ECSP077211A - Método y aparato para cancelar la interferencia piloto en un sistema de comunicación inalámbrica - Google Patents

Método y aparato para cancelar la interferencia piloto en un sistema de comunicación inalámbrica

Info

Publication number
ECSP077211A
ECSP077211A EC2007007211A ECSP077211A ECSP077211A EC SP077211 A ECSP077211 A EC SP077211A EC 2007007211 A EC2007007211 A EC 2007007211A EC SP077211 A ECSP077211 A EC SP077211A EC SP077211 A ECSP077211 A EC SP077211A
Authority
EC
Ecuador
Prior art keywords
pilot
pilot interference
signal
data samples
wireless communication
Prior art date
Application number
EC2007007211A
Other languages
English (en)
Inventor
Jilei Hou
Paul E Bender
Alessandro Vanelli Coralli
Henry David Pfister
John E Smee
Roberto Padovani
Brian K Butler
Jeffrey A Levin
Thomas B Wilborn
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 ECSP077211A publication Critical patent/ECSP077211A/es

Links

Classifications

    • 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
    • H04B1/7103—Interference-related aspects the interference being multiple access interference
    • H04B1/7107—Subtractive interference cancellation
    • 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
    • H04B2201/70701—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation featuring pilot assisted reception

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Noise Elimination (AREA)
  • Radio Transmission System (AREA)

Abstract

Métodos y sistemas para estimar y cancelar la interferencia piloto en un sistema de comunicación inalámbrica (por ejemplo CDMA). En un método, una señal recibida comprendida de un número de instancias de señal, cada una incluyendo un piloto, es inicuamente procesada para proporcionar muestras de datos. Cada interferencia piloto de la instancia de señal puede ser estimada mediante la diseminación de las muestras de datos con una secuencia diseminadora para la instancia de señal, canalizando los datos de-diseminados para proporcionar símbolos pilotos, filtrar los símbolos pilotos para estimar la respuesta del canal a la instancia de señal, y multiplicar la respuesta del canal estimada con la secuencia de diseminación. Los estimados de la interferencia piloto debido a una pluralidad de multi-direccionales interferentes se acumulan para derivar la interferencia piloto total, la cual se resta de las muestras de datos para proporcionar muestras de datos piloto-canceladas. Estas muestras son entonces procesadas para derivar datos de-modulados para cada una de al menos una instancia de señal (deseado) en la señal recibida
EC2007007211A 2004-06-30 2007-01-29 Método y aparato para cancelar la interferencia piloto en un sistema de comunicación inalámbrica ECSP077211A (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US58452704P 2004-06-30 2004-06-30

Publications (1)

Publication Number Publication Date
ECSP077211A true ECSP077211A (es) 2007-02-28

Family

ID=34993281

Family Applications (1)

Application Number Title Priority Date Filing Date
EC2007007211A ECSP077211A (es) 2004-06-30 2007-01-29 Método y aparato para cancelar la interferencia piloto en un sistema de comunicación inalámbrica

Country Status (13)

Country Link
EP (1) EP1766801A1 (es)
JP (1) JP4659828B2 (es)
CN (1) CN101027850B (es)
AU (1) AU2005260653A1 (es)
BR (1) BRPI0512822A (es)
CA (1) CA2572090A1 (es)
EC (1) ECSP077211A (es)
IL (1) IL180341A0 (es)
MX (1) MX2007000276A (es)
NO (1) NO20070422L (es)
RU (1) RU2007103333A (es)
WO (1) WO2006004948A1 (es)
ZA (1) ZA200700673B (es)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8611305B2 (en) 2005-08-22 2013-12-17 Qualcomm Incorporated Interference cancellation for wireless communications
US9071344B2 (en) 2005-08-22 2015-06-30 Qualcomm Incorporated Reverse link interference cancellation
US8737451B2 (en) 2007-03-09 2014-05-27 Qualcomm Incorporated MMSE MUD in 1x mobiles
US8571553B2 (en) 2007-07-16 2013-10-29 Qualcomm Incorporated Methods and apparatus for resolving pilot pseudorandom noise code conflicts in a communication system
US8995417B2 (en) 2008-06-09 2015-03-31 Qualcomm Incorporated Increasing capacity in wireless communication
US9277487B2 (en) 2008-08-01 2016-03-01 Qualcomm Incorporated Cell detection with interference cancellation
US9237515B2 (en) 2008-08-01 2016-01-12 Qualcomm Incorporated Successive detection and cancellation for cell pilot detection
US9160577B2 (en) 2009-04-30 2015-10-13 Qualcomm Incorporated Hybrid SAIC receiver
US8787509B2 (en) 2009-06-04 2014-07-22 Qualcomm Incorporated Iterative interference cancellation receiver
US8831149B2 (en) 2009-09-03 2014-09-09 Qualcomm Incorporated Symbol estimation methods and apparatuses
EP2505017B1 (en) 2009-11-27 2018-10-31 Qualcomm Incorporated Increasing capacity in wireless communications
KR101376676B1 (ko) 2009-11-27 2014-03-20 퀄컴 인코포레이티드 무선 통신들에서의 용량 증가
US8817924B2 (en) * 2010-09-23 2014-08-26 Qualcomm Incorporated Iterative pilot tone cancellation for improved channel estimation and decoding
CN102195673A (zh) * 2011-02-25 2011-09-21 福建三元达通讯股份有限公司 一种导频污染消除方法
JP5423866B2 (ja) * 2012-11-20 2014-02-19 ヤマハ株式会社 相関器
JP6518657B2 (ja) 2013-06-25 2019-05-22 エルジー エレクトロニクス インコーポレイティド 全二重無線方式を支援する無線接続システムにおいて自己干渉測定方法及び装置
US20150134582A1 (en) * 2013-11-08 2015-05-14 Qualcomm Incorporated Implementing synaptic learning using replay in spiking neural networks
CN104753558A (zh) * 2013-12-31 2015-07-01 中兴通讯股份有限公司 一种解扰解扩的方法及装置
US11234147B2 (en) * 2016-09-30 2022-01-25 Telefonaktiebolaget Lm Ericsson (Publ) Coherence bandwidth adaptive CSI reporting
CN111323794B (zh) * 2020-03-21 2023-05-05 哈尔滨工程大学 一种基于周期重采样的周期调频干扰消除方法
CN113507427B (zh) * 2021-08-18 2023-07-25 南京天际易达通信技术有限公司 一种适用于π/4-DQPSK的载波跟踪方法、设备及可读存储介质
CN114978821B (zh) * 2022-05-18 2024-04-23 西安交通大学 面向6g智能反射表面辅助通信系统的协同信道估计方法
CN114710382B (zh) * 2022-06-07 2022-08-26 四川创智联恒科技有限公司 一种时分双工多天线系统的干扰消除方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6067292A (en) * 1996-08-20 2000-05-23 Lucent Technologies Inc Pilot interference cancellation for a coherent wireless code division multiple access receiver
JP2967571B1 (ja) * 1998-05-01 1999-10-25 日本電気株式会社 Ｃｄｍａマルチユーザ受信装置と通信システム
US7190749B2 (en) * 2001-06-06 2007-03-13 Qualcomm Incorporated Method and apparatus for canceling pilot interference in a wireless communication system
CN1131615C (zh) * 2002-02-26 2003-12-17 东南大学 码分多址系统导频干扰抵消方法和装置

Also Published As

Publication number Publication date
AU2005260653A1 (en) 2006-01-12
CA2572090A1 (en) 2006-01-12
BRPI0512822A (pt) 2008-04-08
JP4659828B2 (ja) 2011-03-30
JP2008505554A (ja) 2008-02-21
CN101027850B (zh) 2011-09-28
MX2007000276A (es) 2007-06-15
NO20070422L (no) 2007-03-30
EP1766801A1 (en) 2007-03-28
WO2006004948A1 (en) 2006-01-12
ZA200700673B (en) 2008-09-25
RU2007103333A (ru) 2008-08-10
IL180341A0 (en) 2007-07-04
CN101027850A (zh) 2007-08-29

Similar Documents

Publication Publication Date Title
ECSP077211A (es) Método y aparato para cancelar la interferencia piloto en un sistema de comunicación inalámbrica
GB201208295D0 (en) A wireless communications apparatus, a method and a communication system for performing relay selection
CL2006001941A1 (es) Metodo y aparato para la estimacion de un canal y del nivel de interferencia de un sistema de comunicacion inalambrica.
PH12017501667B1 (en) Control channel based broadcast messaging
PH12020500538A1 (en) Method for selecting carrier and communication device
ES2370229T3 (es) Método y disposición para mitigar interferencias intercelulares en un sistema de comunicaciones celular.
WO2015054201A3 (en) Interference estimation resource definition and usage for enhanced receivers
WO2011021852A3 (en) Method of relay node using reference signal and relay node using the method
MX2019010748A (es) Soporte para portadoras con superposicion de frecuencia.
ATE483307T1 (de) Kommunikationsempfänger mit einem adaptiven entzerrer, welcher kanalschätzung verwendet
WO2014110208A3 (en) Broadcast and paging channels for machine type communication
WO2014027324A3 (en) Methods, systems and devices for obtaining system information in a wireless network
WO2011093644A3 (en) Method and apparatus for allocating resources in a wireless communication system
WO2011074807A3 (en) Systems and methods for transmitting channel quality information in wireless communication systems
WO2011053073A3 (en) Method and apparatus for transmitting dedicated reference signal
DE60204766D1 (de) Verfahren und systeme zur interferenzreduktion mittels gleichkanalstörungskategorizierung
WO2013032202A3 (ko) 하향링크 신호 수신 방법 및 사용자기기와, 하향링크 신호 전송 방법 및 기지국
PH12016500952A1 (en) Downlink subframe shortening in time-division duplex (tdd) systems
WO2013009110A3 (en) Method of user equipment monitoring control information in a multiple node system and user equipment using the method
JP2015508594A5 (es)
ATE467287T1 (de) Verfahren zur reduktion der gegenseitigen interferenz von netzteilnehmern in funknetzen
IN2015MN00749A (es)
GB0721429D0 (en) Processing signals in a wireless communications environment
TR201908986T4 (tr) Uplink radyo kaynaklarının tahsisi için usul ve sistem.
EP2731288A4 (en) BASIC STATION, WIRELESS END UNIT, METHOD OF VALUATION OF CHANNEL VALUES, PILOT SIGNAL TRANSMISSION METHOD AND WIRELESS COMMUNICATION SYSTEM