TW503634B - Short code detection method - Google Patents
Short code detection method Download PDFInfo
- Publication number
- TW503634B TW503634B TW089120889A TW89120889A TW503634B TW 503634 B TW503634 B TW 503634B TW 089120889 A TW089120889 A TW 089120889A TW 89120889 A TW89120889 A TW 89120889A TW 503634 B TW503634 B TW 503634B
- Authority
- TW
- Taiwan
- Prior art keywords
- short code
- likelihood ratio
- signal
- detection method
- steps
- Prior art date
Links
- 238000001514 detection method Methods 0.000 title description 86
- 238000000034 method Methods 0.000 claims abstract description 28
- 238000004891 communication Methods 0.000 claims abstract description 20
- 230000005540 biological transmission Effects 0.000 claims description 10
- 238000005070 sampling Methods 0.000 claims description 7
- 230000002079 cooperative effect Effects 0.000 claims description 6
- 230000000875 corresponding effect Effects 0.000 claims description 2
- PCTMTFRHKVHKIS-BMFZQQSSSA-N (1s,3r,4e,6e,8e,10e,12e,14e,16e,18s,19r,20r,21s,25r,27r,30r,31r,33s,35r,37s,38r)-3-[(2r,3s,4s,5s,6r)-4-amino-3,5-dihydroxy-6-methyloxan-2-yl]oxy-19,25,27,30,31,33,35,37-octahydroxy-18,20,21-trimethyl-23-oxo-22,39-dioxabicyclo[33.3.1]nonatriaconta-4,6,8,10 Chemical compound C1C=C2C[C@@H](OS(O)(=O)=O)CC[C@]2(C)[C@@H]2[C@@H]1[C@@H]1CC[C@H]([C@H](C)CCCC(C)C)[C@@]1(C)CC2.O[C@H]1[C@@H](N)[C@H](O)[C@@H](C)O[C@H]1O[C@H]1/C=C/C=C/C=C/C=C/C=C/C=C/C=C/[C@H](C)[C@@H](O)[C@@H](C)[C@H](C)OC(=O)C[C@H](O)C[C@H](O)CC[C@@H](O)[C@H](O)C[C@H](O)C[C@](O)(C[C@H](O)[C@H]2C(O)=O)O[C@H]2C1 PCTMTFRHKVHKIS-BMFZQQSSSA-N 0.000 claims 1
- 238000005315 distribution function Methods 0.000 abstract description 3
- 230000007480 spreading Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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
- H04B1/71—Interference-related aspects the interference being narrowband 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
- H04B1/7073—Synchronisation aspects
- H04B1/70735—Code identification
-
- 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
- H04B1/71—Interference-related aspects the interference being narrowband interference
- H04B1/7101—Interference-related aspects the interference being narrowband interference with estimation filters
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Noise Elimination (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/415,321 US6414951B1 (en) | 1999-10-08 | 1999-10-08 | Method for detecting short codes in CDMA systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| TW503634B true TW503634B (en) | 2002-09-21 |
Family
ID=23645234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW089120889A TW503634B (en) | 1999-10-08 | 2000-10-06 | Short code detection method |
Country Status (12)
| Country | Link |
|---|---|
| US (7) | US6414951B1 (enExample) |
| EP (2) | EP1219038B1 (enExample) |
| JP (2) | JP3948554B2 (enExample) |
| AR (1) | AR025982A1 (enExample) |
| AT (1) | ATE301347T1 (enExample) |
| AU (1) | AU7984000A (enExample) |
| DE (1) | DE60021739T2 (enExample) |
| DK (1) | DK1219038T3 (enExample) |
| ES (1) | ES2246901T3 (enExample) |
| HK (1) | HK1048399B (enExample) |
| TW (1) | TW503634B (enExample) |
| WO (1) | WO2001028122A1 (enExample) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105474551A (zh) * | 2013-06-27 | 2016-04-06 | 英特尔公司 | 直接序列扩频平台无线电干扰的基带消除 |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6414951B1 (en) * | 1999-10-08 | 2002-07-02 | Interdigital Technology Corporation | Method for detecting short codes in CDMA systems |
| US6795423B1 (en) * | 2000-02-04 | 2004-09-21 | Interdigital Technology Corporation | System for continuous wave rejection |
| FI20000273A7 (fi) * | 2000-02-09 | 2001-08-10 | Nokia Corp | Menetelmä suorittaa koodisynkronointi ja vastaanotin |
| TW561747B (en) * | 2000-11-21 | 2003-11-11 | Ibm | Costs in data networks |
| US7868874B2 (en) | 2005-11-15 | 2011-01-11 | Synaptics Incorporated | Methods and systems for detecting a position-based attribute of an object using digital codes |
| US8847899B2 (en) | 2010-09-16 | 2014-09-30 | Synaptics Incorporated | Systems and methods for signaling and interference detection in sensor devices |
| US8743080B2 (en) | 2011-06-27 | 2014-06-03 | Synaptics Incorporated | System and method for signaling in sensor devices |
| US8766949B2 (en) | 2011-12-22 | 2014-07-01 | Synaptics Incorporated | Systems and methods for determining user input using simultaneous transmission from multiple electrodes |
| US9063608B2 (en) | 2012-06-14 | 2015-06-23 | Synaptics Incorporated | Systems and methods for sensor devices having a non-commensurate number of transmitter electrodes |
| US9176633B2 (en) | 2014-03-31 | 2015-11-03 | Synaptics Incorporated | Sensor device and method for estimating noise in a capacitive sensing device |
| US10025428B2 (en) | 2015-11-19 | 2018-07-17 | Synaptics Incorporated | Method and apparatus for improving capacitive sensing detection |
| US10019122B2 (en) | 2016-03-31 | 2018-07-10 | Synaptics Incorporated | Capacitive sensing using non-integer excitation |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5103459B1 (en) | 1990-06-25 | 1999-07-06 | Qualcomm Inc | System and method for generating signal waveforms in a cdma cellular telephone system |
| CN1163009C (zh) | 1994-02-09 | 2004-08-18 | Ntt移动通信网株式会社 | 码分多址移动通信的方法和系统 |
| US5841768A (en) * | 1996-06-27 | 1998-11-24 | Interdigital Technology Corporation | Method of controlling initial power ramp-up in CDMA systems by using short codes |
| ZA965340B (en) | 1995-06-30 | 1997-01-27 | Interdigital Tech Corp | Code division multiple access (cdma) communication system |
| US5642377A (en) | 1995-07-25 | 1997-06-24 | Nokia Mobile Phones, Ltd. | Serial search acquisition system with adaptive threshold and optimal decision for spread spectrum systems |
| ATE218773T1 (de) | 1996-06-27 | 2002-06-15 | Interdigital Tech Corp | Ein verfahren und netzwerk zum kontrollieren des hochfahrens der anfangssendeleistung in einem cdma system unter verwendung kurzer kodes |
| US6263010B1 (en) * | 1997-08-04 | 2001-07-17 | Kabushiki Kaisha Toshiba | Spread spectrum communication apparatus |
| US5974079A (en) * | 1998-01-26 | 1999-10-26 | Motorola, Inc. | Method and apparatus for encoding rate determination in a communication system |
| US6205168B1 (en) * | 1998-11-12 | 2001-03-20 | Sharp Laboratories Of America, Inc. | Sequential detection system and method with adaptive bias |
| US6414951B1 (en) * | 1999-10-08 | 2002-07-02 | Interdigital Technology Corporation | Method for detecting short codes in CDMA systems |
-
1999
- 1999-10-08 US US09/415,321 patent/US6414951B1/en not_active Expired - Lifetime
-
2000
- 2000-09-21 ES ES00970464T patent/ES2246901T3/es not_active Expired - Lifetime
- 2000-09-21 AU AU79840/00A patent/AU7984000A/en not_active Abandoned
- 2000-09-21 AT AT00970464T patent/ATE301347T1/de not_active IP Right Cessation
- 2000-09-21 WO PCT/US2000/025772 patent/WO2001028122A1/en not_active Ceased
- 2000-09-21 HK HK03100009.6A patent/HK1048399B/en not_active IP Right Cessation
- 2000-09-21 DK DK00970464T patent/DK1219038T3/da active
- 2000-09-21 DE DE60021739T patent/DE60021739T2/de not_active Expired - Lifetime
- 2000-09-21 JP JP2001530228A patent/JP3948554B2/ja not_active Expired - Fee Related
- 2000-09-21 EP EP00970464A patent/EP1219038B1/en not_active Expired - Lifetime
- 2000-09-21 EP EP05016461A patent/EP1601114A3/en not_active Ceased
- 2000-10-06 AR ARP000105299A patent/AR025982A1/es active IP Right Grant
- 2000-10-06 TW TW089120889A patent/TW503634B/zh not_active IP Right Cessation
-
2002
- 2002-07-01 US US10/187,484 patent/US6741584B2/en not_active Expired - Lifetime
- 2002-07-01 US US10/188,279 patent/US6744756B2/en not_active Expired - Lifetime
- 2002-07-01 US US10/187,693 patent/US6744755B2/en not_active Expired - Lifetime
- 2002-07-01 US US10/187,687 patent/US6751208B2/en not_active Expired - Lifetime
-
2004
- 2004-06-04 US US10/860,848 patent/US7106720B2/en not_active Expired - Lifetime
-
2006
- 2006-09-12 US US11/519,540 patent/US7889664B2/en not_active Expired - Fee Related
-
2007
- 2007-02-07 JP JP2007027928A patent/JP4213189B2/ja not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105474551A (zh) * | 2013-06-27 | 2016-04-06 | 英特尔公司 | 直接序列扩频平台无线电干扰的基带消除 |
| CN105474551B (zh) * | 2013-06-27 | 2017-11-21 | 英特尔公司 | 直接序列扩频平台无线电干扰的基带消除 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1601114A2 (en) | 2005-11-30 |
| US6741584B2 (en) | 2004-05-25 |
| US6751208B2 (en) | 2004-06-15 |
| ATE301347T1 (de) | 2005-08-15 |
| US20070008874A1 (en) | 2007-01-11 |
| AR025982A1 (es) | 2002-12-26 |
| EP1601114A3 (en) | 2008-01-23 |
| US20020176395A1 (en) | 2002-11-28 |
| HK1048399B (en) | 2006-03-24 |
| US7106720B2 (en) | 2006-09-12 |
| AU7984000A (en) | 2001-04-23 |
| ES2246901T3 (es) | 2006-03-01 |
| JP4213189B2 (ja) | 2009-01-21 |
| EP1219038B1 (en) | 2005-08-03 |
| US20020163927A1 (en) | 2002-11-07 |
| DE60021739D1 (de) | 2005-09-08 |
| US6744756B2 (en) | 2004-06-01 |
| WO2001028122A1 (en) | 2001-04-19 |
| DE60021739T2 (de) | 2006-04-20 |
| JP2003511960A (ja) | 2003-03-25 |
| US20040233864A1 (en) | 2004-11-25 |
| US7889664B2 (en) | 2011-02-15 |
| US6744755B2 (en) | 2004-06-01 |
| US20020163903A1 (en) | 2002-11-07 |
| JP3948554B2 (ja) | 2007-07-25 |
| JP2007129775A (ja) | 2007-05-24 |
| US20020181433A1 (en) | 2002-12-05 |
| HK1048399A1 (en) | 2003-03-28 |
| DK1219038T3 (da) | 2005-11-21 |
| US6414951B1 (en) | 2002-07-02 |
| EP1219038A1 (en) | 2002-07-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GD4A | Issue of patent certificate for granted invention patent | ||
| MM4A | Annulment or lapse of patent due to non-payment of fees |