DE69736444T2 - Effiziente Mehrkanalfilterung für CDMA-Modems - Google Patents

Effiziente Mehrkanalfilterung für CDMA-Modems Download PDF

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Publication number
DE69736444T2
DE69736444T2 DE69736444T DE69736444T DE69736444T2 DE 69736444 T2 DE69736444 T2 DE 69736444T2 DE 69736444 T DE69736444 T DE 69736444T DE 69736444 T DE69736444 T DE 69736444T DE 69736444 T2 DE69736444 T2 DE 69736444T2
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DE
Germany
Prior art keywords
lut
memory
filter
coupled
inputs
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 - Lifetime
Application number
DE69736444T
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German (de)
English (en)
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DE69736444D1 (de
Inventor
Robert T. Regis
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InterDigital Technology Corp
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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 DE69736444D1 publication Critical patent/DE69736444D1/de
Application granted granted Critical
Publication of DE69736444T2 publication Critical patent/DE69736444T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
DE69736444T 1996-06-27 1997-06-24 Effiziente Mehrkanalfilterung für CDMA-Modems Expired - Lifetime DE69736444T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US670160 1996-06-27
US08/670,160 US6487190B1 (en) 1996-06-27 1996-06-27 Efficient multichannel filtering for CDMA modems

Publications (2)

Publication Number Publication Date
DE69736444D1 DE69736444D1 (de) 2006-09-14
DE69736444T2 true DE69736444T2 (de) 2007-08-02

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
DE69736444T Expired - Lifetime DE69736444T2 (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

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE0908008T Pending DE908008T1 (de) 1996-06-27 1997-06-24 Effiziente mehrkanalfilterung für cdma-modems

Family Applications After (1)

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

Country Status (13)

Country Link
US (3) US6487190B1 (US06487190-20021126-M00004.png)
EP (3) EP1739832A3 (US06487190-20021126-M00004.png)
JP (1) JP3550598B2 (US06487190-20021126-M00004.png)
KR (1) KR100383266B1 (US06487190-20021126-M00004.png)
CN (1) CN1117431C (US06487190-20021126-M00004.png)
AT (2) ATE240611T1 (US06487190-20021126-M00004.png)
AU (1) AU3499697A (US06487190-20021126-M00004.png)
CA (2) CA2259261C (US06487190-20021126-M00004.png)
DE (3) DE908008T1 (US06487190-20021126-M00004.png)
DK (1) DK0908008T3 (US06487190-20021126-M00004.png)
ES (2) ES2268207T3 (US06487190-20021126-M00004.png)
HK (2) HK1017175A1 (US06487190-20021126-M00004.png)
WO (1) WO1997050173A1 (US06487190-20021126-M00004.png)

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US7185036B1 (en) * 2002-05-03 2007-02-27 Atheros Communications, Inc. Look up table based upsampling and digital filtering
US8761321B2 (en) 2005-04-07 2014-06-24 Iii Holdings 1, Llc Optimal feedback weighting for soft-decision cancellers
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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
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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
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US7711075B2 (en) 2005-11-15 2010-05-04 Tensorcomm Incorporated Iterative interference cancellation using mixed feedback weights and stabilizing step sizes
US7702048B2 (en) * 2005-11-15 2010-04-20 Tensorcomm, Incorporated Iterative interference cancellation using mixed feedback weights and stabilizing step sizes
US20070112901A1 (en) * 2005-11-15 2007-05-17 Afshin Niktash Configurable digital filter
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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
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Also Published As

Publication number Publication date
CN1223754A (zh) 1999-07-21
WO1997050173A1 (en) 1997-12-31
ES2137908T1 (es) 2000-01-01
CA2259261C (en) 2003-10-21
KR20000022282A (ko) 2000-04-25
CA2434522A1 (en) 1997-12-31
ATE240611T1 (de) 2003-05-15
DE69721991T2 (de) 2004-05-19
JP3550598B2 (ja) 2004-08-04
US20050223049A1 (en) 2005-10-06
US6907024B2 (en) 2005-06-14
ATE335304T1 (de) 2006-08-15
US20030099284A1 (en) 2003-05-29
DE69721991D1 (de) 2003-06-18
DE69736444D1 (de) 2006-09-14
CN1117431C (zh) 2003-08-06
EP1337040A1 (en) 2003-08-20
JPH11513213A (ja) 1999-11-09
EP0908008B1 (en) 2003-05-14
ES2137908T3 (es) 2004-02-16
US7631027B2 (en) 2009-12-08
HK1059992A1 (en) 2004-07-23
US6487190B1 (en) 2002-11-26
EP1337040B1 (en) 2006-08-02
CA2259261A1 (en) 1997-12-31
AU3499697A (en) 1998-01-14
EP1739832A2 (en) 2007-01-03
EP1739832A3 (en) 2007-12-26
DE908008T1 (de) 1999-10-21
HK1017175A1 (en) 1999-11-12
ES2268207T3 (es) 2007-03-16
KR100383266B1 (ko) 2003-08-25
EP0908008A1 (en) 1999-04-14
DK0908008T3 (da) 2003-09-15

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