ES2137908T3 - Modems de acceso multiple de division de codigo para el filtrado eficaz de canales multiples. - Google Patents

Modems de acceso multiple de division de codigo para el filtrado eficaz de canales multiples.

Info

Publication number
ES2137908T3
ES2137908T3 ES97931346T ES97931346T ES2137908T3 ES 2137908 T3 ES2137908 T3 ES 2137908T3 ES 97931346 T ES97931346 T ES 97931346T ES 97931346 T ES97931346 T ES 97931346T ES 2137908 T3 ES2137908 T3 ES 2137908T3
Authority
ES
Spain
Prior art keywords
filter
memory
channels
channel
sum
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
ES97931346T
Other languages
English (en)
Spanish (es)
Other versions
ES2137908T1 (es
Inventor
Robert T. 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 ES2137908T1 publication Critical patent/ES2137908T1/es
Application granted granted Critical
Publication of ES2137908T3 publication Critical patent/ES2137908T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime 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
ES97931346T 1996-06-27 1997-06-24 Modems de acceso multiple de division de codigo para el filtrado eficaz de canales multiples. Expired - Lifetime ES2137908T3 (es)

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
ES2137908T1 ES2137908T1 (es) 2000-01-01
ES2137908T3 true ES2137908T3 (es) 2004-02-16

Family

ID=24689238

Family Applications (2)

Application Number Title Priority Date Filing Date
ES97931346T Expired - Lifetime ES2137908T3 (es) 1996-06-27 1997-06-24 Modems de acceso multiple de division de codigo para el filtrado eficaz de canales multiples.
ES03009778T Expired - Lifetime ES2268207T3 (es) 1996-06-27 1997-06-24 Filtro eficiente de multiples canales para los moden cdma.

Family Applications After (1)

Application Number Title Priority Date Filing Date
ES03009778T Expired - Lifetime ES2268207T3 (es) 1996-06-27 1997-06-24 Filtro eficiente de multiples canales para los moden cdma.

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) DE69736444T2 (US06487190-20021126-M00004.png)
DK (1) DK0908008T3 (US06487190-20021126-M00004.png)
ES (2) ES2137908T3 (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
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US7808937B2 (en) 2005-04-07 2010-10-05 Rambus, Inc. Variable interference cancellation technology for CDMA systems
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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
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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
JP6219631B2 (ja) * 2013-07-29 2017-10-25 学校法人明星学苑 論理演算装置
US9900028B1 (en) * 2017-03-03 2018-02-20 Synaptics Incorporated Decimation filtering in systems having parallel analog-to-digital converter channels

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Also Published As

Publication number Publication date
EP1739832A3 (en) 2007-12-26
JP3550598B2 (ja) 2004-08-04
ES2268207T3 (es) 2007-03-16
DE69736444D1 (de) 2006-09-14
EP0908008A1 (en) 1999-04-14
EP1337040B1 (en) 2006-08-02
DE69721991T2 (de) 2004-05-19
HK1059992A1 (en) 2004-07-23
CN1117431C (zh) 2003-08-06
EP1739832A2 (en) 2007-01-03
EP1337040A1 (en) 2003-08-20
DE69721991D1 (de) 2003-06-18
DE908008T1 (de) 1999-10-21
US6907024B2 (en) 2005-06-14
DK0908008T3 (da) 2003-09-15
KR100383266B1 (ko) 2003-08-25
DE69736444T2 (de) 2007-08-02
US20030099284A1 (en) 2003-05-29
ATE240611T1 (de) 2003-05-15
US7631027B2 (en) 2009-12-08
JPH11513213A (ja) 1999-11-09
ATE335304T1 (de) 2006-08-15
CA2434522A1 (en) 1997-12-31
ES2137908T1 (es) 2000-01-01
KR20000022282A (ko) 2000-04-25
CA2259261A1 (en) 1997-12-31
EP0908008B1 (en) 2003-05-14
US20050223049A1 (en) 2005-10-06
WO1997050173A1 (en) 1997-12-31
AU3499697A (en) 1998-01-14
CN1223754A (zh) 1999-07-21
CA2259261C (en) 2003-10-21
US6487190B1 (en) 2002-11-26
HK1017175A1 (en) 1999-11-12

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