DE602004011777D1 - System, verfahren und computerprogramm zum demodulieren von quadraturamplitudenmodulierten signalen - Google Patents

System, verfahren und computerprogramm zum demodulieren von quadraturamplitudenmodulierten signalen

Info

Publication number
DE602004011777D1
DE602004011777D1 DE602004011777T DE602004011777T DE602004011777D1 DE 602004011777 D1 DE602004011777 D1 DE 602004011777D1 DE 602004011777 T DE602004011777 T DE 602004011777T DE 602004011777 T DE602004011777 T DE 602004011777T DE 602004011777 D1 DE602004011777 D1 DE 602004011777D1
Authority
DE
Germany
Prior art keywords
computer program
modulated signals
quadrature amplitude
amplitude modulated
signal
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.)
Expired - Fee Related
Application number
DE602004011777T
Other languages
English (en)
Other versions
DE602004011777T2 (de
Inventor
Thomas J Kenney
Gillyoung Jung
Jean-Marie Tran
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.)
Nokia Oyj
Original Assignee
Nokia Oyj
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 Nokia Oyj filed Critical Nokia Oyj
Publication of DE602004011777D1 publication Critical patent/DE602004011777D1/de
Application granted granted Critical
Publication of DE602004011777T2 publication Critical patent/DE602004011777T2/de
Expired - Fee Related 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
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/38—Demodulator circuits; Receiver circuits
    • H04L27/3809—Amplitude regulation arrangements
    • 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
DE602004011777T 2003-06-27 2004-06-25 System, verfahren und computerprogramm zum demodulieren von quadraturamplitudenmodulierten signalen Expired - Fee Related DE602004011777T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US608697 2003-06-27
US10/608,697 US7289551B2 (en) 2003-06-27 2003-06-27 System, method and computer program product for demodulating quadrature amplitude modulated signals
PCT/US2004/020494 WO2005004423A1 (en) 2003-06-27 2004-06-25 System, method and computer program product for demodulating quadrature amplitude modulated signals

Publications (2)

Publication Number Publication Date
DE602004011777D1 true DE602004011777D1 (de) 2008-03-27
DE602004011777T2 DE602004011777T2 (de) 2009-02-05

Family

ID=33540649

Family Applications (1)

Application Number Title Priority Date Filing Date
DE602004011777T Expired - Fee Related DE602004011777T2 (de) 2003-06-27 2004-06-25 System, verfahren und computerprogramm zum demodulieren von quadraturamplitudenmodulierten signalen

Country Status (6)

Country Link
US (1) US7289551B2 (de)
EP (1) EP1647117B1 (de)
CN (1) CN1833416A (de)
AT (1) ATE386392T1 (de)
DE (1) DE602004011777T2 (de)
WO (1) WO2005004423A1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7502426B2 (en) * 2003-09-09 2009-03-10 Interdigital Technology Corporation Method for estimating signal magnitude, noise power, and signal-to-noise ratio of received signals
US7633913B2 (en) * 2004-11-05 2009-12-15 Nextel Communications Inc. Wireless communication system using joint detection to compensate for poor RF condition based on user priority
US7924778B2 (en) * 2005-08-12 2011-04-12 Nextel Communications Inc. System and method of increasing the data throughput of the PDCH channel in a wireless communication system
US7609754B2 (en) * 2005-08-30 2009-10-27 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for received communication signal processing
KR20120132994A (ko) 2011-05-30 2012-12-10 삼성전자주식회사 소프트 디맵핑 장치 및 방법

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69432447T2 (de) * 1993-01-19 2003-12-24 Nippon Telegraph & Telephone Verfahren und vorrichtung zur reduktion von störwellen eines kommunikationssystems
US5446771A (en) 1994-01-24 1995-08-29 Motorola, Inc. Adaptive coherent signal detection method and apparatus
US6608868B1 (en) * 1999-01-19 2003-08-19 Matsushita Electric Industrial Co., Ltd. Apparatus and method for digital wireless communications
JP3522651B2 (ja) 2000-05-19 2004-04-26 松下電器産業株式会社 通信端末装置及び復調方法
US6430214B1 (en) * 2000-05-22 2002-08-06 Motorola, Inc. Fading resistant multi-level QAM receiver
US6647055B2 (en) 2000-08-31 2003-11-11 Wen-Yi Kuo Adaptive channel estimation using continuous pilot signal based on doppler period

Also Published As

Publication number Publication date
US20040264590A1 (en) 2004-12-30
CN1833416A (zh) 2006-09-13
ATE386392T1 (de) 2008-03-15
US7289551B2 (en) 2007-10-30
DE602004011777T2 (de) 2009-02-05
EP1647117B1 (de) 2008-02-13
EP1647117A1 (de) 2006-04-19
WO2005004423A1 (en) 2005-01-13

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee