NO961383L - Fremgangsmåte for å öke signalkvalitet ved å justere spredningsforholdet i et celledelt CDMA-radiosystem - Google Patents
Fremgangsmåte for å öke signalkvalitet ved å justere spredningsforholdet i et celledelt CDMA-radiosystemInfo
- Publication number
- NO961383L NO961383L NO961383A NO961383A NO961383L NO 961383 L NO961383 L NO 961383L NO 961383 A NO961383 A NO 961383A NO 961383 A NO961383 A NO 961383A NO 961383 L NO961383 L NO 961383L
- Authority
- NO
- Norway
- Prior art keywords
- connection
- spreading
- radio system
- ratio
- signal quality
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J13/00—Code division multiplex systems
- H04J13/0007—Code type
- H04J13/004—Orthogonal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J13/00—Code division multiplex systems
- H04J13/10—Code generation
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Transmitters (AREA)
- Electromechanical Clocks (AREA)
- Optical Measuring Cells (AREA)
- Time-Division Multiplex Systems (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
Oppfinnelsen angår et celledelt CDMA-radio- system son i hver celle omfatter minst en basesta- sjon (BTS) forbundet med mobilstasjonene (MSI, MS2) i cellen, i hvilket system et datasignal for hver bruker, generert med en gitt bitrate, multipliseres med en spredningskode som genereres med en bitrate som er betraktelig høyere enn datasignalets bitrate, idet forholdet mellom datasignalet og sprednings- koden utgjør forbindelsens spredningsforhold, og i hvilket system signaler som multipliseres med spredningskodene for flere brukere, sendes på samme frekvensbånd. For å forbedre kvaliteten av en forbindelse mellom en mobilstasjon og en basesta- sjon, justeres spredningsforholdet for forbindelsen mellom basestasjonen (BTS) og mobilstasjonen (MSI, MS2) under forbindelsen på grunnlag av signalkvalitet.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI934353A FI110042B (fi) | 1993-10-04 | 1993-10-04 | Solukkoradiojärjestelmä |
PCT/FI1994/000441 WO1995010145A1 (en) | 1993-10-04 | 1994-10-03 | Method of increasing signal quality by adjusting the spreading ratio in a cdma cellular radio system |
Publications (2)
Publication Number | Publication Date |
---|---|
NO961383D0 NO961383D0 (no) | 1996-04-03 |
NO961383L true NO961383L (no) | 1996-06-03 |
Family
ID=8538706
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO961383A NO961383L (no) | 1993-10-04 | 1996-04-03 | Fremgangsmåte for å öke signalkvalitet ved å justere spredningsforholdet i et celledelt CDMA-radiosystem |
Country Status (9)
Country | Link |
---|---|
EP (1) | EP0722636B1 (no) |
JP (1) | JPH09505953A (no) |
CN (1) | CN1064203C (no) |
AT (1) | ATE323347T1 (no) |
AU (1) | AU678602B2 (no) |
DE (1) | DE69434699T2 (no) |
FI (1) | FI110042B (no) |
NO (1) | NO961383L (no) |
WO (1) | WO1995010145A1 (no) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030236070A1 (en) | 2002-06-25 | 2003-12-25 | Seligsohn Sherwin I. | Sub-orbital, high altitude communications system |
FI97505C (fi) * | 1994-11-29 | 1996-12-27 | Nokia Telecommunications Oy | Tiedonsiirtomenetelmä, lähetin ja vastaanotin |
FI97583C (fi) * | 1995-02-02 | 1997-01-10 | Nokia Mobile Phones Ltd | Tiedonsiirtomenetelmä, lähetin ja vastaanotin |
US5896368A (en) * | 1995-05-01 | 1999-04-20 | Telefonaktiebolaget Lm Ericsson | Multi-code compressed mode DS-CDMA systems and methods |
US5619492A (en) * | 1995-06-16 | 1997-04-08 | Unisys Corporation | CDMA communication system in which bit rates are dynamically allocated |
US5805585A (en) * | 1996-08-22 | 1998-09-08 | At&T Corp. | Method for providing high speed packet data services for a wireless system |
US6512750B1 (en) | 1999-04-16 | 2003-01-28 | Telefonaktiebolaget Lm Ericsson (Publ) | Power setting in CDMA systems employing discontinuous transmission |
GB2351632B (en) * | 1999-06-28 | 2003-10-29 | Nokia Telecommunications Oy | Manipulating physical channels having different spreading ratios in a CDMA rad io system |
US6535523B1 (en) * | 1999-09-30 | 2003-03-18 | Qualcomm Incorporated | System and method for persistence vector based rate assignment |
US6741577B1 (en) * | 1999-11-29 | 2004-05-25 | Koninklijke Philips Electronics N.V. | Inter-frequency handover in wireless CDMA systems |
FR2806158B1 (fr) * | 2000-03-07 | 2002-05-17 | Commissariat Energie Atomique | Procede pour determiner la position ou l'orientation d'un objet a l'aide d'un champ magnetique et dispositif correspondant |
JP4086833B2 (ja) | 2004-10-27 | 2008-05-14 | 日本電波工業株式会社 | 高周波無線機の制御方法及び高周波無線機システム |
CN110047503B (zh) * | 2018-09-25 | 2021-04-16 | 上海无线通信研究中心 | 一种声波的多径效应抑制方法 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5448593A (en) * | 1984-03-06 | 1995-09-05 | Cyplex Corporation | Frequency hopping time-diversity communications systems and transceivers for local area networks |
GB8516581D0 (en) * | 1985-07-01 | 1985-08-07 | Secr Defence | Serial data highway system |
CH676179A5 (no) * | 1988-09-29 | 1990-12-14 | Ascom Zelcom Ag | |
AU642571B2 (en) * | 1991-01-21 | 1993-10-21 | Sony Corporation | Spread spectrum signal receiving apparatus |
US5274667A (en) * | 1992-10-23 | 1993-12-28 | David Olmstead | Adaptive data rate packet communications system |
US5396516A (en) * | 1993-02-22 | 1995-03-07 | Qualcomm Incorporated | Method and system for the dynamic modification of control paremeters in a transmitter power control system |
US5341396A (en) * | 1993-03-02 | 1994-08-23 | The Boeing Company | Multi-rate spread system |
US5335249A (en) * | 1993-07-29 | 1994-08-02 | Seattle Silicon Corporation | Method and apparatus for spread spectrum communications |
-
1993
- 1993-10-04 FI FI934353A patent/FI110042B/fi not_active IP Right Cessation
-
1994
- 1994-10-03 AT AT94927688T patent/ATE323347T1/de not_active IP Right Cessation
- 1994-10-03 DE DE69434699T patent/DE69434699T2/de not_active Expired - Lifetime
- 1994-10-03 WO PCT/FI1994/000441 patent/WO1995010145A1/en active IP Right Grant
- 1994-10-03 CN CN94193658A patent/CN1064203C/zh not_active Expired - Fee Related
- 1994-10-03 JP JP7510627A patent/JPH09505953A/ja active Pending
- 1994-10-03 EP EP94927688A patent/EP0722636B1/en not_active Expired - Lifetime
- 1994-10-03 AU AU77010/94A patent/AU678602B2/en not_active Ceased
-
1996
- 1996-04-03 NO NO961383A patent/NO961383L/no not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
EP0722636A1 (en) | 1996-07-24 |
DE69434699T2 (de) | 2007-04-12 |
DE69434699D1 (de) | 2006-05-24 |
FI934353A (fi) | 1995-04-05 |
CN1132581A (zh) | 1996-10-02 |
AU7701094A (en) | 1995-05-01 |
ATE323347T1 (de) | 2006-04-15 |
FI934353A0 (fi) | 1993-10-04 |
NO961383D0 (no) | 1996-04-03 |
WO1995010145A1 (en) | 1995-04-13 |
JPH09505953A (ja) | 1997-06-10 |
EP0722636B1 (en) | 2006-04-12 |
FI110042B (fi) | 2002-11-15 |
AU678602B2 (en) | 1997-06-05 |
CN1064203C (zh) | 2001-04-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FC2A | Withdrawal, rejection or dismissal of laid open patent application |