TW431075B - Spread-spectrum telephony with accelerated code acquisition - Google Patents
Spread-spectrum telephony with accelerated code acquisitionInfo
- Publication number
- TW431075B TW431075B TW088106754A TW88106754A TW431075B TW 431075 B TW431075 B TW 431075B TW 088106754 A TW088106754 A TW 088106754A TW 88106754 A TW88106754 A TW 88106754A TW 431075 B TW431075 B TW 431075B
- Authority
- TW
- Taiwan
- Prior art keywords
- code
- spread
- identification data
- code acquisition
- long
- 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
- H04B1/7073—Synchronisation aspects
- H04B1/7083—Cell search, e.g. using a three-step approach
-
- 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
- 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
- H04B1/7077—Multi-step acquisition, e.g. multi-dwell, coarse-fine or validation
-
- 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
- H04B2201/70701—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation featuring pilot assisted reception
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Radio Relay Systems (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/067,594 US6226315B1 (en) | 1998-03-09 | 1998-04-27 | Spread-spectrum telephony with accelerated code acquisition |
Publications (1)
Publication Number | Publication Date |
---|---|
TW431075B true TW431075B (en) | 2001-04-21 |
Family
ID=22077072
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW088106754A TW431075B (en) | 1998-04-27 | 1999-05-11 | Spread-spectrum telephony with accelerated code acquisition |
Country Status (6)
Country | Link |
---|---|
US (1) | US6226315B1 (zh) |
EP (1) | EP0954113B1 (zh) |
JP (1) | JP4234264B2 (zh) |
KR (2) | KR19990083511A (zh) |
DE (1) | DE69940754D1 (zh) |
TW (1) | TW431075B (zh) |
Families Citing this family (40)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5614914A (en) * | 1994-09-06 | 1997-03-25 | Interdigital Technology Corporation | Wireless telephone distribution system with time and space diversity transmission for determining receiver location |
US6754251B1 (en) * | 1998-03-09 | 2004-06-22 | Texas Instruments Incorporated | Spread-spectrum telephony with accelerated code acquisition |
JP2878265B1 (ja) * | 1998-03-16 | 1999-04-05 | 三菱電機株式会社 | 符号割当装置並びにその方法 |
US6879571B1 (en) * | 1998-05-13 | 2005-04-12 | Hitachi, Ltd. | Code division multiple access mobile communication system |
JP3260716B2 (ja) | 1998-06-05 | 2002-02-25 | 松下電器産業株式会社 | 送信装置及びそれを用いた基地局装置 |
KR100532328B1 (ko) * | 1998-08-29 | 2006-03-23 | 삼성전자주식회사 | 부호분할다중접속통신시스템의피.엔시퀀스식별장치 |
JP2000082973A (ja) * | 1998-09-04 | 2000-03-21 | Fujitsu Ltd | パスサーチ装置及び該装置を用いたcdma受信機 |
CN101136715B (zh) * | 1998-09-08 | 2013-05-29 | 西门子公司 | 用于将基站与移动站同步的方法 |
CN100347968C (zh) * | 1998-09-22 | 2007-11-07 | 西门子公司 | 接收或发射消息的方法 |
US6356605B1 (en) * | 1998-10-07 | 2002-03-12 | Texas Instruments Incorporated | Frame synchronization in space time block coded transmit antenna diversity for WCDMA |
US6556634B1 (en) * | 1999-02-10 | 2003-04-29 | Ericsson, Inc. | Maximum likelihood rake receiver for use in a code division, multiple access wireless communication system |
KR100290678B1 (ko) | 1999-04-24 | 2001-05-15 | 윤종용 | 씨디엠에이 이동통신시스템의 셀탐색 장치 및 방법 |
KR100421142B1 (ko) * | 1999-04-28 | 2004-03-04 | 삼성전자주식회사 | 이동통신시스템의 셀탐색 장치 및 방법 |
JP2001061176A (ja) * | 1999-08-20 | 2001-03-06 | Pioneer Electronic Corp | 通信装置 |
US6735188B1 (en) * | 1999-08-27 | 2004-05-11 | Tachyon, Inc. | Channel encoding and decoding method and apparatus |
US6891882B1 (en) * | 1999-08-27 | 2005-05-10 | Texas Instruments Incorporated | Receiver algorithm for the length 4 CFC |
US6643280B1 (en) * | 1999-10-27 | 2003-11-04 | Lucent Technologies Inc. | Method and apparatus for generation of CDMA long codes |
US6959030B1 (en) | 1999-11-12 | 2005-10-25 | Itt Manufacturinger Enterprises, Inc. | Method and apparatus for generating an interleaved code |
US6873664B1 (en) * | 1999-11-12 | 2005-03-29 | Itt Manufacturing Enterprises, Inc. | Method and apparatus for detecting an interleaved code |
US6704322B1 (en) * | 1999-11-17 | 2004-03-09 | National Science Council | Smart different prime code multiplexing system |
US6747969B1 (en) * | 1999-11-23 | 2004-06-08 | Olaf Hirsch | Transmission gap interference measurement |
JP3677185B2 (ja) * | 1999-11-29 | 2005-07-27 | 株式会社東芝 | 符号分割多重伝送方式と送信装置及び受信装置 |
KR100355376B1 (ko) * | 1999-12-15 | 2002-10-12 | 삼성전자 주식회사 | 비동기형 광대역 직접 시퀀스 코드분할다중접속수신신호에 대한 동기획득 장치 |
US6934275B1 (en) * | 2000-04-17 | 2005-08-23 | Motorola, Inc. | Apparatus and method for providing separate forward dedicated and shared control channels in a communications system |
EP1338114B1 (en) * | 2000-11-30 | 2009-03-11 | ArrayComm LLC | Training sequence for a radio communications system |
US7126930B2 (en) * | 2001-02-10 | 2006-10-24 | Qualcomm, Incorporated | Method and apparatus for transmitting messages in a wireless communication system |
KR100424538B1 (ko) * | 2001-05-29 | 2004-03-27 | 엘지전자 주식회사 | 이동통신시스템에서의 스크램블링 코드 생성 장치 및 방법 |
US7768953B2 (en) | 2001-10-19 | 2010-08-03 | Interdigital Technology Corporation | System for improved power savings during full DTX mode of operation in the downlink |
DE10154937C1 (de) * | 2001-11-08 | 2002-11-07 | Siemens Ag | ADSL Präqualifikationsverfahren mit Echo-Canceler-Optimierung auf maximale Trennschärfe |
DE60229378D1 (de) * | 2002-08-23 | 2008-11-27 | Chunghwa Telecom Co Ltd | Synchronisations- und Zellsuchverfahren und -Vorrichtung für ein WCDMA-System |
US20040110508A1 (en) * | 2002-09-20 | 2004-06-10 | Jacobus Haartsen | Methods and electronic devices for wireless ad-hoc network communications using receiver determined channels and transmitted reference signals |
US7124156B2 (en) * | 2003-01-10 | 2006-10-17 | Nec America, Inc. | Apparatus and method for immediate non-sequential state transition in a PN code generator |
US7269206B2 (en) * | 2003-05-13 | 2007-09-11 | Benq Corporation | Flexible correlation for cell searching in a CDMA system |
US7224718B2 (en) * | 2003-06-17 | 2007-05-29 | Benq Corporation | Slot synchronization for a CDMA system |
US7394801B2 (en) * | 2003-06-17 | 2008-07-01 | Qisda Corporation | Cell search method suitable for initial cell search and target cell search |
JP4918488B2 (ja) * | 2004-08-16 | 2012-04-18 | ゼットティーイー(ユーエスエー)インコーポレーテッド | 無線通信における高速度セル探索及び正確な同期 |
US20090136037A1 (en) * | 2005-08-19 | 2009-05-28 | Hiroki Haga | Base station device and mobile station device |
US8059695B2 (en) * | 2007-08-13 | 2011-11-15 | Raytheon Company | Spread carrier self correcting codes |
US8275065B2 (en) * | 2008-08-01 | 2012-09-25 | Xg Technology, Inc. | System and method for power saving coding in integer cycle or impulse type modulation transmissions |
US9484960B1 (en) * | 2015-01-21 | 2016-11-01 | Inphi Corporation | Reconfigurable FEC |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0888587A (ja) * | 1994-09-19 | 1996-04-02 | Sumitomo Electric Ind Ltd | スペクトラム拡散通信装置 |
WO1996020544A1 (fr) * | 1994-12-28 | 1996-07-04 | Ntt Mobile Communications Network Inc. | Dispositif et procede permettant de synchroniser initialement un code a etalement du spectre d'un systeme de transmission a acces multiple par difference de code (amdc) |
JP3483991B2 (ja) * | 1995-07-27 | 2004-01-06 | 沖電気工業株式会社 | 符号分割多重アクセス通信用拡散符号発生器、符号分割多重アクセス通信システム及び符号分割多重アクセス通信用拡散符号発生方法 |
JPH09217071A (ja) * | 1996-02-09 | 1997-08-19 | Kao Corp | 軽油添加剤及び軽油組成物 |
JP3376224B2 (ja) * | 1996-10-23 | 2003-02-10 | 株式会社エヌ・ティ・ティ・ドコモ | Ds−cdma基地局間非同期セルラ方式における初期同期方法および受信機 |
US5930366A (en) * | 1997-08-29 | 1999-07-27 | Telefonaktiebolaget L M Ericsson | Synchronization to a base station and code acquisition within a spread spectrum communication system |
US6144650A (en) | 1997-09-25 | 2000-11-07 | Matsushita Electric Industrial Co., Ltd. | Mobile communication system |
US6018667A (en) * | 1998-01-20 | 2000-01-25 | Motorola, Inc. | Method and apparatus for transmitting information regarding the synchronization status of a base station |
-
1998
- 1998-04-27 US US09/067,594 patent/US6226315B1/en not_active Expired - Lifetime
-
1999
- 1999-04-22 EP EP99201231A patent/EP0954113B1/en not_active Expired - Lifetime
- 1999-04-22 DE DE69940754T patent/DE69940754D1/de not_active Expired - Lifetime
- 1999-04-27 KR KR1019990014987A patent/KR19990083511A/ko not_active Application Discontinuation
- 1999-04-27 JP JP17006199A patent/JP4234264B2/ja not_active Expired - Lifetime
- 1999-05-11 TW TW088106754A patent/TW431075B/zh not_active IP Right Cessation
-
2008
- 2008-05-14 KR KR1020080044488A patent/KR100904567B1/ko not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
US6226315B1 (en) | 2001-05-01 |
KR19990083511A (ko) | 1999-11-25 |
DE69940754D1 (de) | 2009-06-04 |
KR20080046155A (ko) | 2008-05-26 |
JP4234264B2 (ja) | 2009-03-04 |
EP0954113A3 (en) | 2003-10-15 |
JP2000049755A (ja) | 2000-02-18 |
EP0954113A2 (en) | 1999-11-03 |
EP0954113B1 (en) | 2009-04-22 |
KR100904567B1 (ko) | 2009-06-25 |
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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 |