JP4486089B2 - 短い同期符号使用時の符号エイリアス除去方法及び装置 - Google Patents

短い同期符号使用時の符号エイリアス除去方法及び装置 Download PDF

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Publication number
JP4486089B2
JP4486089B2 JP2006524703A JP2006524703A JP4486089B2 JP 4486089 B2 JP4486089 B2 JP 4486089B2 JP 2006524703 A JP2006524703 A JP 2006524703A JP 2006524703 A JP2006524703 A JP 2006524703A JP 4486089 B2 JP4486089 B2 JP 4486089B2
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Japan
Prior art keywords
code
impulse response
communication channel
receiver
codes
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JP2006524703A
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Japanese (ja)
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JP2007504712A (ja
Inventor
ジャン、ハイタオ
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Qualcomm Inc
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Qualcomm Inc
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    • 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
JP2006524703A 2003-08-28 2004-08-12 短い同期符号使用時の符号エイリアス除去方法及び装置 Active JP4486089B2 (ja)

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 (2)

Publication Number Publication Date
JP2007504712A JP2007504712A (ja) 2007-03-01
JP4486089B2 true JP4486089B2 (ja) 2010-06-23

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ID=34217117

Family Applications (1)

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JP2006524703A Active JP4486089B2 (ja) 2003-08-28 2004-08-12 短い同期符号使用時の符号エイリアス除去方法及び装置

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US (1) US7869488B2 (US07869488-20110111-P00001.png)
EP (3) EP1665692B1 (US07869488-20110111-P00001.png)
JP (1) JP4486089B2 (US07869488-20110111-P00001.png)
AT (1) ATE483306T1 (US07869488-20110111-P00001.png)
CA (1) CA2535999A1 (US07869488-20110111-P00001.png)
DE (1) DE602004029379D1 (US07869488-20110111-P00001.png)
HK (1) HK1094841A1 (US07869488-20110111-P00001.png)
RU (1) RU2371870C2 (US07869488-20110111-P00001.png)
WO (1) WO2005025164A1 (US07869488-20110111-P00001.png)

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 (en) 2010-06-09
EP1665692A1 (en) 2006-06-07
EP1665692B1 (en) 2010-09-29
US7869488B2 (en) 2011-01-11
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
DE602004029379D1 (de) 2010-11-11
CA2535999A1 (en) 2005-03-17
EP2194681A1 (en) 2010-06-09
WO2005025164A1 (en) 2005-03-17
US20050047490A1 (en) 2005-03-03

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