DE602004029379D1 - Verfahren und Vorrichtungen zum beseitigen von Code-Alias-Elementen bei Verwendung von Kurzsynchronisationscodes - Google Patents

Verfahren und Vorrichtungen zum beseitigen von Code-Alias-Elementen bei Verwendung von Kurzsynchronisationscodes

Info

Publication number
DE602004029379D1
DE602004029379D1 DE602004029379T DE602004029379T DE602004029379D1 DE 602004029379 D1 DE602004029379 D1 DE 602004029379D1 DE 602004029379 T DE602004029379 T DE 602004029379T DE 602004029379 T DE602004029379 T DE 602004029379T DE 602004029379 D1 DE602004029379 D1 DE 602004029379D1
Authority
DE
Germany
Prior art keywords
sequence
constrained portion
methods
communication channel
sync codes
Prior art date
Legal status (The legal status 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 status listed.)
Active
Application number
DE602004029379T
Other languages
English (en)
Inventor
Haitao Zhang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qualcomm Inc
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 DE602004029379D1 publication Critical patent/DE602004029379D1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0212—Channel estimation of impulse response
    • 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
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0224—Channel estimation using sounding signals
    • H04L25/0228—Channel estimation using sounding signals with direct estimation from sounding signals
    • H04L25/023—Channel estimation using sounding signals with direct estimation from sounding signals with extension to other symbols
    • 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
DE602004029379T 2003-08-28 2004-08-12 Verfahren und Vorrichtungen zum beseitigen von Code-Alias-Elementen bei Verwendung von Kurzsynchronisationscodes Active DE602004029379D1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/650,271 US7869488B2 (en) 2003-08-28 2003-08-28 Method and apparatus for removing code aliases when using short synchronization codes
PCT/US2004/026349 WO2005025164A1 (en) 2003-08-28 2004-08-12 Method and apparatus for removing code aliases when using short synchronization codes

Publications (1)

Publication Number Publication Date
DE602004029379D1 true DE602004029379D1 (de) 2010-11-11

Family

ID=34217117

Family Applications (1)

Application Number Title Priority Date Filing Date
DE602004029379T Active DE602004029379D1 (de) 2003-08-28 2004-08-12 Verfahren und Vorrichtungen zum beseitigen von Code-Alias-Elementen bei Verwendung von Kurzsynchronisationscodes

Country Status (9)

Country Link
US (1) US7869488B2 (de)
EP (3) EP1665692B1 (de)
JP (1) JP4486089B2 (de)
AT (1) ATE483306T1 (de)
CA (1) CA2535999A1 (de)
DE (1) DE602004029379D1 (de)
HK (1) HK1094841A1 (de)
RU (1) RU2371870C2 (de)
WO (1) WO2005025164A1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI20070031L (fi) * 2007-01-12 2008-07-13 Eigenor Oy Tietoliikenne- ja kaukokartoitussovelluksia signaaleilla, jotka on koodattu täydellisillä koodeilla
US9048936B2 (en) 2012-01-02 2015-06-02 Qualcomm Incorporated Systems and methods for managing on-time of wireless receivers
CN107547106B (zh) * 2017-10-16 2019-08-13 杭州电子科技大学 多速率长短码直扩码分多址信号的长短码估计方法

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5623511A (en) * 1994-08-30 1997-04-22 Lucent Technologies Inc. Spread spectrum code pulse position modulated receiver having delay spread compensation
US5737327A (en) 1996-03-29 1998-04-07 Motorola, Inc. Method and apparatus for demodulation and power control bit detection in a spread spectrum communication system
US5901185A (en) 1996-04-15 1999-05-04 Ericsson Inc. Systems and methods for data-augmented, pilot-symbol-assisted radiotelephone communications
US6005886A (en) 1996-08-05 1999-12-21 Digital Radio Communications Corp. Synchronization-free spread-spectrum demodulator
JP3441638B2 (ja) 1997-12-18 2003-09-02 株式会社エヌ・ティ・ティ・ドコモ チャネル推定値を求める装置および方法
GB9818378D0 (en) 1998-08-21 1998-10-21 Nokia Mobile Phones Ltd Receiver
US6721293B1 (en) * 1999-03-10 2004-04-13 Nokia Corporation Unsupervised adaptive chip separation filter for CDMA terminal
US6515978B1 (en) * 1999-04-19 2003-02-04 Lucent Technologies Inc. Methods and apparatus for downlink diversity in CDMA using Walsh codes
FI112831B (fi) 1999-04-28 2004-01-15 Nokia Corp Menetelmä kanavaestimaatin muodostamiseksi ja vastaanotin
WO2001061902A1 (fr) 2000-02-17 2001-08-23 Linkair Communications, Inc. Procede de codage a acces multiple par etalement du spectre faisant intervenir une fenetre de correlation zero
US6661857B1 (en) 2000-07-10 2003-12-09 Intersil Americas Inc. Rapid estimation of wireless channel impulse response
RU2192094C1 (ru) 2001-02-05 2002-10-27 Гармонов Александр Васильевич Способ когерентной разнесенной передачи сигнала
US6625203B2 (en) 2001-04-30 2003-09-23 Interdigital Technology Corporation Fast joint detection
GB2376855A (en) 2001-06-20 2002-12-24 Sony Uk Ltd Determining symbol synchronisation in an OFDM receiver in response to one of two impulse response estimates
US6956893B2 (en) 2001-08-20 2005-10-18 Motorola, Inc. Linear minimum mean square error equalization with interference cancellation for mobile communication forward links utilizing orthogonal codes covered by long pseudorandom spreading codes
US7301993B2 (en) * 2002-09-13 2007-11-27 Broadcom Corporation Channel estimation in a spread spectrum receiver

Also Published As

Publication number Publication date
EP2194682A1 (de) 2010-06-09
EP1665692A1 (de) 2006-06-07
EP1665692B1 (de) 2010-09-29
US7869488B2 (en) 2011-01-11
JP4486089B2 (ja) 2010-06-23
RU2006109711A (ru) 2007-10-20
ATE483306T1 (de) 2010-10-15
HK1094841A1 (en) 2007-04-13
RU2371870C2 (ru) 2009-10-27
JP2007504712A (ja) 2007-03-01
CA2535999A1 (en) 2005-03-17
EP2194681A1 (de) 2010-06-09
WO2005025164A1 (en) 2005-03-17
US20050047490A1 (en) 2005-03-03

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