BR9711898B1 - processo e aparelho para geração de um sinal de referência demodulado a partir de um sinal com desvio de fase em uma estação base de um sistema de comunicação sem fio. - Google Patents
processo e aparelho para geração de um sinal de referência demodulado a partir de um sinal com desvio de fase em uma estação base de um sistema de comunicação sem fio.Info
- Publication number
- BR9711898B1 BR9711898B1 BRPI9711898-2A BR9711898A BR9711898B1 BR 9711898 B1 BR9711898 B1 BR 9711898B1 BR 9711898 A BR9711898 A BR 9711898A BR 9711898 B1 BR9711898 B1 BR 9711898B1
- Authority
- BR
- Brazil
- Prior art keywords
- base station
- reference signal
- generating
- wireless communication
- communication system
- Prior art date
Links
Classifications
-
- 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
- H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
- H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
-
- 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
- H04L27/22—Demodulator circuits; Receiver circuits
- H04L27/233—Demodulator circuits; Receiver circuits using non-coherent demodulation
- H04L27/2332—Demodulator circuits; Receiver circuits using non-coherent demodulation using a non-coherent carrier
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0014—Carrier regulation
- H04L2027/0024—Carrier regulation at the receiver end
- H04L2027/0026—Correction of carrier offset
- H04L2027/003—Correction of carrier offset at baseband only
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0014—Carrier regulation
- H04L2027/0044—Control loops for carrier regulation
- H04L2027/0046—Open loops
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0014—Carrier regulation
- H04L2027/0083—Signalling arrangements
- H04L2027/0089—In-band signals
- H04L2027/0093—Intermittant signals
- H04L2027/0095—Intermittant signals in a preamble or similar structure
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Radio Transmission System (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/729,390 US5909470A (en) | 1996-10-11 | 1996-10-11 | Method and apparatus for decision directed demodulation using antenna arrays and spatial processing |
PCT/US1997/018745 WO1998017037A1 (en) | 1996-10-11 | 1997-10-10 | Method and apparatus for decision directed demodulation using antenna arrays and spatial processing |
Publications (2)
Publication Number | Publication Date |
---|---|
BR9711898A BR9711898A (pt) | 1999-08-24 |
BR9711898B1 true BR9711898B1 (pt) | 2011-03-09 |
Family
ID=24930817
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BRPI9711898-2A BR9711898B1 (pt) | 1996-10-11 | 1997-10-10 | processo e aparelho para geração de um sinal de referência demodulado a partir de um sinal com desvio de fase em uma estação base de um sistema de comunicação sem fio. |
Country Status (10)
Country | Link |
---|---|
US (1) | US5909470A (pt) |
EP (1) | EP0951770B1 (pt) |
JP (1) | JP4364946B2 (pt) |
CN (1) | CN1290299C (pt) |
AT (1) | ATE304771T1 (pt) |
AU (1) | AU4906697A (pt) |
BR (1) | BR9711898B1 (pt) |
CA (1) | CA2268262A1 (pt) |
DE (1) | DE69734208T2 (pt) |
WO (1) | WO1998017037A1 (pt) |
Families Citing this family (55)
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US5579341A (en) * | 1994-12-29 | 1996-11-26 | Motorola, Inc. | Multi-channel digital transceiver and method |
US6463295B1 (en) | 1996-10-11 | 2002-10-08 | Arraycomm, Inc. | Power control with signal quality estimation for smart antenna communication systems |
US6275543B1 (en) * | 1996-10-11 | 2001-08-14 | Arraycomm, Inc. | Method for reference signal generation in the presence of frequency offsets in a communications station with spatial processing |
US7035661B1 (en) * | 1996-10-11 | 2006-04-25 | Arraycomm, Llc. | Power control with signal quality estimation for smart antenna communication systems |
US6122260A (en) * | 1996-12-16 | 2000-09-19 | Civil Telecommunications, Inc. | Smart antenna CDMA wireless communication system |
US6876675B1 (en) * | 1998-02-06 | 2005-04-05 | Cisco Technology, Inc. | Synchronization in OFDM systems |
DE69824390T2 (de) * | 1998-04-01 | 2004-10-28 | Motorola Semiconducteurs S.A. | Kommunikationsanordnung, mobile Einrichtung und Verfahren |
US6615024B1 (en) * | 1998-05-01 | 2003-09-02 | Arraycomm, Inc. | Method and apparatus for determining signatures for calibrating a communication station having an antenna array |
AT407933B (de) * | 1998-06-09 | 2001-07-25 | Juha Dipl Ing Laurila | Verfahren zur trennung und zur detektion von gleichkanal-signalen |
US6700923B1 (en) * | 1999-01-04 | 2004-03-02 | Board Of Regents The University Of Texas System | Adaptive multiple access interference suppression |
US6177906B1 (en) * | 1999-04-01 | 2001-01-23 | Arraycomm, Inc. | Multimode iterative adaptive smart antenna processing method and apparatus |
US6600914B2 (en) | 1999-05-24 | 2003-07-29 | Arraycomm, Inc. | System and method for emergency call channel allocation |
US7139592B2 (en) * | 1999-06-21 | 2006-11-21 | Arraycomm Llc | Null deepening for an adaptive antenna based communication station |
AU1655001A (en) * | 1999-11-02 | 2001-05-14 | Broadcom Corporation | A method and apparatus for the detection and classification of collisions on a shared access rf network |
JP2001285189A (ja) * | 2000-04-03 | 2001-10-12 | Sanyo Electric Co Ltd | 無線基地局、プログラム記憶媒体 |
US6963548B1 (en) * | 2000-04-17 | 2005-11-08 | The Directv Group, Inc. | Coherent synchronization of code division multiple access signals |
JP4674030B2 (ja) * | 2000-04-26 | 2011-04-20 | インテル・コーポレーション | 適応型スマート・アンテナの処理法および装置 |
US8363744B2 (en) | 2001-06-10 | 2013-01-29 | Aloft Media, Llc | Method and system for robust, secure, and high-efficiency voice and packet transmission over ad-hoc, mesh, and MIMO communication networks |
US6930989B1 (en) | 2000-06-20 | 2005-08-16 | Cisco Technology, Inc. | Wide frequency offset correction using encoded interburst phase differences |
US6895217B1 (en) | 2000-08-21 | 2005-05-17 | The Directv Group, Inc. | Stratospheric-based communication system for mobile users having adaptive interference rejection |
US7317916B1 (en) | 2000-09-14 | 2008-01-08 | The Directv Group, Inc. | Stratospheric-based communication system for mobile users using additional phased array elements for interference rejection |
US6795409B1 (en) | 2000-09-29 | 2004-09-21 | Arraycomm, Inc. | Cooperative polling in a wireless data communication system having smart antenna processing |
US6650714B2 (en) | 2000-11-30 | 2003-11-18 | Arraycomm, Inc. | Spatial processing and timing estimation using a training sequence in a radio communications system |
AU770602B2 (en) * | 2000-10-05 | 2004-02-26 | Samsung Electronics Co., Ltd. | TSTD apparatus and method for a TDD CDMA mobile communication system |
US6798853B1 (en) * | 2000-11-15 | 2004-09-28 | Telefonaktiebolaget Lm Ericsson (Publ) | System and method for compensating for frequency offset |
US6801589B1 (en) * | 2000-11-30 | 2004-10-05 | Arraycomm, Inc. | Relative timing acquisition for a radio communications system |
DE60137961D1 (de) | 2000-11-30 | 2009-04-23 | Arraycomm Llc | Trainingsfolge für ein funkkommunikationssystem |
US6650881B1 (en) | 2000-11-30 | 2003-11-18 | Arraycomm, Inc. | Calculating spatial weights in a radio communications system |
US6768747B1 (en) | 2000-11-30 | 2004-07-27 | Arraycomm, Inc. | Relative and absolute timing acquisition for a radio communications system |
US6891813B2 (en) | 2000-12-12 | 2005-05-10 | The Directv Group, Inc. | Dynamic cell CDMA code assignment system and method |
US8396513B2 (en) * | 2001-01-19 | 2013-03-12 | The Directv Group, Inc. | Communication system for mobile users using adaptive antenna |
US7187949B2 (en) * | 2001-01-19 | 2007-03-06 | The Directv Group, Inc. | Multiple basestation communication system having adaptive antennas |
US7809403B2 (en) | 2001-01-19 | 2010-10-05 | The Directv Group, Inc. | Stratospheric platforms communication system using adaptive antennas |
US6961545B2 (en) * | 2001-04-09 | 2005-11-01 | Atheros Communications, Inc. | Method and system for providing antenna diversity |
FR2825551B1 (fr) * | 2001-05-30 | 2003-09-19 | Wavecom Sa | Procede d'estimation de la fonction de transfert d'un canal de transmission d'un signal multiporteuse, procede de reception d'un signal numerique, et recepteur d'un signal multiporteuse correspondants |
US7104534B2 (en) | 2001-06-08 | 2006-09-12 | Broadcom Corporation | System and method for detecting collisions in a shared communications medium |
US7860205B1 (en) * | 2001-09-18 | 2010-12-28 | Ciena Corporation | Clock synchronization using a weighted least squares error filtering technique |
US7006587B1 (en) | 2001-11-20 | 2006-02-28 | Cisco Technolgy, Inc. | Preamble aided synchronization |
KR100493026B1 (ko) * | 2002-09-09 | 2005-06-07 | 삼성전자주식회사 | 전화선 모뎀을 위한 강건한 심벌 타이밍 복구 회로 |
AU2002333901A1 (en) * | 2002-10-10 | 2004-05-04 | Nokia Corporation | Channel estimation using expectation maximisation for space-time communications systems |
KR100761420B1 (ko) | 2002-10-25 | 2007-09-27 | 어레이컴, 엘엘씨 | 적응성 스마트 안테나 처리 방법 및 장치 |
JP4323873B2 (ja) * | 2003-06-13 | 2009-09-02 | 富士通株式会社 | 入出力インタフェース回路 |
US20050111427A1 (en) * | 2003-11-21 | 2005-05-26 | Qinghua Li | SDMA training and operation |
US7263335B2 (en) | 2004-07-19 | 2007-08-28 | Purewave Networks, Inc. | Multi-connection, non-simultaneous frequency diversity in radio communication systems |
US7460839B2 (en) | 2004-07-19 | 2008-12-02 | Purewave Networks, Inc. | Non-simultaneous frequency diversity in radio communication systems |
JP4338624B2 (ja) * | 2004-12-07 | 2009-10-07 | 三洋電機株式会社 | 周波数オフセット推定方法およびそれを利用した周波数オフセット補正装置 |
US7853216B1 (en) | 2005-12-22 | 2010-12-14 | Atheros Communications, Inc. | Multi-channel RX/TX calibration and local oscillator mismatch mitigation |
CN1960511B (zh) * | 2006-09-01 | 2010-05-26 | Ut斯达康(中国)有限公司 | 在个人便携电话系统中实现半速率业务的空中接口方法 |
CN101884170B (zh) * | 2008-01-21 | 2014-07-09 | 日本电气株式会社 | 通信设备、通信系统及控制方法 |
JP4898897B2 (ja) * | 2009-12-22 | 2012-03-21 | インターナショナル・ビジネス・マシーンズ・コーポレーション | タイミング相関値を用いた周波数オフセットによるデータのずれの補償 |
CN102571170B (zh) * | 2011-12-23 | 2014-11-19 | 北京遥测技术研究所 | 一种实时校准上行天线组阵链路变化的方法 |
GB202002985D0 (en) * | 2020-03-02 | 2020-04-15 | Institute Of Science And Tech Austria Ist Austria | Demodulator, and method of demodulating a signal |
CN115242367B (zh) * | 2021-04-25 | 2023-07-25 | 中国科学院沈阳自动化研究所 | 面向工业无线信道脉冲响应的数据误差矫正方法 |
CN114338476B (zh) * | 2022-03-15 | 2022-06-03 | 北京金橙子科技股份有限公司 | 基于脉冲编码测量的通信波特率检测和地址分配的方法 |
CN115277344B (zh) * | 2022-06-29 | 2023-08-18 | 西北工业大学 | 一种基于松弛相位约束的鲁棒方向调制安全传输方法 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4965732A (en) * | 1985-11-06 | 1990-10-23 | The Board Of Trustees Of The Leland Stanford Junior University | Methods and arrangements for signal reception and parameter estimation |
US5546090A (en) * | 1991-12-12 | 1996-08-13 | Arraycomm, Inc. | Method and apparatus for calibrating antenna arrays |
US5515378A (en) * | 1991-12-12 | 1996-05-07 | Arraycomm, Inc. | Spatial division multiple access wireless communication systems |
US5592490A (en) * | 1991-12-12 | 1997-01-07 | Arraycomm, Inc. | Spectrally efficient high capacity wireless communication systems |
-
1996
- 1996-10-11 US US08/729,390 patent/US5909470A/en not_active Expired - Lifetime
-
1997
- 1997-10-10 CN CN97198739.4A patent/CN1290299C/zh not_active Expired - Lifetime
- 1997-10-10 AU AU49066/97A patent/AU4906697A/en not_active Abandoned
- 1997-10-10 WO PCT/US1997/018745 patent/WO1998017037A1/en active IP Right Grant
- 1997-10-10 JP JP51860198A patent/JP4364946B2/ja not_active Expired - Fee Related
- 1997-10-10 BR BRPI9711898-2A patent/BR9711898B1/pt not_active IP Right Cessation
- 1997-10-10 EP EP97911768A patent/EP0951770B1/en not_active Expired - Lifetime
- 1997-10-10 CA CA002268262A patent/CA2268262A1/en not_active Abandoned
- 1997-10-10 DE DE69734208T patent/DE69734208T2/de not_active Expired - Lifetime
- 1997-10-10 AT AT97911768T patent/ATE304771T1/de not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
BR9711898A (pt) | 1999-08-24 |
ATE304771T1 (de) | 2005-09-15 |
EP0951770A4 (en) | 2002-04-17 |
WO1998017037A1 (en) | 1998-04-23 |
US5909470A (en) | 1999-06-01 |
CN1233367A (zh) | 1999-10-27 |
CA2268262A1 (en) | 1998-04-23 |
AU4906697A (en) | 1998-05-11 |
JP2001502502A (ja) | 2001-02-20 |
DE69734208T2 (de) | 2006-06-22 |
JP4364946B2 (ja) | 2009-11-18 |
EP0951770A1 (en) | 1999-10-27 |
DE69734208D1 (de) | 2005-10-20 |
EP0951770B1 (en) | 2005-09-14 |
CN1290299C (zh) | 2006-12-13 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
B06A | Patent application procedure suspended [chapter 6.1 patent gazette] | ||
B25A | Requested transfer of rights approved |
Owner name: ARRAYCOMM LLC (US) Free format text: TRANSFERIDO DE: ARRAYCOMM, INC. |
|
B25A | Requested transfer of rights approved |
Owner name: INTEL CORPORATION (US) Free format text: TRANSFERIDO DE: ARRAYCOMM LLC |
|
B15K | Others concerning applications: alteration of classification |
Free format text: ALTERADA A CLASSIFICACAO DE H04L 27/22 PARA INT.CL.2010.01 HO1Q 3/26; H04L 27/22; H04N 7/10 Ipc: H04Q 3/26 (2010.01), H04L 27/22 (2010.01), H04B 7/ |
|
B09A | Decision: intention to grant [chapter 9.1 patent gazette] | ||
B16A | Patent or certificate of addition of invention granted [chapter 16.1 patent gazette] |
Free format text: PRAZO DE VALIDADE: 10 (DEZ) ANOS CONTADOS A PARTIR DE 09/03/2011, OBSERVADAS AS CONDICOES LEGAIS. |
|
B21F | Lapse acc. art. 78, item iv - on non-payment of the annual fees in time | ||
B24J | Lapse because of non-payment of annual fees (definitively: art 78 iv lpi, resolution 113/2013 art. 12) |
Free format text: EM VIRTUDE DA EXTINCAO PUBLICADA NA RPI 2483 DE 07-08-2018 E CONSIDERANDO AUSENCIA DE MANIFESTACAO DENTRO DOS PRAZOS LEGAIS, INFORMO QUE CABE SER MANTIDA A EXTINCAO DA PATENTE E SEUS CERTIFICADOS, CONFORME O DISPOSTO NO ARTIGO 12, DA RESOLUCAO 113/2013. |