FI112010B - Menetelmä ja laite koherentin viestinnän suorittamiseksi hajaspektriviestintäjärjestelmässä - Google Patents
Menetelmä ja laite koherentin viestinnän suorittamiseksi hajaspektriviestintäjärjestelmässä Download PDFInfo
- Publication number
- FI112010B FI112010B FI945336A FI945336A FI112010B FI 112010 B FI112010 B FI 112010B FI 945336 A FI945336 A FI 945336A FI 945336 A FI945336 A FI 945336A FI 112010 B FI112010 B FI 112010B
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- FI
- Finland
- Prior art keywords
- channel
- data
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- 238000004891 communication Methods 0.000 title claims description 96
- 238000000034 method Methods 0.000 title claims description 54
- 230000001427 coherent effect Effects 0.000 title description 45
- 238000001228 spectrum Methods 0.000 title description 27
- 230000007480 spreading Effects 0.000 claims description 42
- 230000004044 response Effects 0.000 claims description 22
- 230000005540 biological transmission Effects 0.000 claims description 14
- 238000001914 filtration Methods 0.000 claims description 11
- 239000000523 sample Substances 0.000 claims description 11
- 239000013074 reference sample Substances 0.000 claims description 9
- 238000012545 processing Methods 0.000 claims description 5
- 238000007476 Maximum Likelihood Methods 0.000 claims description 4
- 238000003780 insertion Methods 0.000 claims 1
- 230000037431 insertion Effects 0.000 claims 1
- 238000012886 linear function Methods 0.000 claims 1
- 238000004513 sizing Methods 0.000 claims 1
- 239000011159 matrix material Substances 0.000 description 15
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- 230000000875 corresponding effect Effects 0.000 description 6
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- 230000011664 signaling Effects 0.000 description 5
- 230000001413 cellular effect Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
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- 238000005070 sampling Methods 0.000 description 3
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- 230000006872 improvement Effects 0.000 description 2
- 238000010295 mobile communication Methods 0.000 description 2
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- 241000287828 Gallus gallus Species 0.000 description 1
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Classifications
-
- 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
- H04B7/0845—Weighted combining per branch equalization, e.g. by an FIR-filter or RAKE receiver per antenna branch
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/005—Control of transmission; Equalising
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
-
- 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
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K1/00—Secret communication
-
- 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
- H04L25/0202—Channel estimation
- H04L25/0224—Channel estimation using sounding signals
- H04L25/0228—Channel estimation using sounding signals with direct estimation from sounding signals
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Probability & Statistics with Applications (AREA)
- Theoretical Computer Science (AREA)
- Mobile Radio Communication Systems (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Error Detection And Correction (AREA)
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US3125893 | 1993-03-11 | ||
| US08/031,258 US5329547A (en) | 1993-03-11 | 1993-03-11 | Method and apparatus for coherent communication in a spread-spectrum communication system |
| PCT/US1994/001746 WO1994021065A1 (fr) | 1993-03-11 | 1994-02-16 | Procede et appareil assurant des telecommunications coherentes dans le cadre d'un reseau a spectre disperse |
| US9401746 | 1994-02-16 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| FI945336A0 FI945336A0 (fi) | 1994-11-11 |
| FI945336A FI945336A (fi) | 1994-11-11 |
| FI112010B true FI112010B (fi) | 2003-10-15 |
Family
ID=21858459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FI945336A FI112010B (fi) | 1993-03-11 | 1994-11-11 | Menetelmä ja laite koherentin viestinnän suorittamiseksi hajaspektriviestintäjärjestelmässä |
Country Status (14)
| Country | Link |
|---|---|
| US (1) | US5329547A (fr) |
| EP (1) | EP0643889B1 (fr) |
| JP (1) | JP3464002B2 (fr) |
| CN (1) | CN1048606C (fr) |
| BR (1) | BR9404420A (fr) |
| CA (1) | CA2134230C (fr) |
| DE (1) | DE69430720T2 (fr) |
| FI (1) | FI112010B (fr) |
| MY (1) | MY125586A (fr) |
| PL (1) | PL174713B1 (fr) |
| SE (1) | SE520542C2 (fr) |
| SG (1) | SG46295A1 (fr) |
| TW (1) | TW295754B (fr) |
| WO (1) | WO1994021065A1 (fr) |
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| US5446757A (en) * | 1993-06-14 | 1995-08-29 | Chang; Chen-Yi | Code-division-multiple-access-system based on M-ary pulse-position modulated direct-sequence |
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| FR2653286A1 (fr) * | 1989-10-12 | 1991-04-19 | Europ Agence Spatiale | Procede et circuit d'acquisition de code pour recepteur de signal a spectre etale. |
| US5101501A (en) * | 1989-11-07 | 1992-03-31 | Qualcomm Incorporated | Method and system for providing a soft handoff in communications in a cdma cellular telephone system |
| US5056109A (en) * | 1989-11-07 | 1991-10-08 | Qualcomm, Inc. | Method and apparatus for controlling transmission power in a cdma cellular mobile telephone system |
| US5109390A (en) * | 1989-11-07 | 1992-04-28 | Qualcomm Incorporated | Diversity receiver in a cdma cellular telephone system |
| US5029184A (en) * | 1990-01-24 | 1991-07-02 | Harris Corporation | Low probability of intercept communication system |
| US5103459B1 (en) * | 1990-06-25 | 1999-07-06 | Qualcomm Inc | System and method for generating signal waveforms in a cdma cellular telephone system |
| DE59104600D1 (de) * | 1990-11-22 | 1995-03-23 | Ascom Tech Ag | Empfänger für ein DSSS-Signal. |
| US5107225A (en) * | 1990-11-30 | 1992-04-21 | Qualcomm Incorporated | High dynamic range closed loop automatic gain control circuit |
-
1993
- 1993-03-11 US US08/031,258 patent/US5329547A/en not_active Expired - Lifetime
-
1994
- 1994-02-16 WO PCT/US1994/001746 patent/WO1994021065A1/fr active IP Right Grant
- 1994-02-16 CA CA002134230A patent/CA2134230C/fr not_active Expired - Lifetime
- 1994-02-16 JP JP52000694A patent/JP3464002B2/ja not_active Expired - Lifetime
- 1994-02-16 BR BR9404420A patent/BR9404420A/pt not_active Application Discontinuation
- 1994-02-16 EP EP94913263A patent/EP0643889B1/fr not_active Expired - Lifetime
- 1994-02-16 SG SG1996002270A patent/SG46295A1/en unknown
- 1994-02-16 CN CN94190121A patent/CN1048606C/zh not_active Expired - Lifetime
- 1994-02-16 DE DE69430720T patent/DE69430720T2/de not_active Expired - Lifetime
- 1994-02-16 PL PL94306002A patent/PL174713B1/pl unknown
- 1994-02-25 MY MYPI94000441A patent/MY125586A/en unknown
- 1994-03-17 TW TW083102338A patent/TW295754B/zh active
- 1994-11-10 SE SE9403860A patent/SE520542C2/sv not_active IP Right Cessation
- 1994-11-11 FI FI945336A patent/FI112010B/fi not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| CN1048606C (zh) | 2000-01-19 |
| FI945336A0 (fi) | 1994-11-11 |
| JP3464002B2 (ja) | 2003-11-05 |
| PL174713B1 (pl) | 1998-09-30 |
| BR9404420A (pt) | 1999-06-15 |
| US5329547A (en) | 1994-07-12 |
| EP0643889A1 (fr) | 1995-03-22 |
| CN1105510A (zh) | 1995-07-19 |
| CA2134230C (fr) | 1999-09-21 |
| TW295754B (fr) | 1997-01-11 |
| SE520542C2 (sv) | 2003-07-22 |
| MY125586A (en) | 2006-08-30 |
| SG46295A1 (en) | 1998-02-20 |
| EP0643889A4 (fr) | 1997-12-10 |
| DE69430720D1 (de) | 2002-07-11 |
| WO1994021065A1 (fr) | 1994-09-15 |
| SE9403860D0 (sv) | 1994-11-10 |
| EP0643889B1 (fr) | 2002-06-05 |
| JPH07506713A (ja) | 1995-07-20 |
| CA2134230A1 (fr) | 1994-09-15 |
| SE9403860L (sv) | 1994-12-27 |
| PL306002A1 (en) | 1995-02-20 |
| FI945336A (fi) | 1994-11-11 |
| DE69430720T2 (de) | 2002-12-05 |
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Legal Events
| Date | Code | Title | Description |
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| PC | Transfer of assignment of patent |
Owner name: MOTOROLA MOBILITY, INC. Free format text: MOTOROLA MOBILITY, INC. |
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| MA | Patent expired |