DE908008T1 - Effiziente mehrkanalfilterung für cdma-modems - Google Patents

Effiziente mehrkanalfilterung für cdma-modems

Info

Publication number
DE908008T1
DE908008T1 DE0908008T DE97931346T DE908008T1 DE 908008 T1 DE908008 T1 DE 908008T1 DE 0908008 T DE0908008 T DE 0908008T DE 97931346 T DE97931346 T DE 97931346T DE 908008 T1 DE908008 T1 DE 908008T1
Authority
DE
Germany
Prior art keywords
filter
channels
inputs
lut
output
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.)
Pending
Application number
DE0908008T
Other languages
English (en)
Inventor
Robert Regis
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.)
InterDigital Technology Corp
Original Assignee
InterDigital Technology Corp
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 InterDigital Technology Corp filed Critical InterDigital Technology Corp
Publication of DE908008T1 publication Critical patent/DE908008T1/de
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • 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
    • H04B1/7073—Synchronisation aspects
    • H04B1/7075—Synchronisation aspects with code phase acquisition
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/0223—Computation saving measures; Accelerating measures
    • H03H17/0225—Measures concerning the multipliers
    • H03H17/0226—Measures concerning the multipliers comprising look-up tables
    • 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
    • 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
    • H04B1/7073—Synchronisation aspects
    • H04B1/7075—Synchronisation aspects with code phase acquisition
    • H04B1/70751—Synchronisation aspects with code phase acquisition using partial detection
    • H04B1/70753—Partial phase search
    • 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
    • H04B1/7073—Synchronisation aspects
    • H04B1/7075—Synchronisation aspects with code phase acquisition
    • H04B1/70755—Setting of lock conditions, e.g. threshold
    • 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
    • H04B1/7073—Synchronisation aspects
    • H04B1/7075—Synchronisation aspects with code phase acquisition
    • H04B1/70758—Multimode search, i.e. using multiple search strategies
    • 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
    • H04B1/7073—Synchronisation aspects
    • H04B1/7075—Synchronisation aspects with code phase acquisition
    • H04B1/708—Parallel implementation
    • 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
    • H04B1/7093—Matched filter type
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/06—Non-recursive filters
    • 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
    • H04B2201/70702—Intercell-related aspects
    • 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
    • H04B2201/70707—Efficiency-related aspects
DE0908008T 1996-06-27 1997-06-24 Effiziente mehrkanalfilterung für cdma-modems Pending DE908008T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/670,160 US6487190B1 (en) 1996-06-27 1996-06-27 Efficient multichannel filtering for CDMA modems
PCT/US1997/010909 WO1997050173A1 (en) 1996-06-27 1997-06-24 Efficient multichannel filtering for cdma modems

Publications (1)

Publication Number Publication Date
DE908008T1 true DE908008T1 (de) 1999-10-21

Family

ID=24689238

Family Applications (3)

Application Number Title Priority Date Filing Date
DE0908008T Pending DE908008T1 (de) 1996-06-27 1997-06-24 Effiziente mehrkanalfilterung für cdma-modems
DE69721991T Expired - Lifetime DE69721991T2 (de) 1996-06-27 1997-06-24 Effiziente mehrkanalfilterung für cdma-modems
DE69736444T Expired - Lifetime DE69736444T2 (de) 1996-06-27 1997-06-24 Effiziente Mehrkanalfilterung für CDMA-Modems

Family Applications After (2)

Application Number Title Priority Date Filing Date
DE69721991T Expired - Lifetime DE69721991T2 (de) 1996-06-27 1997-06-24 Effiziente mehrkanalfilterung für cdma-modems
DE69736444T Expired - Lifetime DE69736444T2 (de) 1996-06-27 1997-06-24 Effiziente Mehrkanalfilterung für CDMA-Modems

Country Status (13)

Country Link
US (3) US6487190B1 (de)
EP (3) EP1337040B1 (de)
JP (1) JP3550598B2 (de)
KR (1) KR100383266B1 (de)
CN (1) CN1117431C (de)
AT (2) ATE335304T1 (de)
AU (1) AU3499697A (de)
CA (2) CA2259261C (de)
DE (3) DE908008T1 (de)
DK (1) DK0908008T3 (de)
ES (2) ES2137908T3 (de)
HK (2) HK1017175A1 (de)
WO (1) WO1997050173A1 (de)

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US7020111B2 (en) 1996-06-27 2006-03-28 Interdigital Technology Corporation System for using rapid acquisition spreading codes for spread-spectrum communications
ZA965340B (en) 1995-06-30 1997-01-27 Interdigital Tech Corp Code division multiple access (cdma) communication system
US6885652B1 (en) 1995-06-30 2005-04-26 Interdigital Technology Corporation Code division multiple access (CDMA) communication system
EP0935189B1 (de) * 1998-02-04 2005-09-07 Texas Instruments Incorporated Rekonfigurierbarer Koprozessor mit mehreren Multiplizier-Akkumulier-Einheiten
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KR100585644B1 (ko) * 1999-12-01 2006-06-02 엘지전자 주식회사 저전력 유한충격응답필터
JP3379501B2 (ja) 1999-12-28 2003-02-24 日本電気株式会社 ゲイン可変型ディジタルフィルタ
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KR100425418B1 (ko) * 2001-09-07 2004-03-30 삼성탈레스 주식회사 룩업 테이블을 이용한 블록 보간 필터 구조
US7185036B1 (en) * 2002-05-03 2007-02-27 Atheros Communications, Inc. Look up table based upsampling and digital filtering
US7876810B2 (en) * 2005-04-07 2011-01-25 Rambus Inc. Soft weighted interference cancellation for CDMA systems
US8761321B2 (en) 2005-04-07 2014-06-24 Iii Holdings 1, Llc Optimal feedback weighting for soft-decision cancellers
US7808937B2 (en) 2005-04-07 2010-10-05 Rambus, Inc. Variable interference cancellation technology for CDMA systems
US8005128B1 (en) 2003-09-23 2011-08-23 Rambus Inc. Methods for estimation and interference cancellation for signal processing
US7715508B2 (en) 2005-11-15 2010-05-11 Tensorcomm, Incorporated Iterative interference cancellation using mixed feedback weights and stabilizing step sizes
US7263541B2 (en) 2003-01-28 2007-08-28 Agere Systems Inc. Multi-dimensional hybrid and transpose form finite impulse response filters
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US7386581B2 (en) * 2003-12-31 2008-06-10 Stmicroelectronics, Inc. Performance FIR filter
US7366746B2 (en) * 2004-02-12 2008-04-29 Xerox Corporation Finite impulse response filter method and apparatus
US7987222B1 (en) * 2004-04-22 2011-07-26 Altera Corporation Method and apparatus for implementing a multiplier utilizing digital signal processor block memory extension
US7116705B2 (en) * 2004-11-08 2006-10-03 Interdigital Technology Corporation Method and apparatus for reducing the processing rate of a chip-level equalization receiver
US7991088B2 (en) * 2005-11-15 2011-08-02 Tommy Guess Iterative interference cancellation using mixed feedback weights and stabilizing step sizes
US7711075B2 (en) 2005-11-15 2010-05-04 Tensorcomm Incorporated Iterative interference cancellation using mixed feedback weights and stabilizing step sizes
US7826516B2 (en) 2005-11-15 2010-11-02 Rambus Inc. Iterative interference canceller for wireless multiple-access systems with multiple receive antennas
US7702048B2 (en) * 2005-11-15 2010-04-20 Tensorcomm, Incorporated Iterative interference cancellation using mixed feedback weights and stabilizing step sizes
US20070110135A1 (en) 2005-11-15 2007-05-17 Tommy Guess Iterative interference cancellation for MIMO-OFDM receivers
US20070112901A1 (en) * 2005-11-15 2007-05-17 Afshin Niktash Configurable digital filter
EP1983656A1 (de) 2007-04-19 2008-10-22 MediaTek Inc. Verzahnte Filtergestaltung für ein Pilotensymboldurchschnitt von Rake-Fingern in WCDMA-Systemen
US8588253B2 (en) 2008-06-26 2013-11-19 Qualcomm Incorporated Methods and apparatuses to reduce context switching during data transmission and reception in a multi-processor device
JP6219631B2 (ja) * 2013-07-29 2017-10-25 学校法人明星学苑 論理演算装置

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Also Published As

Publication number Publication date
KR100383266B1 (ko) 2003-08-25
CA2259261C (en) 2003-10-21
EP0908008A1 (de) 1999-04-14
CN1117431C (zh) 2003-08-06
ES2137908T3 (es) 2004-02-16
ES2137908T1 (es) 2000-01-01
US6907024B2 (en) 2005-06-14
CA2259261A1 (en) 1997-12-31
JP3550598B2 (ja) 2004-08-04
AU3499697A (en) 1998-01-14
KR20000022282A (ko) 2000-04-25
JPH11513213A (ja) 1999-11-09
ATE240611T1 (de) 2003-05-15
US7631027B2 (en) 2009-12-08
DE69721991D1 (de) 2003-06-18
US6487190B1 (en) 2002-11-26
CA2434522A1 (en) 1997-12-31
DE69721991T2 (de) 2004-05-19
WO1997050173A1 (en) 1997-12-31
DE69736444D1 (de) 2006-09-14
EP1739832A3 (de) 2007-12-26
EP0908008B1 (de) 2003-05-14
EP1739832A2 (de) 2007-01-03
EP1337040B1 (de) 2006-08-02
ES2268207T3 (es) 2007-03-16
US20050223049A1 (en) 2005-10-06
EP1337040A1 (de) 2003-08-20
HK1017175A1 (en) 1999-11-12
DK0908008T3 (da) 2003-09-15
HK1059992A1 (en) 2004-07-23
ATE335304T1 (de) 2006-08-15
DE69736444T2 (de) 2007-08-02
US20030099284A1 (en) 2003-05-29
CN1223754A (zh) 1999-07-21

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