method |
US8638834B2 (en) * | 2009-07-15 | 2014-01-28 | Cisco Technology, Inc. | Signal sequence detection techniques for OFDM/OFDMA systems |
EP2467962A1 (en) | 2009-08-21 | 2012-06-27 | Aware, Inc. | Header repetition in packet-based ofdm systems |
WO2011079406A1 (en) * | 2009-12-28 | 2011-07-07 | Telefonaktiebolaget L M Ericsson (Publ) | Method and arrangement of delay calibration for ofdm system |
CN101778088B (zh) * | 2010-03-12 | 2012-05-30 | 中国科学院声学研究所 | 一种基于伪随机序列调制的训练序列帧定时同步方法 |
KR101684971B1 (ko) | 2010-03-25 | 2016-12-09 | 엘지전자 주식회사 | 분산된 안테나 시스템에서 동기 신호 송수신 방법 및 장치 |
WO2011118927A2 (en) * | 2010-03-25 | 2011-09-29 | Lg Electronics Inc. | Method and apparatus of transmitting and receiving synchronization signal in a distributed antenna system |
CN102404089B (zh) * | 2010-09-08 | 2016-04-27 | 兰蒂克德国有限责任公司 | 用于多输入多输出的帧结构 |
US8547884B2 (en) | 2010-09-28 | 2013-10-01 | Neocific, Inc. | Methods and apparatus for flexible use of frequency bands |
IL210169A0 (en) | 2010-12-22 | 2011-03-31 | Yehuda Binder | System and method for routing-based internet security |
JP2012165040A (ja) * | 2011-02-03 | 2012-08-30 | Sharp Corp | 受信装置、受信方法、通信システムおよび通信方法 |
US20130315323A1 (en) * | 2011-04-24 | 2013-11-28 | Broadcom Corporation | Traveling pilots within single user, multiple user, multiple access, and/or MIMO wireless communications |
CN102257799B (zh) * | 2011-06-10 | 2014-11-05 | 华为技术有限公司 | 用于测量线路的信号发送方法、装置及通信设备 |
KR20130006935A (ko) * | 2011-06-27 | 2013-01-18 | 삼성전자주식회사 | 수신기 및 이의 동작 방법 |
WO2013093550A1 (en) | 2011-12-19 | 2013-06-27 | Nokia Corporation | An apparatus and associated methods for switching between antennas in a multi-antenna receiver |
TWI470958B (zh) * | 2012-01-03 | 2015-01-21 | Mstar Semiconductor Inc | 應用於無線網路接收端以判斷發射端天線數目的方法與相關裝置 |
CN103378897B (zh) * | 2012-04-23 | 2017-12-22 | 中兴通讯股份有限公司 | 实现cmmb分集接收的方法及装置 |
CN104756563A (zh) | 2012-08-31 | 2015-07-01 | 诺基亚技术有限公司 | 定位装置 |
US8817735B1 (en) * | 2012-09-28 | 2014-08-26 | Sprint Spectrum L.P. | Systems and methods for allocating fully-orthogonal and quasi-orthogonal spreading codes to access terminals in radio access networks based on a tolerance level for additional interference on a per-access-terminal basis |
WO2014058432A1 (en) * | 2012-10-12 | 2014-04-17 | Nokia Siemens Networks Oy | Vswr estimation using correlation to suppress external interference |
US10051659B2 (en) * | 2012-11-09 | 2018-08-14 | Interdigital Patent Holdings, Inc. | Method and apparatus for coordinated orthogonal channel access (COCA) |
US10038507B2 (en) * | 2013-02-13 | 2018-07-31 | Nippon Telegraph And Telephone Corporation | Optical transmission system, phase compensation method, and optical reception apparatus |
WO2014161135A1 (en) * | 2013-04-01 | 2014-10-09 | Harman International Industries, Incorporated | Coarse timing |
CN103259757B (zh) * | 2013-05-22 | 2015-10-21 | 西南石油大学 | 一种有效的mimo-ofdm系统的时间与频率同步新方法 |
CN103298101B (zh) * | 2013-06-19 | 2016-02-17 | 中国人民解放军空军工程大学 | 一种宽范围的码辅助载波同步实现方法 |
CA2920292C (en) | 2013-08-21 | 2021-06-22 | University Of South Australia | A multiuser communications system |
CN103647742B (zh) * | 2013-12-25 | 2017-09-08 | 上海贝岭股份有限公司 | 电力线载波ofdm系统的通信方法和设备 |
US20150215880A1 (en) * | 2014-01-28 | 2015-07-30 | Qualcomm Incorporated | Devices and methods for locating received tones in wireless communications systems |
US10693623B2 (en) | 2014-01-31 | 2020-06-23 | Apple Inc. | Reference subframes for synchronization and cell measurements |
WO2016022287A1 (en) | 2014-08-07 | 2016-02-11 | Coherent Logix, Incorporated | Multi-partition radio frames |
BR122023024931A2 (pt) * | 2014-08-07 | 2024-01-23 | ONE Media, LLC | Aparelho e método para transmitir um fluxo de transporte de taxa variável |
US20160100373A1 (en) * | 2014-10-07 | 2016-04-07 | Mediatek Inc. | Signal Format for Cell Search and Synchronization in Wireless Networks |
US9374796B2 (en) * | 2014-10-10 | 2016-06-21 | Qualcomm Incorporated | Channel structure for a cellular internet of things system |
US9596105B1 (en) * | 2014-12-05 | 2017-03-14 | Marvell Intenational Ltd. | Time tracking schemes for reduced ISI in multi-transmission-point OFDM systems |
WO2016133044A1 (ja) * | 2015-02-20 | 2016-08-25 | 日本電気株式会社 | 受信装置、受信方法 |
CN106209298B (zh) * | 2015-04-29 | 2019-08-06 | 扬智科技股份有限公司 | 峰值计算方法和装置及使用该方法的帧头检测方法 |
GB2539018B (en) * | 2015-06-03 | 2019-11-06 | Imagination Tech Ltd | Sampling frequency offset calculation |
CN106254046B (zh) * | 2015-06-05 | 2020-06-09 | 上海数字电视国家工程研究中心有限公司 | 前导符号信号长度的选取方法 |
RU2713466C2 (ru) * | 2015-07-21 | 2020-02-05 | Конинклейке Филипс Н.В. | Индуктивная беспроводная передача мощности с синхронизированным измерением мощности |
US10952043B2 (en) | 2015-08-21 | 2021-03-16 | Nec Corporation | Vehicle to everything (V2X) communication method and system |
US10333668B2 (en) * | 2015-10-05 | 2019-06-25 | Qualcomm Incorporated | Enhanced component carrier discovery reference signals |
WO2017135878A1 (en) * | 2016-02-04 | 2017-08-10 | Telefonaktiebolaget Lm Ericsson (Publ) | Methods and arrangements for supporting cell selection and cell reselection in a wireless communication network |
KR101796440B1 (ko) * | 2016-02-05 | 2017-11-10 | 주식회사 이노와이어리스 | 신호 분석기에서 gsm 신호의 슬롯 동기화 방법 |
GB2547266A (en) | 2016-02-12 | 2017-08-16 | Sony Corp | Transmitter, receiver and methods |
GB2547267A (en) * | 2016-02-12 | 2017-08-16 | Sony Corp | Transmitter, receiver and methods |
CN105577600B (zh) * | 2016-03-16 | 2019-02-05 | 东南大学 | Mimo-ofdm wlan系统的同步方法及系统 |
EP3437282B1 (en) | 2016-03-31 | 2020-03-18 | Fraunhofer Gesellschaft zur Förderung der angewandten Forschung E.V. | Optimized preamble and method for interference robust packet detection for telemetry applications |
CN107623652B (zh) * | 2016-07-14 | 2022-01-11 | 中兴通讯股份有限公司 | 一种数据传输方法及装置 |
CN107786314B (zh) * | 2016-08-27 | 2020-05-26 | 上海朗帛通信技术有限公司 | 一种无线通信中的方法和装置 |
CN106302297B (zh) * | 2016-09-22 | 2019-05-03 | 大连海事大学 | 一种循环卷积六边形多载波传输方法 |
US11916720B2 (en) | 2016-09-30 | 2024-02-27 | Sony Group Corporation | Subcarrier spacing selection for synchronization signals |
US10257012B2 (en) * | 2016-12-13 | 2019-04-09 | Samsung Electronics Co., Ltd | Apparatus and method for coarse timing and frequency synchronization |
JP7068601B2 (ja) * | 2017-03-30 | 2022-05-17 | 日本電気株式会社 | マルチトーン信号検出装置、マルチトーン信号検出方法及びプログラム |
DE102017116273A1 (de) | 2017-03-30 | 2018-10-04 | Riedel Communications International GmbH | Netzwerkgerät für ein Intercom-Netzwerk |
EP3383005B1 (de) | 2017-03-30 | 2023-10-11 | RIEDEL Communications International GmbH | Netzwerkgerät für ein intercom-netzwerk |
CN110603794A (zh) | 2017-05-02 | 2019-12-20 | 交互数字专利控股公司 | 针对单用户和多用户传输的波形编码以及调制 |
US10666489B2 (en) * | 2017-09-18 | 2020-05-26 | Apple Inc. | Synchronization sequence design for device-to-device communication |
CN108040028A (zh) * | 2017-12-22 | 2018-05-15 | 中国人民解放军国防科技大学 | 一种基于本地序列互相关检测的ofdm系统抗干扰信号检测与同步方法 |
US10924303B2 (en) * | 2018-03-05 | 2021-02-16 | Apple Inc. | Secure training sequence symbol structure |
CN110708266A (zh) * | 2018-07-09 | 2020-01-17 | 普天信息技术有限公司 | 无线网络同步方法及装置 |
CN109412996A (zh) * | 2018-12-11 | 2019-03-01 | 深圳大学 | 链路自适应方法、电子装置及计算机可读存储介质 |
CN110336765B (zh) * | 2019-07-05 | 2022-04-01 | 北京神经元网络技术有限公司 | 高速工业通信系统的同步方法、装置、网络设备及存储介质 |
CN111800366B (zh) * | 2020-07-02 | 2022-08-26 | 东方红卫星移动通信有限公司 | 复杂多径环境下的ofdm符号定时同步方法及接收设备 |
CN111740937B (zh) * | 2020-08-13 | 2020-11-10 | 中国人民解放军国防科技大学 | 无线宽带通信系统的同步方法、装置、设备及存储介质 |
CN114363198B (zh) * | 2022-01-14 | 2023-07-21 | 深圳市优网科技有限公司 | 数据采集方法及装置、存储介质及电子设备 |
Family Cites Families (72)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US122382A (en) * | 1872-01-02 | Improvement in argand gas-burners | ||
US122381A (en) * | 1872-01-02 | Improvement in machines for making carpet-lining | ||
US80887A (en) * | 1868-08-11 | James waldie | ||
SE9302453L (sv) * | 1993-07-20 | 1994-10-17 | Telia Ab | Förfarande och anordning för synkronisering i digitalt transmissionssystem av typen OFDM |
US5581555A (en) * | 1993-09-17 | 1996-12-03 | Scientific-Atlanta, Inc. | Reverse path allocation and contention resolution scheme for a broadband communications system |
JP2731722B2 (ja) * | 1994-05-26 | 1998-03-25 | 日本電気株式会社 | クロック周波数自動制御方式及びそれに用いる送信装置と受信装置 |
GB9413481D0 (en) * | 1994-07-05 | 1994-08-24 | British Broadcasting Corp | Improvements to digital transmission systems |
US5598582A (en) * | 1995-03-06 | 1997-02-04 | Marmon Holdings, Inc. | Heat resistant and cut and puncture protective hand covering |
US5726978A (en) * | 1995-06-22 | 1998-03-10 | Telefonaktiebolaget L M Ericsson Publ. | Adaptive channel allocation in a frequency division multiplexed system |
JP2802255B2 (ja) * | 1995-09-06 | 1998-09-24 | 株式会社次世代デジタルテレビジョン放送システム研究所 | 直交周波数分割多重伝送方式及びそれを用いる送信装置と受信装置 |
CA2217575C (en) * | 1996-03-05 | 2005-07-12 | Ntt Mobile Communications Network Inc. | Signal transmission method, transmitter, receiver, and spreading code sychronizing method in mobile communication system |
JP2001527706A (ja) | 1996-10-31 | 2001-12-25 | ディスコビジョン アソシエイツ | 直交周波数分割多重を使用するデジタル受信機のシングルチップvlsi実施 |
KR100221336B1 (ko) | 1996-12-28 | 1999-09-15 | 전주범 | 직교 주파수 분할 다중화 수신 시스템의 프레임 동기 장치 및 그 방법 |
US5933421A (en) * | 1997-02-06 | 1999-08-03 | At&T Wireless Services Inc. | Method for frequency division duplex communications |
WO1998037654A2 (en) | 1997-02-24 | 1998-08-27 | At & T Wireless Services, Inc. | Vertical adaptive antenna array for a discrete multitone spread spectrum communications system |
US6175550B1 (en) * | 1997-04-01 | 2001-01-16 | Lucent Technologies, Inc. | Orthogonal frequency division multiplexing system with dynamically scalable operating parameters and method thereof |
US6137847A (en) * | 1997-05-02 | 2000-10-24 | Lsi Logic Corporation | Demodulating digital video broadcast signals |
US5867478A (en) * | 1997-06-20 | 1999-02-02 | Motorola, Inc. | Synchronous coherent orthogonal frequency division multiplexing system, method, software and device |
CN1984112B (zh) | 1997-07-01 | 2010-12-15 | 松下电器产业株式会社 | 发送方法、发送装置、接收方法、接收装置 |
US6038450A (en) * | 1997-09-12 | 2000-03-14 | Lucent Technologies, Inc. | Soft handover system for a multiple sub-carrier communication system and method thereof |
GB2332603B (en) * | 1997-12-22 | 2000-07-19 | Lsi Logic Corp | Improvements relating to multidirectional communication systems |
EP2154854B1 (en) * | 1998-01-06 | 2012-03-07 | Mosaid Technologies Incorporated | Multicarrier modulation system with variable symbol rates |
EP0938193A1 (en) * | 1998-02-18 | 1999-08-25 | Sony International (Europe) GmbH | Header structure for TDD systems |
FI105437B (fi) * | 1998-09-08 | 2000-08-15 | Domiras Oy | Menetelmä langattomassa tietoliikennejärjestelmässä, järjestelmä, lähetin ja vastaanotin |
US6798736B1 (en) * | 1998-09-22 | 2004-09-28 | Qualcomm Incorporated | Method and apparatus for transmitting and receiving variable rate data |
US6205193B1 (en) * | 1998-10-15 | 2001-03-20 | Ericsson Inc. | Systems and methods for fast terminal synchronization in a wireless communication system |
JP2000252951A (ja) * | 1999-03-01 | 2000-09-14 | Sony Corp | 同期信号検出方法及び無線通信装置 |
DE69912734T2 (de) * | 1999-03-12 | 2004-05-27 | Motorola, Inc., Schaumburg | Vorrichtung und Verfahren zur Erzeugung der Gewichtung einer Sendeantenne |
US6480558B1 (en) * | 1999-03-17 | 2002-11-12 | Ericsson Inc. | Synchronization and cell search methods and apparatus for wireless communications |
US6606341B1 (en) * | 1999-03-22 | 2003-08-12 | Golden Bridge Technology, Inc. | Common packet channel with firm handoff |
MY128734A (en) * | 1999-03-22 | 2007-02-28 | Golden Bridge Tech Inc | Common packet channel |
US6498934B1 (en) * | 1999-03-24 | 2002-12-24 | Telefonaktiebologet Lm Ericsson (Publ) | Channel allocation using enhanced pathloss estimates |
EP1049302B1 (en) | 1999-04-23 | 2006-06-28 | Sony Deutschland GmbH | Synchronization preamble in an OFDM system |
TW463481B (en) * | 1999-04-28 | 2001-11-11 | Fujitsu Ltd | Cell search method, communication synchronization apparatus, portable terminal apparatus, and recording medium |
KR100347431B1 (ko) * | 1999-05-26 | 2002-08-03 | 오성근 | 안테나 배열을 이용한 동기화 시스템을 위한 신호 결합 장치 |
AU740804B2 (en) | 1999-07-19 | 2001-11-15 | Nippon Telegraph & Telephone Corporation | OFDM packet communication receiver system |
JP3596442B2 (ja) | 1999-07-19 | 2004-12-02 | 日本電信電話株式会社 | 無線パケット通信用ofdm受信装置 |
US6115406A (en) * | 1999-09-10 | 2000-09-05 | Interdigital Technology Corporation | Transmission using an antenna array in a CDMA communication system |
NZ526199A (en) * | 1999-10-22 | 2004-11-26 | Nextnet Wireless Inc | Fixed OFDM wireless MAN utilizing CPE having internal antenna, where the OFDM symbols are without training symbols |
JP2001128215A (ja) | 1999-10-29 | 2001-05-11 | Matsushita Electric Ind Co Ltd | Tdma−tdd方式送受信装置および送受信方法 |
US7206580B2 (en) * | 1999-11-04 | 2007-04-17 | Qualcomm Incorporated | Method and apparatus for performing handoff in a high speed communication system |
US6298092B1 (en) * | 1999-12-15 | 2001-10-02 | Iospan Wireless, Inc. | Methods of controlling communication parameters of wireless systems |
JP4666865B2 (ja) | 1999-12-23 | 2011-04-06 | インスティテュート ナシオナル ド ラ ルシェルシュ サイエンティフィーク | Cdmaシステムにおける干渉抑制 |
JP3522619B2 (ja) * | 2000-01-05 | 2004-04-26 | 株式会社エヌ・ティ・ティ・ドコモ | マルチキャリアcdma伝送システムにおける送信機 |
KR20010077186A (ko) * | 2000-02-01 | 2001-08-17 | 박종섭 | 직교 주파수 분할 다중화 방식 송신 시스템의 보호구간삽입장치 |
US6650617B1 (en) * | 2000-02-22 | 2003-11-18 | Thomson Licensing S.A. | Reduced complexity FFT window synchronization for an orthogonal frequency division multiplexing system |
US20020154705A1 (en) | 2000-03-22 | 2002-10-24 | Walton Jay R. | High efficiency high performance communications system employing multi-carrier modulation |
US6473467B1 (en) * | 2000-03-22 | 2002-10-29 | Qualcomm Incorporated | Method and apparatus for measuring reporting channel state information in a high efficiency, high performance communications system |
US6493331B1 (en) * | 2000-03-30 | 2002-12-10 | Qualcomm Incorporated | Method and apparatus for controlling transmissions of a communications systems |
US6961364B1 (en) | 2000-04-18 | 2005-11-01 | Flarion Technologies, Inc. | Base station identification in orthogonal frequency division multiplexing based spread spectrum multiple access systems |
CN1118195C (zh) * | 2000-08-25 | 2003-08-13 | 清华大学 | 数字信息传输方法及其地面数字多媒体电视广播系统 |
US7406104B2 (en) | 2000-08-25 | 2008-07-29 | Lin Yang | Terrestrial digital multimedia/television broadcasting system |
US6985434B2 (en) | 2000-09-01 | 2006-01-10 | Nortel Networks Limited | Adaptive time diversity and spatial diversity for OFDM |
US7233625B2 (en) | 2000-09-01 | 2007-06-19 | Nortel Networks Limited | Preamble design for multiple input—multiple output (MIMO), orthogonal frequency division multiplexing (OFDM) system |
US7009931B2 (en) | 2000-09-01 | 2006-03-07 | Nortel Networks Limited | Synchronization in a multiple-input/multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) system for wireless applications |
US6850481B2 (en) | 2000-09-01 | 2005-02-01 | Nortel Networks Limited | Channels estimation for multiple input—multiple output, orthogonal frequency division multiplexing (OFDM) system |
KR100358120B1 (ko) | 2000-10-20 | 2002-10-25 | 한국전자통신연구원 | 동일대역 인접채널 방식의 디지털 오디오 방송 전송 시스템 |
US7106709B2 (en) * | 2000-11-29 | 2006-09-12 | Telefonaktiebologet Lm Ericsson (Publ) | Timing drift compensation in wireless packet-based systems |
US6947748B2 (en) | 2000-12-15 | 2005-09-20 | Adaptix, Inc. | OFDMA with adaptive subcarrier-cluster configuration and selective loading |
US20020080888A1 (en) | 2000-12-22 | 2002-06-27 | Li Shu | Message splitting and spatially diversified message routing for increasing transmission assurance and data security over distributed networks |
US20030002471A1 (en) | 2001-03-06 | 2003-01-02 | Crawford James A. | Method for estimating carrier-to-noise-plus-interference ratio (CNIR) for OFDM waveforms and the use thereof for diversity antenna branch selection |
US7088782B2 (en) * | 2001-04-24 | 2006-08-08 | Georgia Tech Research Corporation | Time and frequency synchronization in multi-input, multi-output (MIMO) systems |
US6959050B2 (en) * | 2001-06-15 | 2005-10-25 | Motorola, Inc. | Method and apparatus for synchronizing an OFDM signal |
US7027429B2 (en) * | 2001-06-19 | 2006-04-11 | Flarion Technologies, Inc. | Method and apparatus for time and frequency synchronization of OFDM communication systems |
US7190748B2 (en) * | 2001-08-17 | 2007-03-13 | Dsp Group Inc. | Digital front-end for wireless communication system |
US7088787B2 (en) * | 2001-09-24 | 2006-08-08 | Atheros Communications, Inc. | Post-FFT scaling to reduce multiple effects |
US7269127B2 (en) * | 2001-10-04 | 2007-09-11 | Bae Systems Information And Electronic Systems Integration Inc. | Preamble structures for single-input, single-output (SISO) and multi-input, multi-output (MIMO) communication systems |
US7548506B2 (en) * | 2001-10-17 | 2009-06-16 | Nortel Networks Limited | System access and synchronization methods for MIMO OFDM communications systems and physical layer packet and preamble design |
US7940640B2 (en) | 2006-01-20 | 2011-05-10 | Nortel Networks Limited | Adaptive orthogonal scheduling for virtual MIMO system |
CN101106800B (zh) | 2006-07-11 | 2012-08-29 | 工业和信息化部电信传输研究所 | 一种用于上行交织多址系统的资源调度方法 |
US8274952B2 (en) | 2006-10-10 | 2012-09-25 | Alcatel Lucent | Transmission power management |
US7483808B2 (en) | 2007-06-29 | 2009-01-27 | Caterpillar Inc. | System and method for measuring machine rolling resistance |
-
2002
- 2002-01-08 US US10/038,915 patent/US7548506B2/en not_active Expired - Fee Related
- 2002-10-15 KR KR1020107024290A patent/KR101129968B1/ko active IP Right Grant
- 2002-10-15 KR KR1020137015149A patent/KR101361540B1/ko active IP Right Grant
- 2002-10-15 KR KR1020107012105A patent/KR101033129B1/ko active IP Right Grant
- 2002-10-15 EP EP10161508A patent/EP2207297A1/en not_active Withdrawn
- 2002-10-15 EP EP10183133A patent/EP2267961A3/en not_active Ceased
- 2002-10-15 EP EP10158841A patent/EP2202907A1/en not_active Withdrawn
- 2002-10-15 EP EP10161516.9A patent/EP2211516B1/en not_active Expired - Lifetime
- 2002-10-15 KR KR1020047005738A patent/KR100934299B1/ko active IP Right Grant
- 2002-10-15 CN CN028249917A patent/CN1736052B/zh not_active Expired - Lifetime
- 2002-10-15 EP EP02767021A patent/EP1438799B1/en not_active Expired - Lifetime
- 2002-10-15 CN CN2010102453826A patent/CN101917265B/zh not_active Expired - Lifetime
- 2002-10-15 CN CN2010102453703A patent/CN101917264B/zh not_active Expired - Lifetime
- 2002-10-15 KR KR1020107003705A patent/KR101225428B1/ko active IP Right Grant
- 2002-10-15 KR KR1020107024291A patent/KR101129923B1/ko active IP Right Grant
- 2002-10-15 KR KR1020097001820A patent/KR20090015187A/ko not_active IP Right Cessation
- 2002-10-15 CN CN2010102453883A patent/CN101917377B/zh not_active Expired - Lifetime
- 2002-10-15 KR KR1020097001822A patent/KR100959956B1/ko active IP Right Grant
- 2002-10-15 WO PCT/CA2002/001542 patent/WO2003034642A2/en active Application Filing
- 2002-10-15 DE DE60239213T patent/DE60239213D1/de not_active Expired - Lifetime
- 2002-10-15 EP EP10183138A patent/EP2267962A3/en not_active Withdrawn
- 2002-10-15 KR KR1020107029478A patent/KR101349623B1/ko active IP Right Grant
- 2002-10-15 KR KR1020097013186A patent/KR100981818B1/ko active IP Right Grant
- 2002-10-15 KR KR1020097001821A patent/KR20090015188A/ko not_active IP Right Cessation
- 2002-10-15 EP EP10183010A patent/EP2267959A3/en not_active Withdrawn
- 2002-10-15 EP EP19160281.2A patent/EP3518455A1/en not_active Withdrawn
- 2002-10-15 AU AU2002331503A patent/AU2002331503A1/en not_active Abandoned
- 2002-10-15 KR KR1020107003126A patent/KR101033128B1/ko active IP Right Grant
- 2002-10-15 JP JP2003537241A patent/JP4276947B2/ja not_active Expired - Lifetime
- 2002-10-15 EP EP10183057A patent/EP2267960A3/en not_active Withdrawn
-
2006
- 2006-10-02 US US11/529,222 patent/US7912012B2/en active Active
- 2006-10-02 US US11/529,223 patent/US8085814B2/en active Active
- 2006-10-02 US US11/529,245 patent/US8018975B2/en active Active
-
2008
- 2008-08-14 JP JP2008209065A patent/JP5047905B2/ja not_active Expired - Lifetime
- 2008-11-12 US US12/269,432 patent/US8213292B2/en not_active Expired - Fee Related
-
2009
- 2009-01-14 JP JP2009005822A patent/JP5047998B2/ja not_active Expired - Lifetime
-
2010
- 2010-10-13 JP JP2010230740A patent/JP5048116B2/ja not_active Expired - Lifetime
- 2010-10-13 JP JP2010230741A patent/JP5401428B2/ja not_active Expired - Lifetime
-
2011
- 2011-08-05 US US13/204,238 patent/US8441918B2/en not_active Expired - Lifetime
-
2012
- 2012-06-04 US US13/487,898 patent/US8830816B2/en not_active Expired - Fee Related
- 2012-06-11 US US13/493,931 patent/US20120250787A1/en not_active Abandoned
-
2013
- 2013-07-17 US US13/944,398 patent/US9503161B2/en not_active Expired - Lifetime
- 2013-09-05 JP JP2013184327A patent/JP5698811B2/ja not_active Expired - Lifetime
- 2013-09-29 US US14/040,700 patent/US9172571B2/en not_active Expired - Fee Related
-
2015
- 2015-09-25 US US14/865,172 patent/US9866285B2/en not_active Expired - Lifetime
-
2016
- 2016-11-18 US US15/355,440 patent/US10237794B2/en not_active Expired - Lifetime
-
2018
- 2018-05-17 US US15/982,089 patent/US10595249B2/en not_active Expired - Fee Related
Also Published As
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN1736052B (zh) | 多载波码分多址系统中的同步 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
ASS | Succession or assignment of patent right |
Owner name: YANXING BIDEKE CO., LTD. Free format text: FORMER OWNER: NORTEL NETWORKS LTD (CA) Effective date: 20130314 Owner name: APPLE COMPUTER, INC. Free format text: FORMER OWNER: YANXING BIDEKE CO., LTD. Effective date: 20130314 |
|
C41 | Transfer of patent application or patent right or utility model | ||
TA01 | Transfer of patent application right |
Effective date of registration: 20130314 Address after: American New York Applicant after: NORTEL NETWORKS LTD. Address before: Quebec Applicant before: NORTEL NETWORKS Ltd. Effective date of registration: 20130314 Address after: American California Applicant after: APPLE Inc. Address before: American New York Applicant before: NORTEL NETWORKS LTD. |
|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20101215 Assignee: HUAWEI TECHNOLOGIES Co.,Ltd. Assignor: APPLE Inc. Contract record no.: 2015990000754 Denomination of invention: Synchronisation in multicarrier CDMA systems Granted publication date: 20130424 License type: Common License Record date: 20150827 |
|
LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
CX01 | Expiry of patent term | ||
CX01 | Expiry of patent term |
Granted publication date: 20130424 |