WO2000054418A1 - Unsupervised adaptive chip separation filter for cdma terminal - Google Patents
Unsupervised adaptive chip separation filter for cdma terminal Download PDFInfo
- Publication number
- WO2000054418A1 WO2000054418A1 PCT/FI2000/000192 FI0000192W WO0054418A1 WO 2000054418 A1 WO2000054418 A1 WO 2000054418A1 FI 0000192 W FI0000192 W FI 0000192W WO 0054418 A1 WO0054418 A1 WO 0054418A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- receiver
- channel
- cdma
- chip
- adaptive
- Prior art date
Links
Classifications
-
- 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
- H04B1/7097—Interference-related aspects
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
- H04B7/0837—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining
- H04B7/0842—Weighted combining
- H04B7/0848—Joint weighting
- H04B7/0857—Joint weighting using maximum ratio combining techniques, e.g. signal-to- interference ratio [SIR], received signal strenght indication [RSS]
-
- 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
- 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
- H04B1/7097—Interference-related aspects
- H04B1/7103—Interference-related aspects the interference being multiple access interference
-
- 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
- H04B1/7097—Interference-related aspects
- H04B1/711—Interference-related aspects the interference being multi-path interference
- H04B1/7115—Constructive combining of multi-path signals, i.e. RAKE receivers
-
- 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
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L2025/0335—Arrangements for removing intersymbol interference characterised by the type of transmission
- H04L2025/03375—Passband transmission
- H04L2025/03401—PSK
-
- 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
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L2025/03433—Arrangements for removing intersymbol interference characterised by equaliser structure
- H04L2025/03439—Fixed structures
- H04L2025/03445—Time domain
- H04L2025/03471—Tapped delay lines
- H04L2025/03477—Tapped delay lines not time-recursive
-
- 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
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L2025/03592—Adaptation methods
- H04L2025/03598—Algorithms
- H04L2025/03611—Iterative algorithms
- H04L2025/03617—Time recursive algorithms
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00912679A EP1157474A1 (en) | 1999-03-10 | 2000-03-10 | Unsupervised adaptive chip separation filter for cdma terminal |
AU34342/00A AU3434200A (en) | 1999-03-10 | 2000-03-10 | Unsupervised adaptive chip separation filter for cdma terminal |
JP2000604534A JP2002539666A (en) | 1999-03-10 | 2000-03-10 | Unsupervised adaptive chip separation filter for CDMA terminals |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12360399P | 1999-03-10 | 1999-03-10 | |
US60/123,603 | 1999-03-10 | ||
US51803100A | 2000-03-03 | 2000-03-03 | |
US09/518,031 | 2000-03-03 | ||
US09/521,439 US6721293B1 (en) | 1999-03-10 | 2000-03-07 | Unsupervised adaptive chip separation filter for CDMA terminal |
US09/521,439 | 2000-03-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000054418A1 true WO2000054418A1 (en) | 2000-09-14 |
Family
ID=27382978
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FI2000/000192 WO2000054418A1 (en) | 1999-03-10 | 2000-03-10 | Unsupervised adaptive chip separation filter for cdma terminal |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1157474A1 (en) |
JP (1) | JP2002539666A (en) |
CN (1) | CN1348632A (en) |
AU (1) | AU3434200A (en) |
WO (1) | WO2000054418A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2351879B (en) * | 1999-04-21 | 2003-10-08 | Infineon Technologies Corp | Cellular telecommunications systems |
WO2004075432A1 (en) * | 2003-02-18 | 2004-09-02 | Qualcomm Incorporated | Communication receiver with a rake-based adaptive equalizer |
US7099374B2 (en) | 2001-03-14 | 2006-08-29 | Mercury Computer Systems, Inc. | Wireless communication systems and methods for long-code communications for regenerative multiple user detection involving matched-filter outputs |
JP2008182721A (en) * | 2001-03-12 | 2008-08-07 | Skyworks Solutions Inc | Method and apparatus for spread spectrum radio signal recovery in wideband spread spectrum communication system |
US8135351B2 (en) | 2003-02-18 | 2012-03-13 | Qualcomm Incorporated | Systems and methods for improving channel estimation |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7362830B2 (en) * | 2002-12-31 | 2008-04-22 | Lg Electronics Inc. | Smart antenna system and method |
US7116271B2 (en) * | 2004-09-23 | 2006-10-03 | Interdigital Technology Corporation | Blind signal separation using spreading codes |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0631399A1 (en) * | 1993-06-25 | 1994-12-28 | Nec Corporation | Method and apparatus for interference cancellation and adaptive equalisation in diversity reception |
US5577025A (en) * | 1995-06-30 | 1996-11-19 | Qualcomm Incorporated | Signal acquisition in a multi-user communication system using multiple walsh channels |
-
2000
- 2000-03-10 CN CN 00804820 patent/CN1348632A/en active Pending
- 2000-03-10 AU AU34342/00A patent/AU3434200A/en not_active Abandoned
- 2000-03-10 EP EP00912679A patent/EP1157474A1/en not_active Withdrawn
- 2000-03-10 WO PCT/FI2000/000192 patent/WO2000054418A1/en not_active Application Discontinuation
- 2000-03-10 JP JP2000604534A patent/JP2002539666A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0631399A1 (en) * | 1993-06-25 | 1994-12-28 | Nec Corporation | Method and apparatus for interference cancellation and adaptive equalisation in diversity reception |
US5577025A (en) * | 1995-06-30 | 1996-11-19 | Qualcomm Incorporated | Signal acquisition in a multi-user communication system using multiple walsh channels |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2351879B (en) * | 1999-04-21 | 2003-10-08 | Infineon Technologies Corp | Cellular telecommunications systems |
JP2008182721A (en) * | 2001-03-12 | 2008-08-07 | Skyworks Solutions Inc | Method and apparatus for spread spectrum radio signal recovery in wideband spread spectrum communication system |
US7099374B2 (en) | 2001-03-14 | 2006-08-29 | Mercury Computer Systems, Inc. | Wireless communication systems and methods for long-code communications for regenerative multiple user detection involving matched-filter outputs |
US7110431B2 (en) | 2001-03-14 | 2006-09-19 | Mercury Computer Systems, Inc. | Hardware and software for performing computations in a short-code spread-spectrum communications system |
WO2004075432A1 (en) * | 2003-02-18 | 2004-09-02 | Qualcomm Incorporated | Communication receiver with a rake-based adaptive equalizer |
AU2004213985B2 (en) * | 2003-02-18 | 2010-01-28 | Qualcomm Incorporated | Communication receiver with a rake-based adaptive equalizer |
AU2004213985C1 (en) * | 2003-02-18 | 2010-08-19 | Qualcomm Incorporated | Communication receiver with a rake-based adaptive equalizer |
US8135351B2 (en) | 2003-02-18 | 2012-03-13 | Qualcomm Incorporated | Systems and methods for improving channel estimation |
US8615200B2 (en) | 2003-02-18 | 2013-12-24 | Qualcomm Incorporated | Systems and methods for improving channel estimation |
Also Published As
Publication number | Publication date |
---|---|
JP2002539666A (en) | 2002-11-19 |
EP1157474A1 (en) | 2001-11-28 |
AU3434200A (en) | 2000-09-28 |
CN1348632A (en) | 2002-05-08 |
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