MX2009003198A - Metodos y aparatos para configurar un simbolo piloto en un sistema de comunicacion inalambrica. - Google Patents

Metodos y aparatos para configurar un simbolo piloto en un sistema de comunicacion inalambrica.

Info

Publication number
MX2009003198A
MX2009003198A MX2009003198A MX2009003198A MX2009003198A MX 2009003198 A MX2009003198 A MX 2009003198A MX 2009003198 A MX2009003198 A MX 2009003198A MX 2009003198 A MX2009003198 A MX 2009003198A MX 2009003198 A MX2009003198 A MX 2009003198A
Authority
MX
Mexico
Prior art keywords
pilot symbol
pseudo
random noise
methods
modulated
Prior art date
Application number
MX2009003198A
Other languages
English (en)
Inventor
Michael Mao Wang
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 MX2009003198A publication Critical patent/MX2009003198A/es

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • 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
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/27—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes using interleaving techniques
    • H03M13/2703—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes using interleaving techniques the interleaver involving at least two directions
    • H03M13/271—Row-column interleaver with permutations, e.g. block interleaving with inter-row, inter-column, intra-row or intra-column permutations
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/27—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes using interleaving techniques
    • H03M13/2771—Internal interleaver for turbo codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0041—Arrangements at the transmitter end
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0064—Concatenated codes
    • H04L1/0066—Parallel concatenated codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0071—Use of interleaving
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0224—Channel estimation using sounding signals
    • H04L25/0226—Channel estimation using sounding signals sounding signals per se
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/20—Modulator circuits; Transmitter circuits
    • 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
    • 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
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0078—Timing of allocation
    • H04L5/0082—Timing of allocation at predetermined intervals
    • H04L5/0083—Timing of allocation at predetermined intervals symbol-by-symbol
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0067—Rate matching
    • H04L1/0068—Rate matching by puncturing
    • H04L1/0069—Puncturing patterns
    • 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
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Probability & Statistics with Applications (AREA)
  • Theoretical Computer Science (AREA)
  • Power Engineering (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Error Detection And Correction (AREA)

Abstract

Se describen métodos y aparatos para construir un símbolo piloto para una trama de comunicación transmitida en un sistema de comunicación inalámbrica, como un sistema OFDM. En particular, los métodos y aparatos generan al menos una secuencia de ruido pseudoaleatoria que tiene al menos una longitud predeterminada, donde al menos una secuencia de ruido pseudoaleatoria representa una configuración de sistema de un sistema inalámbrico. Una secuencia de símbolos en el dominio del tiempo es modulada con al menos una secuencia de ruido pseudoaleatoria para crear una símbolo piloto de adquisición de temporización. El símbolo piloto de adquisición modulado es enmascarado además al perfil de frecuencia prescrito y colocado en una trama para la transmisión inalámbrica. En consecuencia, pueden ser comunicadas diferentes configuraciones de sistema de un transmisor a un receptor con el símbolo piloto de adquisición modulado con secuencias de ruido pseudoaleatorias diferentes, de manera correspondiente, dando a la vez la baja complejidad requerida para procesar el símbolo piloto de adquisición y una relación de potencia pico a promedio mínima cuando se usa modulación QPSK.
MX2009003198A 2006-09-27 2007-09-27 Metodos y aparatos para configurar un simbolo piloto en un sistema de comunicacion inalambrica. MX2009003198A (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/535,940 US8391410B2 (en) 2004-07-29 2006-09-27 Methods and apparatus for configuring a pilot symbol in a wireless communication system
PCT/US2007/079787 WO2008039952A1 (en) 2006-09-27 2007-09-27 Methods and apparatus for configuring a pilot symbol in a wireless communication system

Publications (1)

Publication Number Publication Date
MX2009003198A true MX2009003198A (es) 2009-04-07

Family

ID=39047617

Family Applications (1)

Application Number Title Priority Date Filing Date
MX2009003198A MX2009003198A (es) 2006-09-27 2007-09-27 Metodos y aparatos para configurar un simbolo piloto en un sistema de comunicacion inalambrica.

Country Status (14)

Country Link
US (1) US8391410B2 (es)
EP (1) EP2074786A1 (es)
JP (1) JP4991866B2 (es)
KR (1) KR101088189B1 (es)
CN (2) CN101518011B (es)
AU (1) AU2007300037B2 (es)
BR (1) BRPI0717268A2 (es)
CA (1) CA2662687A1 (es)
IL (1) IL197354A0 (es)
MX (1) MX2009003198A (es)
NO (1) NO20091194L (es)
RU (1) RU2406246C1 (es)
TW (1) TWI390918B (es)
WO (1) WO2008039952A1 (es)

Families Citing this family (44)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7363039B2 (en) * 2002-08-08 2008-04-22 Qualcomm Incorporated Method of creating and utilizing diversity in multiple carrier communication system
US8190163B2 (en) * 2002-08-08 2012-05-29 Qualcomm Incorporated Methods and apparatus of enhanced coding in multi-user communication systems
US6961595B2 (en) * 2002-08-08 2005-11-01 Flarion Technologies, Inc. Methods and apparatus for operating mobile nodes in multiple states
CA2516359C (en) * 2003-02-19 2013-03-19 Flarion Technologies, Inc. Methods and apparatus of enhanced coding in multi-user communications systems
US8593932B2 (en) * 2003-05-16 2013-11-26 Qualcomm Incorporated Efficient signal transmission methods and apparatus using a shared transmission resource
US7925291B2 (en) * 2003-08-13 2011-04-12 Qualcomm Incorporated User specific downlink power control channel Q-bit
US7221680B2 (en) 2003-09-02 2007-05-22 Qualcomm Incorporated Multiplexing and transmission of multiple data streams in a wireless multi-carrier 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
CN101032110B (zh) * 2004-07-29 2012-05-09 高通股份有限公司 用于进行交织的系统和方法
US20070081484A1 (en) * 2004-07-29 2007-04-12 Wang Michael M Methods and apparatus for transmitting a frame structure in a wireless communication system
US8391410B2 (en) 2004-07-29 2013-03-05 Qualcomm Incorporated Methods and apparatus for configuring a pilot symbol in a wireless communication 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
US20070211669A1 (en) * 2006-03-07 2007-09-13 Bhupesh Manoharlal Umatt Method and apparatus for searching radio technologies
WO2007132912A1 (ja) * 2006-05-17 2007-11-22 Nec Corporation ターボ符号器及びそれに用いるｈａｒｑ処理方法
KR100877750B1 (ko) 2006-12-27 2009-01-12 포스데이타 주식회사 직교주파수 분할 다중 접속 시스템의 파일럿 톤 생성 방법및 장치와 이를 이용한 채널추정 방법 및 장치
US8755313B2 (en) 2007-01-11 2014-06-17 Qualcomm Incorporated Using DTX and DRX in a wireless communication system
US8169956B2 (en) 2007-01-26 2012-05-01 Qualcomm Incorporated Mapping uplink acknowledgement transmission based on downlink virtual resource blocks
JP5635265B2 (ja) 2007-04-13 2014-12-03 ジーブイビービー ホールディングス エス．エイ．アール．エル． 編集装置および編集方法
KR101414758B1 (ko) * 2007-07-03 2014-10-01 삼성전자주식회사 데이터 송수신 장치
US8848913B2 (en) 2007-10-04 2014-09-30 Qualcomm Incorporated Scrambling sequence generation in a communication system
US8787181B2 (en) * 2008-01-14 2014-07-22 Qualcomm Incorporated Resource allocation randomization
EP2104295B3 (en) 2008-03-17 2018-04-18 LG Electronics Inc. Reference signal generation using gold sequences
US8923249B2 (en) * 2008-03-26 2014-12-30 Qualcomm Incorporated Method and apparatus for scrambling sequence generation in a communication system
FR2944171B1 (fr) * 2009-04-03 2012-12-21 Get Enst Procede et dispositif de modulation mettant en oeuvre une modulation differentielle, procede et dispositif de demodulation, signal et produits programme d'ordinateur correspondants.
EP2424143A1 (en) * 2009-04-24 2012-02-29 Panasonic Corporation Wireless communication device and wireless communication method
EP2432148B1 (en) * 2009-05-13 2019-07-03 Panasonic Intellectual Property Corporation of America Radio communication device and radio communication method
US8331495B2 (en) * 2009-08-17 2012-12-11 Telefonaktiebolaget L M Ericsson (Publ) Method and apparatus for an improved wireless communication receiver
US8325833B2 (en) * 2009-12-21 2012-12-04 Intel Corporation Interlaced symbol constellation mapping for wireless communication
US8665697B1 (en) * 2009-12-23 2014-03-04 Kbc Research Foundation Pvt. Ltd. Subchannel formation in OFDMA systems
US8169887B2 (en) * 2009-12-29 2012-05-01 Industrial Technology Research Institute Apparatuses and methods for wireless communications using a permutation sequence
US9237526B2 (en) 2010-03-12 2016-01-12 Sunrise Micro Devices, Inc. Power efficient communications
RU2459359C1 (ru) * 2011-08-25 2012-08-20 Федеральное государственное автономное образовательное учреждение высшего профессионального образования "Белгородский государственный национальный исследовательский университет" Способ формирования канальных сигналов и устройство его реализующее
JP6509890B2 (ja) * 2013-11-11 2019-05-08 エルジー エレクトロニクス インコーポレイティド 放送信号送信装置、放送信号受信装置、放送信号送信方法及び放送信号受信方法
GB2523363B (en) * 2014-02-21 2017-06-28 Samsung Electronics Co Ltd Bit interleaver and bit de-interleaver
US9949259B2 (en) * 2015-05-07 2018-04-17 Qualcomm Incorporated System and method for transmitting data payload in WB SC, aggregate SC, duplicate SC, OFDM transmission frames
US10181923B2 (en) * 2015-10-30 2019-01-15 Motorola Mobility Llc Apparatus and method for generating and using a pilot signal
US9712348B1 (en) * 2016-01-15 2017-07-18 Avago Technologies General Ip (Singapore) Pte. Ltd. System, device, and method for shaping transmit noise
US10469199B2 (en) * 2016-09-09 2019-11-05 Viavi Solutions Inc. Forward error correction with optical and electrical transponder
US11329750B2 (en) * 2019-06-07 2022-05-10 Qualcomm Incorporated Sequence transmission for sidelink communications
JP6853863B1 (ja) * 2019-10-03 2021-03-31 シャープ株式会社 端末装置、基地局装置、および、通信方法
US11012211B2 (en) * 2019-10-07 2021-05-18 Jaihyung Cho Method for transmitting reference signal and apparatus using the same
CN112187696B (zh) * 2020-10-26 2021-12-28 上海交通大学 帧信号传输方法及系统

Family Cites Families (109)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4672605A (en) 1984-03-20 1987-06-09 Applied Spectrum Technologies, Inc. Data and voice communications system
SU1327296A1 (ru) 1985-06-11 1987-07-30 Минский радиотехнический институт Сверточный кодек с алгоритмом порогового декодировани
US5177766A (en) * 1991-06-03 1993-01-05 Spectralink Corporation Digital clock timing generation in a spread-spectrum digital communication system
US5315592A (en) 1992-04-23 1994-05-24 Xyplex Inc. Parallel bridging
US6154484A (en) * 1995-09-06 2000-11-28 Solana Technology Development Corporation Method and apparatus for embedding auxiliary data in a primary data signal using frequency and time domain processing
FI955113A (fi) * 1995-10-26 1997-04-27 Nokia Mobile Phones Ltd Tiedonsiirtomenetelmä, lähetin ja vastaanotin
FR2742612B1 (fr) 1995-12-15 1998-02-06 Sextant Avionique Procede et circuit de reception de signaux de positionnement par satellites avec elimination des erreurs de multitrajets
JP2907104B2 (ja) 1996-03-27 1999-06-21 日本電気株式会社 時間ダイバーシティ通信方法及び通信装置
KR100186627B1 (ko) 1996-09-21 1999-05-15 삼성전자 주식회사 베이스 밴드 인터리버
KR100193846B1 (ko) 1996-10-02 1999-06-15 윤종용 인터리브 리드 어드레스 생성기
KR100221336B1 (ko) 1996-12-28 1999-09-15 전주범 직교 주파수 분할 다중화 수신 시스템의 프레임 동기 장치 및 그 방법
US6243379B1 (en) 1997-04-04 2001-06-05 Ramp Networks, Inc. Connection and packet level multiplexing between network links
US6421333B1 (en) * 1997-06-21 2002-07-16 Nortel Networks Limited Channel coding and interleaving for transmission on a multicarrier system
CA2245603C (en) * 1997-08-14 2011-06-28 Stewart Crozier Method of enhanced max-log-a posteriori probability processing
US6208663B1 (en) * 1997-08-29 2001-03-27 Telefonaktiebolaget Lm Ericsson (Publ) Method and system for block ARQ with reselection of FEC coding and/or modulation
US6026117A (en) * 1997-10-23 2000-02-15 Interdigital Technology Corporation Method and apparatus for generating complex four-phase sequences for a CDMA communication system
EP0938208A1 (en) 1998-02-22 1999-08-25 Sony International (Europe) GmbH Multicarrier transmission, compatible with the existing GSM system
JP2961105B1 (ja) 1998-06-19 1999-10-12 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 Ｏｆｄｍ受信装置
JP2958308B1 (ja) 1998-07-10 1999-10-06 松下電器産業株式会社 インターリーブ解除装置
KR100900059B1 (ko) 1998-07-27 2009-06-01 코닌클리케 필립스 일렉트로닉스 엔.브이. 인코딩 장치 및 디코딩 장치, 인코딩 및 디코딩 방법
US6298463B1 (en) * 1998-07-31 2001-10-02 Nortel Networks Limited Parallel concatenated convolutional coding
US6798736B1 (en) * 1998-09-22 2004-09-28 Qualcomm Incorporated Method and apparatus for transmitting and receiving variable rate data
IL137702A0 (en) 1998-12-04 2001-10-31 U S Wireless Corp Wireless location determination using spatial signature information
KR100306282B1 (ko) 1998-12-10 2001-11-02 윤종용 통신시스템의인터리빙/디인터리빙장치및방법
BE1012331A3 (nl) 1998-12-11 2000-09-05 Steveninck Etienne Werkwijze en inrichting voor het aanbrengen van reflecterend materiaal op een substraat.
US6611551B1 (en) * 1999-01-21 2003-08-26 Cisco Technology, Inc. OFDM channel identification
US6304581B1 (en) * 1999-02-16 2001-10-16 Motorola, Inc. Interleaving method and apparatus for orthogonal transmit diversity and multi-carriers CDMA communication systems
BR0008530B1 (pt) 1999-02-25 2014-02-04 Aparelho de difusão digital
KR100342565B1 (ko) * 1999-04-20 2002-07-04 윤종용 코드분할 다중접속 시스템의 단말기에서 단절된 호 복원 방법및 그 통보 방법
US6311306B1 (en) 1999-04-26 2001-10-30 Motorola, Inc. System for error control by subdividing coded information units into subsets reordering and interlacing the subsets, to produce a set of interleaved coded information units
DE60029181T2 (de) * 1999-05-10 2007-05-31 Ntt Docomo, Inc. Multiplexverfahren und multiplexvorrichtung sowie verfahren und vorrichtung zur übertragung von datensignalen
US6473878B1 (en) 1999-05-28 2002-10-29 Lucent Technologies Inc. Serial-concatenated turbo codes
EP1055941B1 (en) * 1999-05-28 2006-10-04 Mitsubishi Denki Kabushiki Kaisha Coherent laser radar apparatus and radar/optical communication system
CN100391122C (zh) 1999-07-08 2008-05-28 三星电子株式会社 移动通信系统中用于控制速率匹配的去复用器和复用器的设备和方法
FR2797122B1 (fr) * 1999-07-30 2006-08-04 Commissariat Energie Atomique Procede de transmission de donnees utilisant des jeux repetitifs de sequences d'etalement, emetteur et recepteur correspondants
US6747948B1 (en) * 1999-08-11 2004-06-08 Lucent Technologies Inc. Interleaver scheme in an OFDM system with multiple-stream data sources
US6631125B1 (en) 1999-10-20 2003-10-07 Nokia Corporation Channel set-up in wideband, code division multiple access systems
US6697990B2 (en) * 1999-12-15 2004-02-24 Hughes Electronics Corporation Interleaver design for parsed parallel concatenated codes
IT1314319B1 (it) 1999-12-23 2002-12-09 Siemens Inf & Comm Networks Metodo di interlacciamento di un flusso di bit in un sistema ditelefonia radiomobile
JP2001217861A (ja) 2000-01-31 2001-08-10 Kddi Corp いたずらメール防止システム及びメールセンタ装置
JP3568873B2 (ja) 2000-03-22 2004-09-22 株式会社エヌ・ティ・ティ・ドコモ マルチキャリア無線伝送システムにおけるチャネル推定方法及び装置
KR100499467B1 (ko) 2000-03-10 2005-07-07 엘지전자 주식회사 블록 인터리빙 방법 및 그를 위한 장치
JP3976474B2 (ja) 2000-05-12 2007-09-19 三洋電機株式会社 Ｏｆｄｍ復調装置
US7120696B1 (en) * 2000-05-19 2006-10-10 Stealthkey, Inc. Cryptographic communications using pseudo-randomly generated cryptography keys
JP3995390B2 (ja) 2000-05-26 2007-10-24 三洋電機株式会社 デジタル放送受信装置
JP2002057640A (ja) 2000-08-09 2002-02-22 Sony Corp 地上デジタル放送送受信システム及び地上デジタル放送受信装置
US6985434B2 (en) * 2000-09-01 2006-01-10 Nortel Networks Limited Adaptive time diversity and spatial diversity for OFDM
JP2002111621A (ja) 2000-09-28 2002-04-12 Sanyo Electric Co Ltd デジタル信号受信装置
US6754170B1 (en) * 2000-09-29 2004-06-22 Symbol Technologies, Inc. Timing synchronization in OFDM communications receivers
US6961388B2 (en) 2001-02-01 2005-11-01 Qualcomm, Incorporated Coding scheme for a wireless communication system
CN1268062C (zh) 2001-02-13 2006-08-02 三星电子株式会社 在通信系统中生成代码的设备和方法
US7248652B2 (en) * 2001-02-28 2007-07-24 Agere Systems Inc. Method and apparatus for recovering timing information in orthogonal frequency division multiplexing (OFDM) systems
US7170849B1 (en) * 2001-03-19 2007-01-30 Cisco Systems Wireless Networking (Australia) Pty Limited Interleaver, deinterleaver, interleaving method, and deinterleaving method for OFDM data
US7209461B2 (en) * 2001-05-09 2007-04-24 Qualcomm Incorporated Method and apparatus for chip-rate processing in a CDMA system
US6392572B1 (en) * 2001-05-11 2002-05-21 Qualcomm Incorporated Buffer architecture for a turbo decoder
US7272769B1 (en) 2001-06-05 2007-09-18 Broadcom Corporation System and method for interleaving data in a wireless transmitter
US6807428B2 (en) 2001-08-16 2004-10-19 Qualcomm, Incorporated Method and apparatus for time-based reception of transmissions in a wireless communication system
US6738370B2 (en) * 2001-08-22 2004-05-18 Nokia Corporation Method and apparatus implementing retransmission in a communication system providing H-ARQ
JP3911401B2 (ja) 2001-10-16 2007-05-09 株式会社ケンウッド 周波数インターリーブ装置、周波数インターリーブ方法、周波数デインターリーブ装置、および、周波数デインターリーブ方法
US7349667B2 (en) 2001-10-19 2008-03-25 Texas Instruments Incorporated Simplified noise estimation and/or beamforming for wireless communications
US7039000B2 (en) * 2001-11-16 2006-05-02 Mitsubishi Electric Research Laboratories, Inc. Timing synchronization for OFDM-based wireless networks
US7154936B2 (en) 2001-12-03 2006-12-26 Qualcomm, Incorporated Iterative detection and decoding for a MIMO-OFDM system
JP3883432B2 (ja) 2001-12-18 2007-02-21 富士通株式会社 Ｏｆｄｍ受信装置及び放送受信装置
US7406065B2 (en) * 2002-03-14 2008-07-29 Qualcomm, Incorporated Method and apparatus for reducing inter-channel interference in a wireless communication system
AU2003236035A1 (en) 2002-04-12 2003-10-27 Matsushita Electric Industrial Co., Ltd. Multi-carrier communication device and multi-carrier communication method
JP3679775B2 (ja) 2002-04-12 2005-08-03 松下電器産業株式会社 マルチキャリア送信装置、マルチキャリア受信装置及びマルチキャリア送信方法
US7251768B2 (en) 2002-04-22 2007-07-31 Regents Of The University Of Minnesota Wireless communication system having error-control coder and linear precoder
TWI244349B (en) 2002-05-01 2005-11-21 Interdigital Tech Corp Point to multi-point services using high speed shared channels in wireless communication systems
US7289459B2 (en) * 2002-08-07 2007-10-30 Motorola Inc. Radio communication system with adaptive interleaver
AU2002319335B2 (en) 2002-08-13 2008-12-04 Nokia Corporation Symbol interleaving
US7002900B2 (en) 2002-10-25 2006-02-21 Qualcomm Incorporated Transmit diversity processing for a multi-antenna communication system
US6985745B2 (en) 2002-11-25 2006-01-10 Telefonaktiebolaget L M Ericsson (Publ) Method and radio signature position determining entity (RS-PDE) for maintaining location database reliability
WO2004053684A2 (en) * 2002-12-12 2004-06-24 Arm Limited Processing activity masking in a data processing system
US7031251B2 (en) 2003-02-12 2006-04-18 Hangjun Chen Clipping distortion canceller for OFDM signals
WO2004082200A1 (en) 2003-03-10 2004-09-23 Docomo Communications Laboratories Europe Gmbh Apparatus and method for detecting a group of received symbols
EP1609283A1 (en) * 2003-03-28 2005-12-28 Intel Corporation Method and apparatus for ofdm symbol timing synchronization
RU2248097C2 (ru) 2003-04-01 2005-03-10 Федеральное государственное унитарное предприятие "Воронежский научно-исследовательский институт связи" Система передачи информации
US7324590B2 (en) 2003-05-28 2008-01-29 Qualcomm Incoporated Equalizer with combined CCK encoding-decoding in feedback filtering of decision feedback equalizer
US7457350B2 (en) * 2003-07-18 2008-11-25 Artimi Ltd. Communications systems and methods
US20050016201A1 (en) 2003-07-22 2005-01-27 Ivanov Igor C. Multi-staged heating system for fabricating microelectronic devices
US8526412B2 (en) 2003-10-24 2013-09-03 Qualcomm Incorporated Frequency division multiplexing of multiple data streams in a wireless multi-carrier communication system
US7660275B2 (en) * 2003-10-24 2010-02-09 Qualcomm Incorporated Local and wide-area transmissions in a wireless broadcast network
TWI228893B (en) 2003-10-31 2005-03-01 Benq Corp Wireless network synchronization system and method
US7145940B2 (en) * 2003-12-05 2006-12-05 Qualcomm Incorporated Pilot transmission schemes for a multi-antenna system
US20050135517A1 (en) * 2003-12-22 2005-06-23 Texas Instruments Incorporated Increasing effective number of data tones in a multi-antenna multi-tone communication system
US7398091B2 (en) 2004-02-02 2008-07-08 Motorola, Inc. Method and apparatus for providing a multimedia broadcast/multicast service in a visited network
US8077691B2 (en) * 2004-03-05 2011-12-13 Qualcomm Incorporated Pilot transmission and channel estimation for MISO and MIMO receivers in a multi-antenna system
CN1655545A (zh) * 2004-03-29 2005-08-17 上海交通大学 一种oqam传输系统中的双导频信号生成方法
US7411898B2 (en) * 2004-05-10 2008-08-12 Infineon Technologies Ag Preamble generator for a multiband OFDM transceiver
US7693124B2 (en) * 2004-05-18 2010-04-06 Qualcomm Incorporated Slot-to-interlace and interlace-to-slot converters for an OFDM system
US8068530B2 (en) * 2004-06-18 2011-11-29 Qualcomm Incorporated Signal acquisition in a wireless communication system
US7298787B2 (en) * 2004-06-25 2007-11-20 Nokia Corporation System, and associated method, for facilitating broadband multi-carrier transmission
CN1725652A (zh) * 2004-07-19 2006-01-25 上海乐金广电电子有限公司 利用码分技术的信号发送/接收装置
US20070081484A1 (en) * 2004-07-29 2007-04-12 Wang Michael M Methods and apparatus for transmitting a frame structure in a wireless communication system
US20080317142A1 (en) * 2005-07-29 2008-12-25 Qualcomm Incorporated System and method for frequency diversity
CN101032110B (zh) 2004-07-29 2012-05-09 高通股份有限公司 用于进行交织的系统和方法
US8391410B2 (en) 2004-07-29 2013-03-05 Qualcomm Incorporated Methods and apparatus for configuring a pilot symbol in a wireless communication system
US7924770B2 (en) 2004-08-06 2011-04-12 Nokia Corporation Method of controlling communication between two nodes in a communication system
WO2006043312A1 (ja) * 2004-10-19 2006-04-27 Matsushita Electric Industrial Co., Ltd. 受信機及び衝突検知方法
US7852822B2 (en) * 2004-12-22 2010-12-14 Qualcomm Incorporated Wide area and local network ID transmission for communication systems
US8526400B2 (en) 2005-02-15 2013-09-03 Apple Inc. Radio access system and method using OFDM and CDMA for broadband data transmission
US7813383B2 (en) 2005-03-10 2010-10-12 Qualcomm Incorporated Method for transmission of time division multiplexed pilot symbols to aid channel estimation, time synchronization, and AGC bootstrapping in a multicast wireless system
RU2379847C2 (ru) 2005-03-10 2010-01-20 Квэлкомм Инкорпорейтед Синхронизация хронирования и оценка канала при переходе между локальными и глобальными формами сигнала с использованием назначенного пилот-сигнала tdm
US7756005B2 (en) * 2005-03-11 2010-07-13 Qualcomm Incorporated Coarse timing/frame acquisition of OFDM system using time division multiplexed pilot symbol
US20070025738A1 (en) * 2005-07-28 2007-02-01 Artimi Inc. Communications systems and methods
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
US7702046B2 (en) * 2006-04-03 2010-04-20 Qualcomm Incorporated Method and system for automatic gain control during signal acquisition
KR200461482Y1 (ko) 2010-12-20 2012-07-16 (주)아모레퍼시픽 피지제거용 빗

Also Published As

Publication number Publication date
RU2406246C1 (ru) 2010-12-10
CN101518011A (zh) 2009-08-26
CN105207760A (zh) 2015-12-30
CA2662687A1 (en) 2008-04-03
TWI390918B (zh) 2013-03-21
US20070082696A1 (en) 2007-04-12
JP2010505372A (ja) 2010-02-18
EP2074786A1 (en) 2009-07-01
KR20090057327A (ko) 2009-06-04
AU2007300037A1 (en) 2008-04-03
KR101088189B1 (ko) 2011-11-30
WO2008039952A1 (en) 2008-04-03
US8391410B2 (en) 2013-03-05
BRPI0717268A2 (pt) 2013-10-22
JP4991866B2 (ja) 2012-08-01
CN101518011B (zh) 2017-03-29
NO20091194L (no) 2009-04-24
TW200833036A (en) 2008-08-01
AU2007300037B2 (en) 2010-11-18
IL197354A0 (en) 2009-12-24

Similar Documents

Publication Publication Date Title
MX2009003198A (es) Metodos y aparatos para configurar un simbolo piloto en un sistema de comunicacion inalambrica.
WO2007002033A3 (en) Pilot design and channel estimation
TW200637287A (en) Method and apparatus for communication in a system employing differing transmission protocols
WO2012131600A3 (en) Transmitter and receiver synchronization for wireless telemetry systems
WO2007084988A3 (en) Method and apparatus for pilot multiplexing in a wireless communication system
MX2019004632A (es) Combinacion optimizada de preambulo y campos de datos para redes de sensores que tienen bajo consumo de electricidad con base en el metodo de division de telegrama.
GB0915399D0 (en) Method of transmitting control signals in wireless communication system
WO2010016662A3 (en) Radio access method for reduced papr
CA2727541A1 (en) Featureless coherent chaotic amplitude modulation
TW200642331A (en) Methods and apparatus for mitigating multi-antenna correlation effect in communication systems
WO2011053836A3 (en) Method and apparatus for mutiplexing reference signal and data in a wireless communication system
MX2010009058A (es) Metodo para transmision de enlace ascendente en sistema de ofdm (a).
WO2007021384A3 (en) Method and apparatus for pilot signal transmission
WO2005117384A3 (en) Multicarrier communication apparatus, system and method with reduced radiation power
WO2005036847A3 (en) An apparatus and associated methods to implement a high throughput wireless communication system
TW200711429A (en) Transmitter, receiver, mobile communication system and synchronization channel transmission method
TW200729796A (en) Frequency division multiple access schemes for wireless communication
UA91509C2 (ru) Система модуляции с множеством несущих с разнесением циклических задержек
WO2010068029A3 (en) Reference signal transmission method for downlink multiple input multiple output system
WO2008050995A3 (en) Method for transmitting data using cyclic delay diversity
WO2010047787A3 (en) Method and apparatus for generating a preamble for use in cable transmission systems
SG169344A1 (en) Base station apparatus, mobile station apparatus, and synchronization channel transmission method
MX2009007039A (es) Transmision de pilotos en un sistema de comunicaciones inalambricas.
WO2015028684A3 (en) A method for generating a built symbol for papr reduction and a method for demodulating a received symbol
WO2009134061A3 (en) Apparatus and method for reducing papr of preamble signal in digital broadcasting system

Legal Events

Date Code Title Description
FA Abandonment or withdrawal