TR200002016T2 - Doğrudan dizi yayılan spektrumlu iletişim sistemlerinde çok-yollu gecikme tahmini için yöntem ve aygıt - Google Patents

Doğrudan dizi yayılan spektrumlu iletişim sistemlerinde çok-yollu gecikme tahmini için yöntem ve aygıt

Info

Publication number
TR200002016T2
TR200002016T2 TR2000/02016T TR200002016T TR200002016T2 TR 200002016 T2 TR200002016 T2 TR 200002016T2 TR 2000/02016 T TR2000/02016 T TR 2000/02016T TR 200002016 T TR200002016 T TR 200002016T TR 200002016 T2 TR200002016 T2 TR 200002016T2
Authority
TR
Turkey
Prior art keywords
delay
delay estimates
estimates
communication systems
delay estimation
Prior art date
Application number
TR2000/02016T
Other languages
English (en)
Inventor
Sourour Essam
Bottomley Greg
Ramesh Rajaaram
Chennakeshu Sandeep
Original Assignee
Ericsson 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 Ericsson Inc. filed Critical Ericsson Inc.
Publication of TR200002016T2 publication Critical patent/TR200002016T2/tr

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
    • H04B1/711—Interference-related aspects the interference being multi-path interference
    • 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
    • H04B1/7113—Determination of path profile
    • 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
    • H04B1/709—Correlator structure

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Noise Elimination (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Complex Calculations (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

Bir çok yollu solan kanalda nakledilen bir dogrudan dizi yayilan spektrumlu (DS-SS) sinyalin çok-yollu gecikme tahmini, yeni bir gecikme tahmininin saptanmasini için sinyal zarfinin ölçülmesiyle gerçeklestirilmektedir. Gecikme tahminleri ayni zamanda isin kuvveti düzeyinde daha kuvvetli isinlarin daha zayif olanlari üzerindeki etkisinin çikartilmasiyla elde edilmektedir. Bu çikartma yaklasimi, gecikme tahminlerinin daha fazla inceltilmesine olanak saglanarak tekrarli bir sekilde gerçeklestirilebilmektedir. Gecikme tahminleri ayni zamanda bir modellenmis baginti fonksiyonu ve bir ölçülmüs baginti fonksiyonu arasindaki ortalama kare hatasinin (MSE) minimize edilmesiyle de saptanabilmektedir. Minimum ortalama kare hata (MMSE)yaklasimi, gecikme tahminlerinin daha inceltilmesi için tekrarli bir sekilde yerine getirilebilmektedir. Maksimum muhtemel (ML) gecikme tahminleri ayni zamanda, nakletme ve alma pals sekilleri ile ilgili yan bilgilerden istifade edilerek de elde edilebilmektedir
TR2000/02016T 1998-01-12 1999-01-12 Doğrudan dizi yayılan spektrumlu iletişim sistemlerinde çok-yollu gecikme tahmini için yöntem ve aygıt TR200002016T2 (tr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/005,580 US6839378B1 (en) 1998-01-12 1998-01-12 Method and apparatus for multipath delay estimation in direct sequence spread spectrum communication systems

Publications (1)

Publication Number Publication Date
TR200002016T2 true TR200002016T2 (tr) 2001-01-22

Family

ID=21716597

Family Applications (1)

Application Number Title Priority Date Filing Date
TR2000/02016T TR200002016T2 (tr) 1998-01-12 1999-01-12 Doğrudan dizi yayılan spektrumlu iletişim sistemlerinde çok-yollu gecikme tahmini için yöntem ve aygıt

Country Status (15)

Country Link
US (1) US6839378B1 (tr)
EP (1) EP1048127B1 (tr)
JP (1) JP2002501323A (tr)
KR (1) KR100752015B1 (tr)
CN (1) CN1137551C (tr)
AR (1) AR015508A1 (tr)
AU (1) AU747307B2 (tr)
BR (1) BRPI9906840B1 (tr)
CO (1) CO4820425A1 (tr)
DE (1) DE69929032T2 (tr)
EE (1) EE200000413A (tr)
IL (1) IL137263A (tr)
MY (1) MY124669A (tr)
TR (1) TR200002016T2 (tr)
WO (1) WO1999035763A1 (tr)

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CN101170527B (zh) * 2006-10-24 2010-07-14 中兴通讯股份有限公司 一种基于mmse的mlse简化检测方法及其装置
JP4623027B2 (ja) * 2007-03-06 2011-02-02 三菱電機株式会社 測距装置及び測位装置並びに測距方法及び測位方法
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Also Published As

Publication number Publication date
AR015508A1 (es) 2001-05-02
KR20010034086A (ko) 2001-04-25
MY124669A (en) 2006-06-30
BRPI9906840B1 (pt) 2017-05-30
BR9906840A (pt) 2000-10-17
KR100752015B1 (ko) 2007-08-28
AU2216799A (en) 1999-07-26
IL137263A0 (en) 2001-07-24
CN1288613A (zh) 2001-03-21
EP1048127B1 (en) 2005-12-21
IL137263A (en) 2005-07-25
US6839378B1 (en) 2005-01-04
CO4820425A1 (es) 1999-07-28
DE69929032D1 (de) 2006-01-26
EE200000413A (et) 2001-12-17
JP2002501323A (ja) 2002-01-15
AU747307B2 (en) 2002-05-16
WO1999035763A1 (en) 1999-07-15
CN1137551C (zh) 2004-02-04
EP1048127A1 (en) 2000-11-02
HK1035086A1 (en) 2001-11-09
DE69929032T2 (de) 2006-08-24

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