FI961826A - Kvadraturmultiplexing av två datasignaler spridda med olika PN-sekvenser - Google Patents

Kvadraturmultiplexing av två datasignaler spridda med olika PN-sekvenser Download PDF

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Publication number
FI961826A
FI961826A FI961826A FI961826A FI961826A FI 961826 A FI961826 A FI 961826A FI 961826 A FI961826 A FI 961826A FI 961826 A FI961826 A FI 961826A FI 961826 A FI961826 A FI 961826A
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FI
Finland
Prior art keywords
signals
channel
phase
information
communication channels
Prior art date
Application number
FI961826A
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English (en)
Finnish (fi)
Other versions
FI961826A0 (sv
Inventor
Ephraim Zehavi
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.)
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Publication date
Application filed by Qualcomm Inc filed Critical Qualcomm Inc
Publication of FI961826A0 publication Critical patent/FI961826A0/sv
Publication of FI961826A publication Critical patent/FI961826A/sv

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/0007—Code type
    • H04J13/004—Orthogonal
    • H04J13/0048—Walsh
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/0007—Code type
    • H04J13/0022—PN, e.g. Kronecker
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/10—Code generation
    • H04J13/102—Combining codes

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Stereo-Broadcasting Methods (AREA)
  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Superheterodyne Receivers (AREA)
  • Transmitters (AREA)
FI961826A 1993-11-01 1996-04-29 Kvadraturmultiplexing av två datasignaler spridda med olika PN-sekvenser FI961826A (sv)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/146,645 US5414728A (en) 1993-11-01 1993-11-01 Method and apparatus for bifurcating signal transmission over in-phase and quadrature phase spread spectrum communication channels
PCT/US1994/012448 WO1995012937A1 (en) 1993-11-01 1994-10-27 Quadrature multiplexing of two data signals spread by different pn-sequences

Publications (2)

Publication Number Publication Date
FI961826A0 FI961826A0 (sv) 1996-04-29
FI961826A true FI961826A (sv) 1996-06-28

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
FI961826A FI961826A (sv) 1993-11-01 1996-04-29 Kvadraturmultiplexing av två datasignaler spridda med olika PN-sekvenser

Country Status (18)

Country Link
US (1) US5414728A (sv)
EP (1) EP0727115B1 (sv)
JP (1) JP2851706B2 (sv)
KR (1) KR100254249B1 (sv)
CN (1) CN1065700C (sv)
AT (1) ATE333170T1 (sv)
AU (1) AU679813B2 (sv)
BR (1) BR9407919A (sv)
CA (1) CA2175488C (sv)
DE (1) DE69434790T2 (sv)
ES (1) ES2267099T3 (sv)
FI (1) FI961826A (sv)
HK (1) HK1015211A1 (sv)
IL (1) IL111450A (sv)
RU (1) RU2120189C1 (sv)
TW (1) TW306100B (sv)
WO (1) WO1995012937A1 (sv)
ZA (1) ZA948431B (sv)

Families Citing this family (173)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5668795A (en) * 1992-11-24 1997-09-16 Stanford Telecommunications, Inc. Modulation system for spread spectrum CDMA communiction
US5570349A (en) * 1994-06-07 1996-10-29 Stanford Telecommunications, Inc. Wireless direct sequence spread spectrum digital cellular telephone system
IL111469A0 (en) * 1993-11-01 1994-12-29 Omnipoint Corp Despreading/demodulating direct sequence spread spectrum signals
JP2605615B2 (ja) * 1993-12-30 1997-04-30 日本電気株式会社 スペクトラム拡散受信機
JP2655068B2 (ja) * 1993-12-30 1997-09-17 日本電気株式会社 スペクトラム拡散受信機
JP3406319B2 (ja) * 1994-02-17 2003-05-12 プロキシム，インク． 高速データ伝送無線ローカル・エリア・ネットワーク
KR100326312B1 (ko) * 1994-06-17 2002-06-22 윤종용 대역확산통신방식의동기식송신및수신장치
CN1167215C (zh) * 1994-06-23 2004-09-15 Ntt移动通信网株式会社 码分多址联接解调方法
US5621752A (en) * 1994-06-23 1997-04-15 Qualcomm Incorporated Adaptive sectorization in a spread spectrum communication system
US5630208A (en) * 1994-07-19 1997-05-13 Trimble Navigation Limited Adaptive multipath equalization
US5920555A (en) * 1994-07-28 1999-07-06 Roke Manor Research Limited Pilot assisted direct sequence spread spectrum synchronization apparatus
US5610940A (en) 1994-09-09 1997-03-11 Omnipoint Corporation Method and apparatus for noncoherent reception and correlation of a continous phase modulated signal
US5627856A (en) 1994-09-09 1997-05-06 Omnipoint Corporation Method and apparatus for receiving and despreading a continuous phase-modulated spread spectrum signal using self-synchronizing correlators
US5680414A (en) 1994-09-09 1997-10-21 Omnipoint Corporation Synchronization apparatus and method for spread spectrum receiver
US5659574A (en) 1994-09-09 1997-08-19 Omnipoint Corporation Multi-bit correlation of continuous phase modulated signals
US5757847A (en) 1994-09-09 1998-05-26 Omnipoint Corporation Method and apparatus for decoding a phase encoded signal
US5963586A (en) 1994-09-09 1999-10-05 Omnipoint Corporation Method and apparatus for parallel noncoherent correlation of a spread spectrum signal
US5629956A (en) 1994-09-09 1997-05-13 Omnipoint Corporation Method and apparatus for reception and noncoherent serial correlation of a continuous phase modulated signal
US5953370A (en) 1994-09-09 1999-09-14 Omnipoint Corporation Apparatus for receiving and correlating a spread spectrum signal
US5692007A (en) 1994-09-09 1997-11-25 Omnipoint Corporation Method and apparatus for differential phase encoding and decoding in spread-spectrum communication systems with continuous-phase modulation
US5881100A (en) 1994-09-09 1999-03-09 Omnipoint Corporation Method and apparatus for coherent correlation of a spread spectrum signal
US5832028A (en) 1994-09-09 1998-11-03 Omnipoint Corporation Method and apparatus for coherent serial correlation of a spread spectrum signal
US5754585A (en) 1994-09-09 1998-05-19 Omnipoint Corporation Method and apparatus for serial noncoherent correlation of a spread spectrum signal
US5856998A (en) 1994-09-09 1999-01-05 Omnipoint Corporation Method and apparatus for correlating a continuous phase modulated spread spectrum signal
US5754584A (en) 1994-09-09 1998-05-19 Omnipoint Corporation Non-coherent spread-spectrum continuous-phase modulation communication system
US5648982A (en) 1994-09-09 1997-07-15 Omnipoint Corporation Spread spectrum transmitter
US5742583A (en) * 1994-11-03 1998-04-21 Omnipoint Corporation Antenna diversity techniques
KR970011690B1 (ko) * 1994-11-22 1997-07-14 삼성전자 주식회사 파일럿트 채널을 이용한 대역확산 통신시스템의 데이타 송신기 및 수신기
US5602833A (en) * 1994-12-19 1997-02-11 Qualcomm Incorporated Method and apparatus for using Walsh shift keying in a spread spectrum communication system
US5691974A (en) * 1995-01-04 1997-11-25 Qualcomm Incorporated Method and apparatus for using full spectrum transmitted power in a spread spectrum communication system for tracking individual recipient phase, time and energy
US5784403A (en) * 1995-02-03 1998-07-21 Omnipoint Corporation Spread spectrum correlation using saw device
US5548253A (en) * 1995-04-17 1996-08-20 Omnipoint Corporation Spectrally efficient quadrature amplitude modulator
US5832022A (en) * 1995-06-02 1998-11-03 Omnipoint Corporation Method and apparatus for controlling the modulation index of continuous phase modulated (CPM) signals
US5745484A (en) * 1995-06-05 1998-04-28 Omnipoint Corporation Efficient communication system using time division multiplexing and timing adjustment control
US6356607B1 (en) 1995-06-05 2002-03-12 Omnipoint Corporation Preamble code structure and detection method and apparatus
ZA965340B (en) 1995-06-30 1997-01-27 Interdigital Tech Corp Code division multiple access (cdma) communication system
US7020111B2 (en) * 1996-06-27 2006-03-28 Interdigital Technology Corporation System for using rapid acquisition spreading codes for spread-spectrum communications
US6049535A (en) * 1996-06-27 2000-04-11 Interdigital Technology Corporation Code division multiple access (CDMA) communication system
US5940382A (en) * 1996-06-27 1999-08-17 Interdigital Technology Corporation Virtual locating of a fixed subscriber unit to reduce re-acquisition time
US7929498B2 (en) * 1995-06-30 2011-04-19 Interdigital Technology Corporation Adaptive forward power control and adaptive reverse power control for spread-spectrum communications
US6816473B2 (en) 1995-06-30 2004-11-09 Interdigital Technology Corporation Method for adaptive forward power control for spread-spectrum communications
US5841768A (en) 1996-06-27 1998-11-24 Interdigital Technology Corporation Method of controlling initial power ramp-up in CDMA systems by using short codes
US6801516B1 (en) 1995-06-30 2004-10-05 Interdigital Technology Corporation Spread-spectrum system for assigning information signals having different data rates
USRE38523E1 (en) 1995-06-30 2004-06-01 Interdigital Technology Corporation Spreading code sequence acquisition system and method that allows fast acquisition in code division multiple access (CDMA) systems
US6885652B1 (en) 1995-06-30 2005-04-26 Interdigital Technology Corporation Code division multiple access (CDMA) communication system
US6697350B2 (en) 1995-06-30 2004-02-24 Interdigital Technology Corporation Adaptive vector correlator for spread-spectrum communications
US5764688A (en) * 1995-06-30 1998-06-09 Roke Manor Research Limited Apparatus for use in equipment providing a digital radio link between a fixed and a mobile radio unit
US6788662B2 (en) 1995-06-30 2004-09-07 Interdigital Technology Corporation Method for adaptive reverse power control for spread-spectrum communications
US6940840B2 (en) 1995-06-30 2005-09-06 Interdigital Technology Corporation Apparatus for adaptive reverse power control for spread-spectrum communications
US7123600B2 (en) * 1995-06-30 2006-10-17 Interdigital Technology Corporation Initial power control for spread-spectrum communications
US7072380B2 (en) * 1995-06-30 2006-07-04 Interdigital Technology Corporation Apparatus for initial power control for spread-spectrum communications
US5754533A (en) * 1995-08-23 1998-05-19 Qualcomm Incorporated Method and system for non-orthogonal noise energy based gain control
US5790515A (en) * 1995-08-28 1998-08-04 Motorola, Inc. Method and apparatus for sorting walsh indexes in a communication system receiver
JP3000037B2 (ja) * 1995-09-08 2000-01-17 エヌ・ティ・ティ移動通信網株式会社 通信方法及び同通信方法のための装置
JPH0983588A (ja) * 1995-09-18 1997-03-28 Mitsubishi Electric Corp 復調器及び変復調システム及び復調方法
EP0767544A3 (en) 1995-10-04 2002-02-27 Interuniversitair Micro-Elektronica Centrum Vzw Programmable modem using spread spectrum communication
US5872810A (en) * 1996-01-26 1999-02-16 Imec Co. Programmable modem apparatus for transmitting and receiving digital data, design method and use method for said modem
US6212566B1 (en) 1996-01-26 2001-04-03 Imec Interprocess communication protocol system modem
US7099949B1 (en) 1995-10-23 2006-08-29 Imec Vzw Interprocess communication protocol system
US6246715B1 (en) 1998-06-26 2001-06-12 Samsung Electronics Co., Ltd. Data transmitter and receiver of a DS-CDMA communication system
US5991279A (en) * 1995-12-07 1999-11-23 Vistar Telecommunications Inc. Wireless packet data distributed communications system
US7590083B2 (en) * 1995-12-07 2009-09-15 Transcore Link Logistics Corp. Wireless packet data distributed communications system
DE69626404T2 (de) * 1995-12-07 2004-01-08 Vistar Telecommunications Inc., Ottawa Drahtloses verteiltes datenpaketübertragungssystem
US5862173A (en) * 1995-12-11 1999-01-19 Ericsson Inc. Re-orthogonalization of wideband CDMA signals
DE782288T1 (de) * 1995-12-26 1998-01-02 Sharp Kk Spreizspektrumnachrichtenübertragungssystem
JP2820919B2 (ja) * 1996-03-25 1998-11-05 株式会社ワイ・アール・ピー移動通信基盤技術研究所 Ｃｄｍａ移動体通信システムおよび送受信機
US5764630A (en) * 1996-03-25 1998-06-09 Stanford Telecommunications, Inc. Forward link carrier recovery in an OCDMA spread spectrum communication system without a pilot tone
US5696762A (en) * 1996-03-25 1997-12-09 Stanford Telecommunications, Inc. Rapid-acquisition access channel scheme for CDMA systems
JPH09298490A (ja) * 1996-04-30 1997-11-18 Yozan:Kk スペクトル拡散通信方式
JP3385299B2 (ja) * 1996-05-20 2003-03-10 三菱電機株式会社 スペクトル拡散通信装置
US6678311B2 (en) 1996-05-28 2004-01-13 Qualcomm Incorporated High data CDMA wireless communication system using variable sized channel codes
US5930230A (en) * 1996-05-28 1999-07-27 Qualcomm Incorporated High data rate CDMA wireless communication system
EP0813315A3 (en) * 1996-06-13 1998-06-10 Canon Kabushiki Kaisha Spread spectrum QAM transmission
JP3409628B2 (ja) * 1996-06-19 2003-05-26 株式会社エヌ・ティ・ティ・ドコモ Ｃｄｍａ通信方法およびグループ拡散変調器
US5987076A (en) * 1996-07-29 1999-11-16 Qualcomm Inc. Coherent signal processing for CDMA communication system
US5784366A (en) * 1996-08-27 1998-07-21 Transsky Corp. Wideband code-division-multiple access system and method
US6064663A (en) * 1996-09-10 2000-05-16 Nokia Mobile Phones Limited Cellular CDMA data link utilizing multiplexed channels for data rate increase
US5956345A (en) * 1996-09-13 1999-09-21 Lucent Technologies Inc. IS-95 compatible wideband communication scheme
US5805567A (en) * 1996-09-13 1998-09-08 Lucent Technologies Inc. Orthogonal modulation scheme
US6005887A (en) 1996-11-14 1999-12-21 Ericcsson, Inc. Despreading of direct sequence spread spectrum communications signals
US6141373A (en) 1996-11-15 2000-10-31 Omnipoint Corporation Preamble code structure and detection method and apparatus
US6128286A (en) * 1996-12-03 2000-10-03 Motorola, Inc. Method and apparatus for using the sidelobe of a long range antenna for a short range communication link
US5966411A (en) * 1996-12-18 1999-10-12 Alcatel Usa Sourcing, L.P. Multipath equalization using taps derived from a parallel correlator
JP3311950B2 (ja) * 1996-12-19 2002-08-05 富士通株式会社 符号多重無線装置
GB2320661B (en) 1996-12-20 2001-10-03 Dsc Telecom Lp Processing data transmitted and received over a wireless link connecting a central terminal and a subscriber terminal of a wireless telecommunications system
US6826169B1 (en) * 1996-12-20 2004-11-30 Fujitsu Limited Code multiplexing transmitting apparatus
GB2320660A (en) 1996-12-20 1998-06-24 Dsc Telecom Lp Processing data transmitted and received over a wireless link connecting a central terminal and a subscriber terminal of a wireless telecommunication system
JP3796870B2 (ja) * 1997-01-21 2006-07-12 ソニー株式会社 受信装置及び受信方法、並びに携帯電話システムの端末装置
US6289041B1 (en) 1997-02-11 2001-09-11 Snaptrack, Inc. Fast Acquisition, high sensitivity GPS receiver
DE19708626C2 (de) * 1997-03-04 1999-08-05 Rohde & Schwarz Nach dem Spreizspektrumverfahren arbeitendes Funkkommunikationssystem
KR100219035B1 (ko) * 1997-03-13 1999-09-01 이계철 다양한 레이트의 무선 멀티미디어 서비스를 위한 코드분할다중접속(cdma) 방식의 대역확산장치 및 그 방법
US6064690A (en) * 1997-05-13 2000-05-16 Yozan Inc. Spread spectrum communication system
FI105377B (sv) 1997-05-29 2000-07-31 Nokia Mobile Phones Ltd Metod för att sända två parallela kanaler med koddivision och radioapparat för att realisera metoden
US6542481B2 (en) 1998-06-01 2003-04-01 Tantivy Communications, Inc. Dynamic bandwidth allocation for multiple access communication using session queues
US5937001A (en) * 1997-06-20 1999-08-10 Cincinnati Electronics Corporation Range safety communication system and method utilizing pseudorandom noise sequences
US6081536A (en) 1997-06-20 2000-06-27 Tantivy Communications, Inc. Dynamic bandwidth allocation to transmit a wireless protocol across a code division multiple access (CDMA) radio link
US6094450A (en) * 1997-06-20 2000-07-25 Cincinnati Electronics Corporation Spread spectrum chip shift keying modulation/demodulation system and method
US6005889A (en) * 1997-07-17 1999-12-21 Nokia Pseudo-random noise detector for signals having a carrier frequency offset
US6038263A (en) * 1997-07-31 2000-03-14 Motorola, Inc. Method and apparatus for transmitting signals in a communication system
US6285655B1 (en) * 1997-09-08 2001-09-04 Qualcomm Inc. Method and apparatus for providing orthogonal spot beams, sectors, and picocells
US5955986A (en) * 1997-11-20 1999-09-21 Eagle Eye Technologies, Inc. Low-power satellite-based geopositioning system
KR100269593B1 (ko) 1997-12-02 2000-10-16 정선종 다중 채널을 위한 직교 복소 확산 방법 및 그 장치
US5963549A (en) * 1997-12-10 1999-10-05 L-3 Communications Corporation Fixed wireless loop system having baseband combiner predistortion summing table
US7496072B2 (en) * 1997-12-17 2009-02-24 Interdigital Technology Corporation System and method for controlling signal strength over a reverse link of a CDMA wireless communication system
US7394791B2 (en) 1997-12-17 2008-07-01 Interdigital Technology Corporation Multi-detection of heartbeat to reduce error probability
US7936728B2 (en) 1997-12-17 2011-05-03 Tantivy Communications, Inc. System and method for maintaining timing of synchronization messages over a reverse link of a CDMA wireless communication system
US8175120B2 (en) 2000-02-07 2012-05-08 Ipr Licensing, Inc. Minimal maintenance link to support synchronization
US6222832B1 (en) 1998-06-01 2001-04-24 Tantivy Communications, Inc. Fast Acquisition of traffic channels for a highly variable data rate reverse link of a CDMA wireless communication system
US9525923B2 (en) 1997-12-17 2016-12-20 Intel Corporation Multi-detection of heartbeat to reduce error probability
US6125136A (en) * 1997-12-31 2000-09-26 Sony Corporation Method and apparatus for demodulating trellis coded direct sequence spread spectrum communication signals
US6018547A (en) * 1998-01-09 2000-01-25 Bsd Broadband, N.V. Method and apparatus for increasing spectral efficiency of CDMA systems using direct sequence spread spectrum signals
US6240081B1 (en) * 1998-01-15 2001-05-29 Denso Corporation Multicode CDMA transmitter with improved signal processing
US6366588B1 (en) * 1998-02-27 2002-04-02 Lucent Technologies Inc. Method and apparatus for achieving data rate variability in orthogonal spread spectrum communication systems
JP3858433B2 (ja) * 1998-03-30 2006-12-13 ソニー株式会社 パイロット信号検出方法及び受信機
KR100381012B1 (ko) 1998-05-04 2003-08-19 한국전자통신연구원 부호분할 다중접속 방식에서 상향 공통 채널의 임의 접속 장치및 방법
US8134980B2 (en) 1998-06-01 2012-03-13 Ipr Licensing, Inc. Transmittal of heartbeat signal at a lower level than heartbeat request
US7773566B2 (en) 1998-06-01 2010-08-10 Tantivy Communications, Inc. System and method for maintaining timing of synchronization messages over a reverse link of a CDMA wireless communication system
US7221664B2 (en) * 1998-06-01 2007-05-22 Interdigital Technology Corporation Transmittal of heartbeat signal at a lower level than heartbeat request
US6154451A (en) * 1998-06-29 2000-11-28 Northrop Grumman Corporation Method for dissemination of multi-sensor products
US6201786B1 (en) * 1998-06-29 2001-03-13 Northrop Grumman Corporation Adaptable and controllable multi-channel data link
FR2782587B1 (fr) * 1998-08-20 2000-09-22 France Telecom Procedes de communications numeriques amrc a repartition des symboles de reference
DE69835087T2 (de) * 1998-10-23 2007-02-01 Sony Deutschland Gmbh Empfängerarchitektur für ein Mehrfachverwürfelkode CDMA Übertragungsverfahren
US6418134B1 (en) * 1998-11-09 2002-07-09 Nortel Networks Limited Finite impulse response filter for multi-code CDMA signals
US6389138B1 (en) 1998-11-12 2002-05-14 Lucent Technologies Inc. Method and apparatus for generating a complex scrambling code sequence
KR100312214B1 (ko) * 1998-12-08 2001-12-12 윤종용 부호분할다중접속통신시스템의채널확산장치및방법
JP3252820B2 (ja) * 1999-02-24 2002-02-04 日本電気株式会社 復調及び変調回路並びに復調及び変調方法
US6088347A (en) * 1999-03-10 2000-07-11 Massachusetts Institute Of Technology Variable chip rate code-division multiple access
US6614776B1 (en) * 1999-04-28 2003-09-02 Tantivy Communications, Inc. Forward error correction scheme for high rate data exchange in a wireless system
US7443906B1 (en) 1999-05-31 2008-10-28 Electronics And Telecommunications Research Institute Apparatus and method for modulating data message by employing orthogonal variable spreading factor (OVSF) codes in mobile communication system
US6535547B1 (en) * 1999-06-02 2003-03-18 Telefonaktiebolaget Lm Ericsson (Publ) Random access in a mobile telecommunications system
US8255149B2 (en) 1999-07-12 2012-08-28 Skybitz, Inc. System and method for dual-mode location determination
US6560536B1 (en) 1999-07-12 2003-05-06 Eagle-Eye, Inc. System and method for rapid telepositioning
US20040143392A1 (en) * 1999-07-12 2004-07-22 Skybitz, Inc. System and method for fast acquisition reporting using communication satellite range measurement
FR2804560B1 (fr) * 2000-01-31 2006-08-04 Commissariat Energie Atomique Procede de radiocommunications amrc avec codes d'acces et recepteur correspondant
US6904079B2 (en) 2000-02-08 2005-06-07 Ipr Licensing, Inc. Access channel structure for wireless communication system
US6813257B1 (en) * 2000-06-26 2004-11-02 Motorola, Inc. Apparatus and methods for controlling short code timing offsets in a CDMA system
US7911993B2 (en) 2000-07-19 2011-03-22 Ipr Licensing, Inc. Method and apparatus for allowing soft handoff of a CDMA reverse link utilizing an orthogonal channel structure
US7006428B2 (en) * 2000-07-19 2006-02-28 Ipr Licensing, Inc. Method for allowing multi-user orthogonal and non-orthogonal interoperability of code channels
US8537656B2 (en) 2000-07-19 2013-09-17 Ipr Licensing, Inc. Method for compensating for multi-path of a CDMA reverse link utilizing an orthogonal channel structure
AU2001283181A1 (en) 2000-08-09 2002-02-18 Skybitz, Inc System and method for fast code phase and carrier frequency acquisition in gps receiver
US6959033B1 (en) * 2000-08-25 2005-10-25 Texas Instruments Incorporated System and method for assigning combiner channels in spread spectrum communications
US6466958B1 (en) * 2000-09-12 2002-10-15 Interstate Electronics Corporation, A Division Of L3 Communications Corporation Parallel frequency searching in an acquisition correlator
US6771691B1 (en) 2000-09-15 2004-08-03 Texas Instruments Incorporated System and method for extracting soft symbols in direct sequence spread spectrum communications
AU2001288963A1 (en) 2000-09-18 2002-04-02 Skybitz, Inc System and method for fast code phase and carrier frequency acquisition in gps receiver
US7031374B1 (en) 2000-10-06 2006-04-18 Texas Instruments Incorporated System and method for selecting sample streams in direct sequence spread spectrum communications
US8155096B1 (en) 2000-12-01 2012-04-10 Ipr Licensing Inc. Antenna control system and method
ES2206374T3 (es) * 2000-12-28 2004-05-16 Com-Research Gmbh Solutions For Communication Systems Procedimiento y sistema para la supresion de interferencias para la transmision tdma y/o fdma.
US6954448B2 (en) 2001-02-01 2005-10-11 Ipr Licensing, Inc. Alternate channel for carrying selected message types
US7551663B1 (en) 2001-02-01 2009-06-23 Ipr Licensing, Inc. Use of correlation combination to achieve channel detection
CN1150709C (zh) * 2001-02-28 2004-05-19 信息产业部电信传输研究所 Cdma蜂窝系统两级变码片速率扩频和解扩方法
US6982946B2 (en) * 2001-04-05 2006-01-03 Telefonaktiebolaget Lm Ericsson (Publ) Partly orthogonal multiple code trees
US6853646B2 (en) 2001-05-02 2005-02-08 Ipr Licensing, Inc. Fast switching of forward link in wireless system
US6987799B2 (en) * 2001-05-03 2006-01-17 Texas Instruments Incorporated System and method for demodulating associated information channels in direct sequence spread spectrum communications
KR100424538B1 (ko) * 2001-05-29 2004-03-27 엘지전자 주식회사 이동통신시스템에서의 스크램블링 코드 생성 장치 및 방법
ES2626289T3 (es) 2001-06-13 2017-07-24 Intel Corporation Método y aparatos para la transmisión de señal de latido a un nivel más bajo que la solicitud de latido
US6917581B2 (en) * 2001-07-17 2005-07-12 Ipr Licensing, Inc. Use of orthogonal or near orthogonal codes in reverse link
CA2356077A1 (en) * 2001-08-28 2003-02-28 Sirific Wireless Corporation Improved apparatus and method for down conversion
US7161973B2 (en) * 2002-12-17 2007-01-09 Sbc Properties, L.P. Pilot aided adaptive minimum mean square interference cancellation and detection
KR100691285B1 (ko) * 2004-01-19 2007-03-12 한국전자통신연구원 동일채널 중계기의 변조장치 및 그 방법
US8325591B2 (en) 2004-02-26 2012-12-04 Qualcomm Incorporated Suppressing cross-polarization interference in an orthogonal communication link
WO2006001143A1 (ja) 2004-06-24 2006-01-05 Matsushita Electric Industrial Co., Ltd. 無線送信装置、無線受信装置およびシンボル配置方法
JP4362090B2 (ja) * 2004-07-05 2009-11-11 パナソニック株式会社 変調器
US7738572B2 (en) * 2004-10-11 2010-06-15 Realtek Semiconductor Corp. Orthogonal frequency division multiplexing (OFDM) receiver capable of correcting in-phase and quadrature-phase mismatch and method thereof
US7436878B1 (en) * 2005-05-24 2008-10-14 L-3 Communications Corporation Method and apparatus for efficient carrier bin search for a composite spreading code
US7917798B2 (en) 2005-10-04 2011-03-29 Hypres, Inc. Superconducting digital phase rotator
EP1786132A1 (en) * 2005-11-11 2007-05-16 BRITISH TELECOMMUNICATIONS public limited company Method and system for secure communication
US8920343B2 (en) 2006-03-23 2014-12-30 Michael Edward Sabatino Apparatus for acquiring and processing of physiological auditory signals
US8217760B2 (en) * 2008-03-20 2012-07-10 Checkpoint Systems, Inc. Applique nodes for performance and functionality enhancement in radio frequency identification systems
US10015038B1 (en) * 2016-12-28 2018-07-03 Adx Research, Inc. Pulse quadrature modulator and method
RU2691733C1 (ru) * 2018-10-15 2019-06-18 Акционерное общество "Концерн "Созвездие" Устройство формирования и обработки широкополосных сигналов
RU2714300C1 (ru) * 2019-02-06 2020-02-14 Акционерное общество "Концерн "Созвездие" Способ расширения спектра сигналов
CN111565161B (zh) * 2020-04-28 2022-05-27 北京升哲科技有限公司 一种基带发射机、基带接收机、调制解调系统和终端
CN111740781B (zh) * 2020-05-26 2022-03-18 复旦大学 一种w波段矢量qpsk毫米波信号的产生装置和方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4912722A (en) * 1988-09-20 1990-03-27 At&T Bell Laboratories Self-synchronous spread spectrum transmitter/receiver
US5103459B1 (en) * 1990-06-25 1999-07-06 Qualcomm Inc System and method for generating signal waveforms in a cdma cellular telephone system
US5235614A (en) * 1991-03-13 1993-08-10 Motorola, Inc. Method and apparatus for accommodating a variable number of communication channels in a spread spectrum communication system
US5216692A (en) * 1992-03-31 1993-06-01 Motorola, Inc. Method and apparatus for adjusting a power control threshold in a communication system
US5297161A (en) * 1992-06-29 1994-03-22 Motorola Inc. Method and apparatus for power estimation in an orthogonal coded communication system

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ZA948431B (en) 1995-06-29
US5414728A (en) 1995-05-09
TW306100B (sv) 1997-05-21
HK1015211A1 (en) 1999-10-08
IL111450A0 (en) 1994-12-29
DE69434790T2 (de) 2007-06-28
JP2851706B2 (ja) 1999-01-27
ATE333170T1 (de) 2006-08-15
WO1995012937A1 (en) 1995-05-11
CA2175488A1 (en) 1995-05-11
KR960706242A (ko) 1996-11-08
AU1084795A (en) 1995-05-23
RU2120189C1 (ru) 1998-10-10
IL111450A (en) 1998-12-06
KR100254249B1 (ko) 2000-05-01
AU679813B2 (en) 1997-07-10
FI961826A0 (sv) 1996-04-29
EP0727115A1 (en) 1996-08-21
JPH09504667A (ja) 1997-05-06
ES2267099T3 (es) 2007-03-01
CN1065700C (zh) 2001-05-09
BR9407919A (pt) 1996-11-26
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CN1133658A (zh) 1996-10-16
CA2175488C (en) 2000-09-05

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