TWI239153B - Method and apparatus for overlying two CDMA systems on the same frequency bandwidth - Google Patents
Method and apparatus for overlying two CDMA systems on the same frequency bandwidth Download PDFInfo
- Publication number
- TWI239153B TWI239153B TW089118724A TW89118724A TWI239153B TW I239153 B TWI239153 B TW I239153B TW 089118724 A TW089118724 A TW 089118724A TW 89118724 A TW89118724 A TW 89118724A TW I239153 B TWI239153 B TW I239153B
- Authority
- TW
- Taiwan
- Prior art keywords
- signal
- cdma channel
- cdma
- information signals
- signals
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 50
- 238000001514 detection method Methods 0.000 claims abstract description 4
- 230000005540 biological transmission Effects 0.000 claims description 23
- 238000001228 spectrum Methods 0.000 claims description 20
- 238000005259 measurement Methods 0.000 claims description 12
- 230000004044 response Effects 0.000 claims description 5
- 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
- 206010010071 Coma Diseases 0.000 claims 1
- 101100439060 Talaromyces verruculosus cdmA gene Proteins 0.000 claims 1
- 239000002023 wood Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 10
- 238000004891 communication Methods 0.000 description 9
- 230000002079 cooperative effect Effects 0.000 description 6
- 230000000875 corresponding effect Effects 0.000 description 4
- 230000001413 cellular effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000003595 spectral effect Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 241001657948 Midea Species 0.000 description 1
- 210000004271 bone marrow stromal cell Anatomy 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 235000012054 meals Nutrition 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 235000019640 taste Nutrition 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
- H04B1/7073—Synchronisation aspects
- H04B1/7075—Synchronisation aspects with code phase acquisition
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
- H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
- H04B7/2662—Arrangements for Wireless System Synchronisation
- H04B7/2671—Arrangements for Wireless Time-Division Multiple Access [TDMA] System Synchronisation
- H04B7/2678—Time synchronisation
- H04B7/2687—Inter base stations synchronisation
- H04B7/2696—Over the air autonomous synchronisation, e.g. by monitoring network activity
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
- H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
- H04B7/2662—Arrangements for Wireless System Synchronisation
- H04B7/2668—Arrangements for Wireless Code-Division Multiple Access [CDMA] System Synchronisation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J13/00—Code division multiplex systems
- H04J13/0007—Code type
- H04J13/004—Orthogonal
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/395,300 US6882631B1 (en) | 1999-09-13 | 1999-09-13 | Method and apparatus for overlaying two CDMA systems on the same frequency bandwidth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| TWI239153B true TWI239153B (en) | 2005-09-01 |
Family
ID=23562471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW089118724A TWI239153B (en) | 1999-09-13 | 2000-11-28 | Method and apparatus for overlying two CDMA systems on the same frequency bandwidth |
Country Status (10)
| Country | Link |
|---|---|
| US (3) | US6882631B1 (enExample) |
| EP (1) | EP1212851A1 (enExample) |
| JP (2) | JP2003509952A (enExample) |
| KR (1) | KR100760479B1 (enExample) |
| CN (1) | CN1168232C (enExample) |
| AU (1) | AU7372400A (enExample) |
| BR (1) | BR0013934A (enExample) |
| HK (1) | HK1047659B (enExample) |
| TW (1) | TWI239153B (enExample) |
| WO (1) | WO2001020817A1 (enExample) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8325856B2 (en) | 2007-03-05 | 2012-12-04 | Qualcomm Incorporated | Coherent initial acquisition |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7061398B2 (en) * | 1999-08-16 | 2006-06-13 | Bs&B Safety Systems Limited | Two-way wide area telemetry |
| US6882631B1 (en) * | 1999-09-13 | 2005-04-19 | Qualcomm Incorporated | Method and apparatus for overlaying two CDMA systems on the same frequency bandwidth |
| US6314126B1 (en) * | 2001-01-12 | 2001-11-06 | Linex Technologies, Inc. | Spread-spectrum handoff and source congestion avoidance system and method |
| US8605686B2 (en) * | 2001-02-12 | 2013-12-10 | Qualcomm Incorporated | Method and apparatus for power control in a wireless communication system |
| US20040137416A1 (en) * | 2002-04-05 | 2004-07-15 | Yue Ma | System and method using adaptive learning components to enhance target advertising and customize system behavior |
| US8194703B2 (en) | 2002-08-07 | 2012-06-05 | Kyocera Corporation | Wireless communication system |
| US8364185B2 (en) * | 2005-04-18 | 2013-01-29 | Samsung Electronics Co., Ltd. | Method and system for synchronizing a clock for an adjacent network to a clock for an overlay network |
| KR100830163B1 (ko) * | 2005-04-20 | 2008-05-20 | 삼성전자주식회사 | 주파수 오버레이 통신 시스템에서 신호 송수신 장치 및 방법 |
| US7933561B2 (en) * | 2006-12-11 | 2011-04-26 | Apple Inc. | Wireless communications circuitry with simultaneous receive capabilities for handheld electronic devices |
| JP4606405B2 (ja) * | 2006-12-18 | 2011-01-05 | 京セラ株式会社 | 無線通信システムの制御方法、基地局の制御方法、無線通信端末の制御方法 |
| US7818029B2 (en) * | 2007-04-11 | 2010-10-19 | Apple Inc. | Wireless communications circuitry with antenna sharing capabilities for handheld electronic devices |
| FI20085423A0 (fi) * | 2008-05-08 | 2008-05-08 | Nokia Siemens Networks Oy | Synkronointi matkaviestinjärjestelmässä |
| WO2010087665A2 (en) * | 2009-02-02 | 2010-08-05 | Lg Electronics Inc. | Method and apparatus for transmitting data performed by at least one base sation in wireless communication system |
| US8219157B2 (en) * | 2009-03-26 | 2012-07-10 | Apple Inc. | Electronic device with shared multiband antenna and antenna diversity circuitry |
| US8208867B2 (en) * | 2009-04-09 | 2012-06-26 | Apple Inc. | Shared multiband antennas and antenna diversity circuitry for electronic devices |
| CN107615682B (zh) * | 2015-06-25 | 2020-02-14 | 华为技术有限公司 | 一种相位同步的方法及装置 |
Family Cites Families (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5224120A (en) | 1990-12-05 | 1993-06-29 | Interdigital Technology Corporation | Dynamic capacity allocation CDMA spread spectrum communications |
| GB2267627B (en) | 1992-05-27 | 1996-01-03 | Roke Manor Research | Improvements in or relating to radio communication systems |
| WO1994030024A1 (en) | 1993-06-14 | 1994-12-22 | Telefonaktiebolaget Lm Ericsson | Time alignment of transmission in a down-link of a cdma system |
| US5446727A (en) * | 1993-11-30 | 1995-08-29 | Motorola Inc. | Method and apparatus for time aligning signals for reception in a code-division multiple access communication system |
| JPH0823568A (ja) | 1994-07-08 | 1996-01-23 | Nec Corp | 無線フレーム同期方式 |
| US5577031A (en) * | 1995-03-22 | 1996-11-19 | Smith; Jeffrey W. | Wideband channelizer incorporating diversity switch |
| WO1997008847A1 (en) * | 1995-08-31 | 1997-03-06 | Nokia Telecommunications Oy | Method and device for controlling transmission power of a radio transmitter in a cellular communication system |
| JP2785789B2 (ja) * | 1996-02-09 | 1998-08-13 | 日本電気株式会社 | ディジタル移動通信システム |
| FI961362A7 (fi) * | 1996-03-25 | 1997-09-26 | Nokia Telecommunications Oy | Häiriöiden vähentämismenetelmä ja radiojärjestelmä |
| JPH1013918A (ja) * | 1996-06-19 | 1998-01-16 | Toshiba Corp | 符号分割多元接続方式を採用した移動通信システムとその無線通信装置 |
| FI964707A7 (fi) * | 1996-11-26 | 1998-05-27 | Nokia Telecommunications Oy | Menetelmä kuormituksen kontrolloimiseksi ja radiojärjestelmä |
| US5907577A (en) * | 1997-02-06 | 1999-05-25 | At&T Wireless Services | Delay compensation |
| US6539050B1 (en) * | 1997-06-26 | 2003-03-25 | Hughes Electronics Corporation | Method for transmitting wideband signals via a communication system adapted for narrow-band signal transmission |
| US6510147B1 (en) * | 1997-07-15 | 2003-01-21 | Hughes Electronics Corporation | Method and apparatus for orthogonally overlaying variable chip rate spread spectrum signals |
| US6285669B1 (en) * | 1997-07-17 | 2001-09-04 | Nortel Networks Limited | CDMA direct spread overlay system and method of operation |
| US6307840B1 (en) * | 1997-09-19 | 2001-10-23 | Qualcomm Incorporated | Mobile station assisted timing synchronization in CDMA communication system |
| US5960347A (en) * | 1997-10-09 | 1999-09-28 | Interdigital Technology Corporation | Seamless handoff system and method |
| BR9813026A (pt) * | 1997-10-10 | 2000-08-15 | Qualcomm Inc | Espalhamento de código pn em múltiplas camadas em um sistema de comunicações de múltiplos usuários |
| US6208871B1 (en) * | 1998-02-27 | 2001-03-27 | Motorola, Inc. | Method and apparatus for providing a time adjustment to a wireless communication system |
| US6490314B1 (en) * | 1998-09-23 | 2002-12-03 | Ericsson Inc. | Method for overlay of narrowband and wideband communication systems |
| US6747956B1 (en) * | 1999-07-30 | 2004-06-08 | Lucent Technologies Inc. | Method for measurement of receive antenna return loss in a CDMA radio system |
| US6882631B1 (en) * | 1999-09-13 | 2005-04-19 | Qualcomm Incorporated | Method and apparatus for overlaying two CDMA systems on the same frequency bandwidth |
-
1999
- 1999-09-13 US US09/395,300 patent/US6882631B1/en not_active Expired - Fee Related
-
2000
- 2000-09-12 HK HK02109102.4A patent/HK1047659B/zh not_active IP Right Cessation
- 2000-09-12 WO PCT/US2000/024956 patent/WO2001020817A1/en not_active Ceased
- 2000-09-12 BR BR0013934-3A patent/BR0013934A/pt not_active IP Right Cessation
- 2000-09-12 AU AU73724/00A patent/AU7372400A/en not_active Abandoned
- 2000-09-12 CN CNB008127638A patent/CN1168232C/zh not_active Expired - Fee Related
- 2000-09-12 KR KR1020027003323A patent/KR100760479B1/ko not_active Expired - Fee Related
- 2000-09-12 JP JP2001524274A patent/JP2003509952A/ja active Pending
- 2000-09-12 EP EP00961826A patent/EP1212851A1/en not_active Withdrawn
- 2000-11-28 TW TW089118724A patent/TWI239153B/zh active
-
2005
- 2005-01-19 US US11/039,259 patent/US7212508B2/en not_active Expired - Lifetime
-
2007
- 2007-03-01 US US11/681,089 patent/US7397780B2/en not_active Expired - Fee Related
-
2010
- 2010-09-21 JP JP2010211211A patent/JP2011082972A/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8325856B2 (en) | 2007-03-05 | 2012-12-04 | Qualcomm Incorporated | Coherent initial acquisition |
Also Published As
| Publication number | Publication date |
|---|---|
| US7397780B2 (en) | 2008-07-08 |
| AU7372400A (en) | 2001-04-17 |
| US7212508B2 (en) | 2007-05-01 |
| KR20020030819A (ko) | 2002-04-25 |
| HK1047659B (zh) | 2005-05-13 |
| US20050122917A1 (en) | 2005-06-09 |
| US20070147293A1 (en) | 2007-06-28 |
| EP1212851A1 (en) | 2002-06-12 |
| US6882631B1 (en) | 2005-04-19 |
| KR100760479B1 (ko) | 2007-09-20 |
| JP2003509952A (ja) | 2003-03-11 |
| JP2011082972A (ja) | 2011-04-21 |
| WO2001020817A1 (en) | 2001-03-22 |
| CN1168232C (zh) | 2004-09-22 |
| CN1373947A (zh) | 2002-10-09 |
| HK1047659A1 (en) | 2003-02-28 |
| BR0013934A (pt) | 2002-07-02 |
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