IL115461A0 - Multipath search processor for a spread spectrum multiple access communication system - Google Patents

Multipath search processor for a spread spectrum multiple access communication system

Info

Publication number
IL115461A0
IL115461A0 IL11546195A IL11546195A IL115461A0 IL 115461 A0 IL115461 A0 IL 115461A0 IL 11546195 A IL11546195 A IL 11546195A IL 11546195 A IL11546195 A IL 11546195A IL 115461 A0 IL115461 A0 IL 115461A0
Authority
IL
Israel
Prior art keywords
search
offset
modem
spread spectrum
processor
Prior art date
Application number
IL11546195A
Other languages
English (en)
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 IL115461A0 publication Critical patent/IL115461A0/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/16—Code allocation
    • 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
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7073—Synchronisation aspects
    • H04B1/7075—Synchronisation aspects with code phase acquisition
    • H04B1/70751—Synchronisation aspects with code phase acquisition using partial detection
    • H04B1/70752—Partial correlation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7073—Synchronisation aspects
    • H04B1/7075—Synchronisation aspects with code phase acquisition
    • H04B1/70756—Jumping within the code, i.e. masking or slewing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2628—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using code-division multiple access [CDMA] or spread spectrum multiple access [SSMA]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7097—Interference-related aspects
    • H04B1/711—Interference-related aspects the interference being multi-path interference
    • H04B1/7115—Constructive combining of multi-path signals, i.e. RAKE receivers
    • H04B1/7117—Selection, re-selection, allocation or re-allocation of paths to fingers, e.g. timing offset control of allocated fingers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2201/00—Indexing scheme relating to details of transmission systems not covered by a single group of H04B3/00 - H04B13/00
    • H04B2201/69—Orthogonal indexing scheme relating to spread spectrum techniques in general
    • H04B2201/707—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation
    • H04B2201/70703—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation using multiple or variable rates

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radio Relay Systems (AREA)
  • Computer And Data Communications (AREA)
  • Circuits Of Receivers In General (AREA)
  • Radio Transmission System (AREA)
IL11546195A 1994-09-30 1995-09-29 Multipath search processor for a spread spectrum multiple access communication system IL115461A0 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US31617794A 1994-09-30 1994-09-30

Publications (1)

Publication Number Publication Date
IL115461A0 true IL115461A0 (en) 1995-12-31

Family

ID=23227854

Family Applications (1)

Application Number Title Priority Date Filing Date
IL11546195A IL115461A0 (en) 1994-09-30 1995-09-29 Multipath search processor for a spread spectrum multiple access communication system

Country Status (23)

Country Link
US (1) US20010046205A1 (sv)
EP (1) EP0732013B1 (sv)
JP (1) JPH09506234A (sv)
KR (1) KR100385004B1 (sv)
CN (1) CN1096157C (sv)
AT (1) ATE243395T1 (sv)
AU (2) AU688625B2 (sv)
BR (1) BR9506390A (sv)
CA (1) CA2174243A1 (sv)
DE (1) DE69531096T2 (sv)
DK (1) DK0732013T3 (sv)
ES (1) ES2201123T3 (sv)
FI (1) FI114123B (sv)
HK (1) HK1015198A1 (sv)
IL (1) IL115461A0 (sv)
MX (1) MX9602026A (sv)
MY (1) MY120873A (sv)
PT (1) PT732013E (sv)
RU (1) RU2149509C1 (sv)
SI (1) SI0732013T1 (sv)
TW (1) TW294866B (sv)
WO (1) WO1996010873A1 (sv)
ZA (1) ZA957858B (sv)

Families Citing this family (142)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6304987B1 (en) * 1995-06-07 2001-10-16 Texas Instruments Incorporated Integrated test circuit
US5710768A (en) * 1994-09-30 1998-01-20 Qualcomm Incorporated Method of searching for a bursty signal
US6724738B1 (en) 1997-02-27 2004-04-20 Motorola Inc. Method and apparatus for acquiring a pilot signal in a CDMA receiver
US6144649A (en) * 1997-02-27 2000-11-07 Motorola, Inc. Method and apparatus for acquiring a pilot signal in a CDMA receiver
US6788708B1 (en) 1997-03-30 2004-09-07 Intel Corporation Code synchronization unit and method
IL120555A (en) * 1997-03-30 2000-06-01 D S P C Israel Ltd Code synchronization unit and method
US5872774A (en) 1997-09-19 1999-02-16 Qualcomm Incorporated Mobile station assisted timing synchronization in a CDMA communication system
US6639906B1 (en) 1997-12-09 2003-10-28 Jeffrey A. Levin Multichannel demodulator
DE19824218C1 (de) * 1998-05-29 2000-03-23 Ericsson Telefon Ab L M Multipfad-Ausbreitungsverzögerungs-Bestimmungsvorrichtung unter Verwendung von periodisch eingefügten Pilotsymbolen
US6370397B1 (en) 1998-05-01 2002-04-09 Telefonaktiebolaget Lm Ericsson (Publ) Search window delay tracking in code division multiple access communication systems
US6731622B1 (en) 1998-05-01 2004-05-04 Telefonaktiebolaget Lm Ericsson (Publ) Multipath propagation delay determining means using periodically inserted pilot symbols
US6456646B1 (en) * 1998-11-30 2002-09-24 Ericsson Inc. Methods and systems for detecting codewords with intersymbol interference and imperfect timing
FI982856A (sv) 1998-12-31 2000-07-01 Nokia Networks Oy Mottagningsförfarande och mottagare
US6320849B1 (en) 1999-07-01 2001-11-20 Qualcomm Incorporated Dynamic control of search duration in a wireless communication device
KR100450791B1 (ko) * 1999-07-13 2004-10-01 삼성전자주식회사 씨디엠에이 복조방법 및 복조기
US6922434B2 (en) 1999-10-19 2005-07-26 Ericsson Inc. Apparatus and methods for finger delay selection in RAKE receivers
US6683924B1 (en) 1999-10-19 2004-01-27 Ericsson Inc. Apparatus and methods for selective correlation timing in rake receivers
US6577616B1 (en) * 1999-12-29 2003-06-10 Nortel Networks Limited Systems and methods for implementing large CDMA cell sizes
US6947931B1 (en) * 2000-04-06 2005-09-20 International Business Machines Corporation Longest prefix match (LPM) algorithm implementation for a network processor
EP1154585B1 (en) * 2000-05-12 2008-02-27 IPCom GmbH & Co. KG Receiver for a communication device for a multi-path radio channel
GB0016663D0 (en) * 2000-07-06 2000-08-23 Nokia Networks Oy Receiver and method of receiving
US7187708B1 (en) * 2000-10-03 2007-03-06 Qualcomm Inc. Data buffer structure for physical and transport channels in a CDMA system
RU2192709C2 (ru) * 2000-11-30 2002-11-10 Гармонов Александр Васильевич Способ приема многолучевых сигналов в системе радиосвязи с кодовым разделением каналов и устройство для его реализации
US6954644B2 (en) 2000-12-04 2005-10-11 Telefonaktiebolaget Lm Ericsson (Publ) Using geographical coordinates to determine mobile station time position for synchronization during diversity handover
US6980803B2 (en) 2000-12-04 2005-12-27 Telefonaktiebolaget Lm Ericsson (Publ) Using statistically ascertained position for starting synchronization searcher during diversity handover
US6907245B2 (en) 2000-12-04 2005-06-14 Telefonaktiebolaget Lm Ericsson (Publ) Dynamic offset threshold for diversity handover in telecommunications system
US7769078B2 (en) 2000-12-22 2010-08-03 Telefonaktiebolaget Lm Ericsson (Publ) Apparatus, methods and computer program products for delay selection in a spread-spectrum receiver
JP3992459B2 (ja) * 2001-07-23 2007-10-17 富士通株式会社 受信装置、受信方法、および、半導体装置
US7116126B2 (en) * 2001-10-16 2006-10-03 Sun Microsystems, Inc. Intelligent delay insertion based on transition
US7075885B2 (en) * 2001-12-03 2006-07-11 Motorola, Inc. Method for assigning variable-length walsh codes for code division multiple access communications systems
US20030108109A1 (en) * 2001-12-10 2003-06-12 Khieu Cong Q. Routing miller factor cancelling technique
US7095710B2 (en) * 2001-12-21 2006-08-22 Qualcomm Decoding using walsh space information
US7215935B2 (en) * 2002-01-17 2007-05-08 Qualcomm Incorporated Segmented CDMA searching
US7463671B2 (en) * 2002-02-19 2008-12-09 Marvell World Trade Ltd. Rake receiver interface
US8194770B2 (en) 2002-08-27 2012-06-05 Qualcomm Incorporated Coded MIMO systems with selective channel inversion applied per eigenmode
US8170513B2 (en) 2002-10-25 2012-05-01 Qualcomm Incorporated Data detection and demodulation for wireless communication systems
US8320301B2 (en) 2002-10-25 2012-11-27 Qualcomm Incorporated MIMO WLAN system
US8208364B2 (en) 2002-10-25 2012-06-26 Qualcomm Incorporated MIMO system with multiple spatial multiplexing modes
US8570988B2 (en) 2002-10-25 2013-10-29 Qualcomm Incorporated Channel calibration for a time division duplexed communication system
US20040081131A1 (en) 2002-10-25 2004-04-29 Walton Jay Rod OFDM communication system with multiple OFDM symbol sizes
US7324429B2 (en) 2002-10-25 2008-01-29 Qualcomm, Incorporated Multi-mode terminal in a wireless MIMO system
US7002900B2 (en) 2002-10-25 2006-02-21 Qualcomm Incorporated Transmit diversity processing for a multi-antenna communication system
US8169944B2 (en) 2002-10-25 2012-05-01 Qualcomm Incorporated Random access for wireless multiple-access communication systems
US8134976B2 (en) 2002-10-25 2012-03-13 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
US7986742B2 (en) 2002-10-25 2011-07-26 Qualcomm Incorporated Pilots for MIMO communication system
US7308286B2 (en) * 2003-11-20 2007-12-11 Telefonaktiebolaget Lm Ericsson (Publ) Multi-dimensional joint searcher and channel estimators
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
JP4297780B2 (ja) 2003-12-22 2009-07-15 株式会社ルネサステクノロジ 受信装置
US7890116B2 (en) 2004-05-05 2011-02-15 Nokia Corporation Adaptive beacon period in a distributed network
US7496081B2 (en) 2004-05-05 2009-02-24 Nokia Corporation Adaptive beacon period in a distributed network
US20050281320A1 (en) * 2004-06-17 2005-12-22 W5 Network Low power wireless communication system and protocol
US8068530B2 (en) 2004-06-18 2011-11-29 Qualcomm Incorporated Signal acquisition in a wireless communication system
US20060163349A1 (en) * 2004-09-30 2006-07-27 W5 Networks, Inc. Wireless systems suitable for retail automation and promotion
US7558591B2 (en) * 2004-10-12 2009-07-07 Magnolia Broadband Inc. Determining a power control group boundary of a power control group
KR101096404B1 (ko) 2005-02-22 2011-12-21 엘지전자 주식회사 비동기 단말 모뎀의 다중 경로 탐색기
US7466749B2 (en) 2005-05-12 2008-12-16 Qualcomm Incorporated Rate selection with margin sharing
US8358714B2 (en) 2005-06-16 2013-01-22 Qualcomm Incorporated Coding and modulation for multiple data streams in a communication system
US20070046560A1 (en) * 2005-08-30 2007-03-01 W5 Networks, Inc. Interleaved text display
US7602838B2 (en) * 2005-12-22 2009-10-13 Telefonaktiebolaget Lm Ericsson (Publ) Linear turbo equalization using despread values
TWI324469B (en) * 2006-01-13 2010-05-01 Via Tech Inc Method and apparatus for delaying sampled signal
US8738056B2 (en) 2006-05-22 2014-05-27 Qualcomm Incorporation Signal acquisition in a wireless communication system
US8929353B2 (en) 2007-05-09 2015-01-06 Qualcomm Incorporated Preamble structure and acquisition for a wireless communication system
BRPI0712926B1 (pt) 2006-06-13 2019-11-12 Qualcomm Inc estrutura de preâmbulo e aquisição para um sistema de comunicação sem fio
US8265178B2 (en) 2006-11-07 2012-09-11 Qualcomm Incorporated Methods and apparatus for signal and timing detection in wireless communication systems
WO2009034614A1 (ja) * 2007-09-11 2009-03-19 Fujitsu Limited 無線基地局及びその制御方法
US8532201B2 (en) 2007-12-12 2013-09-10 Qualcomm Incorporated Methods and apparatus for identifying a preamble sequence and for estimating an integer carrier frequency offset
US8537931B2 (en) 2008-01-04 2013-09-17 Qualcomm Incorporated Methods and apparatus for synchronization and detection in wireless communication systems
US8878393B2 (en) 2008-05-13 2014-11-04 Qualcomm Incorporated Wireless power transfer for vehicles
US8629650B2 (en) 2008-05-13 2014-01-14 Qualcomm Incorporated Wireless power transfer using multiple transmit antennas
US8228971B2 (en) * 2008-07-29 2012-07-24 Agere Systems Inc. Technique for searching for a preamble signal in a spread spectrum signal using a fast Hadamard transform
US8254365B2 (en) * 2008-12-02 2012-08-28 Motorola Mobility Llc Method for maintaining timing across discontinuous activity gaps for a non-real time data interface
US20100201312A1 (en) 2009-02-10 2010-08-12 Qualcomm Incorporated Wireless power transfer for portable enclosures
US9312924B2 (en) 2009-02-10 2016-04-12 Qualcomm Incorporated Systems and methods relating to multi-dimensional wireless charging
US8854224B2 (en) 2009-02-10 2014-10-07 Qualcomm Incorporated Conveying device information relating to wireless charging
EP2326022A1 (en) * 2009-11-23 2011-05-25 Nxp B.V. Device for acquiring a spread spectrum signal
US9444514B2 (en) 2010-05-28 2016-09-13 Cohere Technologies, Inc. OTFS methods of data channel characterization and uses thereof
US11943089B2 (en) 2010-05-28 2024-03-26 Cohere Technologies, Inc. Modulation and equalization in an orthonormal time-shifting communications system
US9071286B2 (en) 2011-05-26 2015-06-30 Cohere Technologies, Inc. Modulation and equalization in an orthonormal time-frequency shifting communications system
US10667148B1 (en) 2010-05-28 2020-05-26 Cohere Technologies, Inc. Methods of operating and implementing wireless communications systems
US9130638B2 (en) 2011-05-26 2015-09-08 Cohere Technologies, Inc. Modulation and equalization in an orthonormal time-frequency shifting communications system
US8976851B2 (en) 2011-05-26 2015-03-10 Cohere Technologies, Inc. Modulation and equalization in an orthonormal time-frequency shifting communications system
US10681568B1 (en) 2010-05-28 2020-06-09 Cohere Technologies, Inc. Methods of data channel characterization and uses thereof
US9071285B2 (en) 2011-05-26 2015-06-30 Cohere Technologies, Inc. Modulation and equalization in an orthonormal time-frequency shifting communications system
RU2485694C2 (ru) * 2011-04-15 2013-06-20 Закрытое акционерное общество Научно-производственный Центр "Микропроцессорные технологии" Устройство и способ формирования ds-кода
US9031141B2 (en) 2011-05-26 2015-05-12 Cohere Technologies, Inc. Modulation and equalization in an orthonormal time-frequency shifting communications system
CN103051357B (zh) * 2011-10-13 2017-03-29 中兴通讯股份有限公司 多径对齐累加方法及装置
EP2832000B8 (en) * 2012-03-26 2020-07-22 Cohere Technologies, Inc. Signal modulation method resistant to echo reflections and frequency offsets
US9929783B2 (en) 2012-06-25 2018-03-27 Cohere Technologies, Inc. Orthogonal time frequency space modulation system
US10411843B2 (en) 2012-06-25 2019-09-10 Cohere Technologies, Inc. Orthogonal time frequency space communication system compatible with OFDM
US10090972B2 (en) 2012-06-25 2018-10-02 Cohere Technologies, Inc. System and method for two-dimensional equalization in an orthogonal time frequency space communication system
US10469215B2 (en) 2012-06-25 2019-11-05 Cohere Technologies, Inc. Orthogonal time frequency space modulation system for the Internet of Things
US9967758B2 (en) 2012-06-25 2018-05-08 Cohere Technologies, Inc. Multiple access in an orthogonal time frequency space communication system
US10003487B2 (en) 2013-03-15 2018-06-19 Cohere Technologies, Inc. Symplectic orthogonal time frequency space modulation system
US9912507B2 (en) 2012-06-25 2018-03-06 Cohere Technologies, Inc. Orthogonal time frequency space communication system compatible with OFDM
US10333824B1 (en) * 2013-01-02 2019-06-25 8X8, Inc. Analysis of transmission characteristics in a voice-over-IP network
US10090973B2 (en) 2015-05-11 2018-10-02 Cohere Technologies, Inc. Multiple access in an orthogonal time frequency space communication system
US10158394B2 (en) 2015-05-11 2018-12-18 Cohere Technologies, Inc. Systems and methods for symplectic orthogonal time frequency shifting modulation and transmission of data
US10574317B2 (en) 2015-06-18 2020-02-25 Cohere Technologies, Inc. System and method for providing wireless communication services using configurable broadband infrastructure shared among multiple network operators
US9866363B2 (en) 2015-06-18 2018-01-09 Cohere Technologies, Inc. System and method for coordinated management of network access points
CN108353052B (zh) 2015-06-27 2021-12-03 凝聚技术股份有限公司 与ofdm兼容的正交时频空间通信系统
US10892547B2 (en) 2015-07-07 2021-01-12 Cohere Technologies, Inc. Inconspicuous multi-directional antenna system configured for multiple polarization modes
CN108370355B (zh) 2015-07-12 2021-02-12 凝聚技术公司 对多个窄带子载波的正交时间频率空间调制的方法和通信设备
EP3348015B1 (en) 2015-09-07 2022-09-07 Cohere Technologies, Inc. Multiple access using orthogonal time frequency space modulation
EP3378187B1 (en) 2015-11-18 2022-03-30 Cohere Technologies, Inc. Orthogonal time frequency space modulation techniques
CN108781072B (zh) 2015-12-09 2022-04-26 凝聚技术公司 利用复正交函数的导频封装
EP3420641A4 (en) 2016-02-25 2019-12-11 Cohere Technologies, Inc. REFERENCE SIGNAL PACKAGING FOR WIRELESS COMMUNICATIONS
US10693692B2 (en) 2016-03-23 2020-06-23 Cohere Technologies, Inc. Receiver-side processing of orthogonal time frequency space modulated signals
US9667307B1 (en) 2016-03-31 2017-05-30 Cohere Technologies Wireless telecommunications system for high-mobility applications
CN117097594A (zh) 2016-03-31 2023-11-21 凝聚技术公司 使用正交时间频率空间调制的导频信号的信道获取
WO2017173389A1 (en) 2016-04-01 2017-10-05 Cohere Technologies Iterative two dimensional equalization of orthogonal time frequency space modulated signals
CN107295695A (zh) * 2016-04-01 2017-10-24 索尼公司 电子装置、信息处理设备和信息处理方法
CN109196812B (zh) 2016-04-01 2021-03-09 科希尔技术股份有限公司 正交时频空间通信系统中的汤姆林森-哈拉希玛预编码方法和装置
WO2017201467A1 (en) 2016-05-20 2017-11-23 Cohere Technologies Iterative channel estimation and equalization with superimposed reference signals
CN116865924A (zh) 2016-08-12 2023-10-10 凝聚技术公司 正交时间频率空间信号的多用户复用
EP3497907A4 (en) 2016-08-12 2020-03-04 Cohere Technologies, Inc. LOCALIZED EQUALIZATION FOR INTER-CARRIER INTERFERENCE CHANNELS
WO2018031952A1 (en) 2016-08-12 2018-02-15 Cohere Technologies Iterative multi-level equalization and decoding
WO2018064587A1 (en) 2016-09-29 2018-04-05 Cohere Technologies Transport block segmentation for multi-level codes
EP3520310B1 (en) 2016-09-30 2021-10-27 Cohere Technologies, Inc. Uplink user resource allocation for orthogonal time frequency space modulation
WO2018106731A1 (en) 2016-12-05 2018-06-14 Cohere Technologies Fixed wireless access using orthogonal time frequency space modulation
WO2018129554A1 (en) 2017-01-09 2018-07-12 Cohere Technologies Pilot scrambling for channel estimation
WO2018140837A1 (en) 2017-01-27 2018-08-02 Cohere Technologies Variable beamwidth multiband antenna
US10568143B2 (en) 2017-03-28 2020-02-18 Cohere Technologies, Inc. Windowed sequence for random access method and apparatus
WO2018191309A1 (en) 2017-04-11 2018-10-18 Cohere Technologies Digital communication using dispersed orthogonal time frequency space modulated signals
US11147087B2 (en) 2017-04-21 2021-10-12 Cohere Technologies, Inc. Communication techniques using quasi-static properties of wireless channels
EP3616265A4 (en) 2017-04-24 2021-01-13 Cohere Technologies, Inc. MULTI-HARNESS ANTENNA DESIGNS AND OPERATION
WO2018200577A1 (en) 2017-04-24 2018-11-01 Cohere Technologies Digital communication using lattice division multiplexing
EP3652907A4 (en) 2017-07-12 2021-04-07 Cohere Technologies, Inc. DATA MODULATION SCHEMES BASED ON THE ZAK TRANSFORM
WO2019032605A1 (en) 2017-08-11 2019-02-14 Cohere Technologies RADIATION TRACING TECHNIQUE FOR WIRELESS CHANNEL MEASUREMENTS
WO2019036492A1 (en) 2017-08-14 2019-02-21 Cohere Technologies ASSIGNMENT OF TRANSMISSION RESOURCES BY DIVISION OF BLOCKS OF PHYSICAL RESOURCES
US11102034B2 (en) 2017-09-06 2021-08-24 Cohere Technologies, Inc. Lattice reduction in orthogonal time frequency space modulation
US11283561B2 (en) 2017-09-11 2022-03-22 Cohere Technologies, Inc. Wireless local area networks using orthogonal time frequency space modulation
CN117040988A (zh) 2017-09-15 2023-11-10 凝聚技术公司 在正交时频空间信号接收器中实现同步
US11532891B2 (en) 2017-09-20 2022-12-20 Cohere Technologies, Inc. Low cost electromagnetic feed network
WO2019068053A1 (en) 2017-09-29 2019-04-04 Cohere Technologies, Inc. ERROR CORRECTION WITHOUT RETURN CIRCUIT USING LOW DENSITY NON-BINARY PARITY CHECK CODES
EP3704802B1 (en) 2017-11-01 2024-01-03 Cohere Technologies, Inc. Precoding in wireless systems using orthogonal time frequency space multiplexing
WO2019113046A1 (en) 2017-12-04 2019-06-13 Cohere Technologies, Inc. Implementation of orthogonal time frequency space modulation for wireless communications
WO2019157230A1 (en) 2018-02-08 2019-08-15 Cohere Technologies, Inc. Aspects of channel estimation for orthogonal time frequency space modulation for wireless communications
EP3763050A4 (en) 2018-03-08 2021-11-24 Cohere Technologies, Inc. PLANNING MULTI-USER MIMO TRANSMISSIONS IN FIXED WIRELESS COMMUNICATION SYSTEMS
US11329848B2 (en) 2018-06-13 2022-05-10 Cohere Technologies, Inc. Reciprocal calibration for channel estimation based on second-order statistics
US11522600B1 (en) 2018-08-01 2022-12-06 Cohere Technologies, Inc. Airborne RF-head system
RU205767U1 (ru) * 2020-11-27 2021-08-09 Российская Федерация, от имени которой выступает Министерство Российской Федерации по делам гражданской обороны, чрезвычайным ситуациям и ликвидации последствий стихийных бедствий Прибор поиска пострадавших под завалами разрушенных зданий тспп "завал"

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4164628A (en) * 1977-06-06 1979-08-14 International Telephone And Telegraph Corporation Processor for multiple, continuous, spread spectrum signals
US5109390A (en) * 1989-11-07 1992-04-28 Qualcomm Incorporated Diversity receiver in a cdma cellular telephone system
JP3295454B2 (ja) * 1992-08-05 2002-06-24 パイオニア株式会社 Ｇｐｓ受信機の信号処理方法
US5654979A (en) * 1995-01-13 1997-08-05 Qualcomm Incorporated Cell site demodulation architecture for a spread spectrum multiple access communication systems
US5764687A (en) * 1995-06-20 1998-06-09 Qualcomm Incorporated Mobile demodulator architecture for a spread spectrum multiple access communication system

Also Published As

Publication number Publication date
FI962258A0 (sv) 1996-05-29
DE69531096T2 (de) 2004-04-08
CN1135815A (zh) 1996-11-13
AU707834B2 (en) 1999-07-22
CN1096157C (zh) 2002-12-11
FI114123B (sv) 2004-08-13
BR9506390A (pt) 1997-09-16
AU3945195A (en) 1996-04-26
JPH09506234A (ja) 1997-06-17
DK0732013T3 (da) 2003-09-15
AU688625B2 (en) 1998-03-12
RU2149509C1 (ru) 2000-05-20
KR100385004B1 (ko) 2003-10-22
US20010046205A1 (en) 2001-11-29
MX9602026A (es) 1997-03-29
TW294866B (sv) 1997-01-01
SI0732013T1 (en) 2004-06-30
PT732013E (pt) 2003-11-28
MY120873A (en) 2005-12-30
EP0732013B1 (en) 2003-06-18
AU6997798A (en) 1998-07-30
DE69531096D1 (de) 2003-07-24
KR960706725A (ko) 1996-12-09
EP0732013A1 (en) 1996-09-18
HK1015198A1 (en) 1999-10-08
CA2174243A1 (en) 1996-04-11
FI962258A (sv) 1996-07-22
ES2201123T3 (es) 2004-03-16
ZA957858B (en) 1996-04-22
WO1996010873A1 (en) 1996-04-11
ATE243395T1 (de) 2003-07-15

Similar Documents

Publication Publication Date Title
ZA957858B (en) Multipath search processor for a spread spectrum multiple access communication system
MY113603A (en) Method of searching for a bursty signal
MY113224A (en) Cell site demodulator architecture for a spread spectrum multiple access communication system
US7613227B2 (en) Reverse link correlation filter in wireless communication systems
US6717930B1 (en) Cell search procedure for time division duplex communication systems using code division multiple access
KR100347205B1 (ko) 무선 신호에서 데이터를 복구하는 수신기 및 방법
US20030189972A1 (en) Method and device for interference cancellation in a CDMA wireless communication system
DE69937838T2 (de) Ein cdma-empfänger der nachführeinrichtungen zwischen mehreren rake-zweigen teilt
CA2278299A1 (en) Channel estimating apparatus, and cdma receiver and cdma transceiver each having the apparatus
HK1015197A1 (en) Method and apparatus for performing code acquisition in a cdma communications system.
GB2345416B (en) Wireless communication apparatus and power consumption reducing method thereof
WO2000002397A3 (en) Device and method for cancelling code interference in a cdma communication system
DK1201042T3 (da) Udbalancering af CDMA multipel tilgangsinterferens under anvendelse af signalestimering
WO2003032512A1 (en) Acquisition circuit for low chip rate option for mobile telecommunication system
SE9700909D0 (sv) Synkroniseringsackvisitionsmetod och anordning för korrelationsdemodulering
EP1850497A2 (en) Cell search procedure for time division duplex communication systems using code division multiple access
CN1886957A (zh) 一种用于对td－scdma系统下行链路进行频率估测的装置和方法
MY122627A (en) Apparatus and methods for receiving information using variable length accumulation searchers
US20080151839A1 (en) Frequency Synchronization During Cell Search in a Universal Mobile Telephone System Receiver
EP1128568A3 (en) Spectrum spread communication synchronization apparatus using frequency offset
EP0957594A3 (en) Code division multiple access mobile communication system.
Sheen et al. Cell search for 3GPP W-CDMA/FDD with chip clock shift and non-ideal sampling
CA2220224A1 (en) Method of receiving and searching a signal transmitting in bursts
KR100279671B1 (ko) 이동국에서의 기지국 부호탐색방법 및 이동국 수신장치
CA2405295A1 (en) Channel estimation unit, and cdma receiver and cdma transceiver with channel estimation unit

Legal Events

Date Code Title Description
FF Patent granted
FF Patent granted
KB Patent renewed
KB Patent renewed
KB Patent renewed
EXP Patent expired