[go: up one dir, main page]

BRPI0512822A - método e equipamento para cancelamento de interferência de piloto em um sistema de comunicação sem fio - Google Patents

método e equipamento para cancelamento de interferência de piloto em um sistema de comunicação sem fio

Info

Publication number
BRPI0512822A
BRPI0512822A BRPI0512822-6A BRPI0512822A BRPI0512822A BR PI0512822 A BRPI0512822 A BR PI0512822A BR PI0512822 A BRPI0512822 A BR PI0512822A BR PI0512822 A BRPI0512822 A BR PI0512822A
Authority
BR
Brazil
Prior art keywords
pilot
pilot interference
wireless communication
data samples
occurrence
Prior art date
Application number
BRPI0512822-6A
Other languages
English (en)
Inventor
Alessandro Vanelli Coralli
Henry David Pfister
Jilei Hou
John E Smee
Roberto Padovani
Brian K Butler
Jeffrey A Levin
Thomas B Wilborn
Paul E Bender
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 BRPI0512822A publication Critical patent/BRPI0512822A/pt

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)
  • Noise Elimination (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radio Transmission System (AREA)

Abstract

MéTODO E EQUIPAMENTO PARA CANCELAMENTO DE INTERFERêNCIA DE PILOTO EM UM SISTEMA. DE COMUNICAçãO SEM FIO. Métodos e sistemas para estimar e cancelar interferência de piloto em um sistema de comunicação sem fio (por exemplo, CDMA) . Em um método, um sinal recebido processado para fornecer amostras de dados. A interferência de piloto de cada ocorrência de sinal pode ser estimada por desespalhar as amostras de dados com uma seqüência de espalhamento para a ocorrência de sinal, canalizar os dados desespalhados para fornecer símbolos piloto, filtrar os símbolos piloto para estimar a resposta de canal da ocorrência de sinal, e multiplicar a resposta de canal estimada com a seqüência de espalhamento. As estimativas de interferência de piloto devido a uma pluralidade de multipercursos interferentes são acumuladas para derivar a interferência de piloto total, que é subtraída das amostras de dados para fornecer amostras de dados com piloto cancelado. Essas amostras são então processadas para derivar dados de modulados para cada de pelo menos uma ocorrência de sinal (desejada) no sinal recebido.
BRPI0512822-6A 2004-06-30 2005-06-30 método e equipamento para cancelamento de interferência de piloto em um sistema de comunicação sem fio BRPI0512822A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US58452704P 2004-06-30 2004-06-30
PCT/US2005/023307 WO2006004948A1 (en) 2004-06-30 2005-06-30 Method and apparatus for canceling pilot interference in a wireless communication system

Publications (1)

Publication Number Publication Date
BRPI0512822A true BRPI0512822A (pt) 2008-04-08

Family

ID=34993281

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0512822-6A BRPI0512822A (pt) 2004-06-30 2005-06-30 método e equipamento para cancelamento de interferência de piloto em um sistema de comunicação sem fio

Country Status (13)

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

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
US9014152B2 (en) 2008-06-09 2015-04-21 Qualcomm Incorporated Increasing capacity in 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
US9237515B2 (en) 2008-08-01 2016-01-12 Qualcomm Incorporated Successive detection and cancellation for cell pilot detection
US9277487B2 (en) * 2008-08-01 2016-03-01 Qualcomm Incorporated Cell detection with interference cancellation
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
CN102668612B (zh) 2009-11-27 2016-03-02 高通股份有限公司 增加无线通信中的容量
JP2013512593A (ja) 2009-11-27 2013-04-11 クゥアルコム・インコーポレイテッド 無線通信における容量の増加
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
WO2014208953A1 (ko) 2013-06-25 2014-12-31 엘지전자 주식회사 전 이중 무선 방식을 지원하는 무선 접속 시스템에서 자기 간섭 측정 방법 및 장치
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
EP3520232A1 (en) * 2016-09-30 2019-08-07 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
CN101027850A (zh) 2007-08-29
JP2008505554A (ja) 2008-02-21
IL180341A0 (en) 2007-07-04
EP1766801A1 (en) 2007-03-28
RU2007103333A (ru) 2008-08-10
MX2007000276A (es) 2007-06-15
CA2572090A1 (en) 2006-01-12
AU2005260653A1 (en) 2006-01-12
JP4659828B2 (ja) 2011-03-30
ECSP077211A (es) 2007-02-28
WO2006004948A1 (en) 2006-01-12
NO20070422L (no) 2007-03-30
CN101027850B (zh) 2011-09-28
ZA200700673B (en) 2008-09-25

Similar Documents

Publication Publication Date Title
BRPI0512822A (pt) método e equipamento para cancelamento de interferência de piloto em um sistema de comunicação sem fio
GB2497474A (en) Method and appartus for enhancing the accuracy of the estimat ed covariance matrix in wideband-CDMA systems
CL2006001941A1 (es) Metodo y aparato para la estimacion de un canal y del nivel de interferencia de un sistema de comunicacion inalambrica.
WO2010048430A3 (en) System and method for identifying trends in web feeds collected from various content servers
WO2013061162A3 (en) System and method of operating mode self-adaptation
BRPI0507148A (pt) filtragem no tempo para mitigação de retardo em excesso em sistemas ofdm
FR2872653B1 (fr) Systeme et procedes de securisation de postes informatiques et/ou de reseaux de communications
BRPI0407566A (pt) estimação de canal de um sinal cdma recebido de multipercursor
WO2007106119A3 (en) System and method for channel estimation
WO2015032313A3 (en) System and method for channel estimation for generalized frequency division multiplexing (gfdm)
TW200737773A (en) A method for aperiodic mobile assisted sleep mode
DE602006019975D1 (de) System und verfahren zur iterativen eliminierung von mehrpfad-interferenzen
FR2907953B1 (fr) Systeme de guidage d'un aeronef.
DE602004029333D1 (de) Kommunikationsempfänger mit einem adaptiven entzerrer, welcher kanalschätzung verwendet
WO2008091785A3 (en) System and method for determining data entropy to identify malware
WO2014052756A3 (en) Identifying and mitigating malicious network threats
ATE511296T1 (de) Verfahren zum detektieren von anomalien in einem kommunikationssystem, das numerische paketmerkmale verwendet
DK2308419T3 (da) Fremgangsmåde til bedømmelse af farvningstilstandene for dyresperm, som skal sorteres.
EP4103973A4 (en) SYSTEM AND METHOD FOR RECONVERGENCE OF GNSS POSITION ESTIMATES
TW200746688A (en) Rate control for multi-channel communication systems
EP2115628A4 (en) SYSTEM AND METHOD FOR CREATING AUTOMATIC INPUTS FOR BLOGS, WEB PAGES OR FILE SHARING SITES BASED ON GAMING EVENTS
EP1862533A4 (en) SYSTEM, METHOD AND PROGRAM FOR ESTIMATING CELL CULTURES
NO20073714L (no) Montasjeglidningsinnsats for anvendelse i en glidesko av en heisinstallasjon, fremgangsmate for a plassere en heisinstallasjon i drift, og tilsvarende montasjesett og tilhorende heisinstallasjon
WO2007047413A3 (en) Method and system for detecting a change in device attachment
FR2899325B1 (fr) Systeme de guidage d'un aeronef.

Legal Events

Date Code Title Description
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE AS 5A, 6A E 7A ANUIDADES.

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 2158 DE 15/05/2012.