NO973959L - Fremgangsmåte for estimering av signal- og stöykvalitet, samt mottaker - Google Patents
Fremgangsmåte for estimering av signal- og stöykvalitet, samt mottakerInfo
- Publication number
- NO973959L NO973959L NO973959A NO973959A NO973959L NO 973959 L NO973959 L NO 973959L NO 973959 A NO973959 A NO 973959A NO 973959 A NO973959 A NO 973959A NO 973959 L NO973959 L NO 973959L
- Authority
- NO
- Norway
- Prior art keywords
- receiver
- signal
- noise
- estimate
- procedure
- 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
- H04B1/709—Correlator structure
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Radio Transmission System (AREA)
- Noise Elimination (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
- Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
- Peptides Or Proteins (AREA)
- Investigating Or Analysing Biological Materials (AREA)
Abstract
Oppfinnelsen vedrører beregning av et estimat (315) som representerer støy- og signal-kvalitet, og en mottaker i et radiosystem. I henhold til fremgangs- måten blir den høyeste verdi (313) av en korrelasjonsvektor (101-106) dannet i en korrelater (303) i mottakeren, sammenlignet enten med den nest høyeste verdi % (315), eller med middelverdien av de andre verdier. Hvis en spesiell sprednings- kode er brukt ved mottakelsen av signalet, danner sammenligningen et forhold mellom signalet og forstyrrelsen, idet forholdet spesielt kan anvendes til å kombi- nere signaler fra diversitetsgrenene (1 og 2) i en diversitetsmottaker, hvorved fremgangsmåten gjør det mulig å kombinere signalene også forut for deteksjon. Hvis mottakingen anvender en spredningskode med hvilken intet signal mottatt av mottageren er blitt utsendt, er det mulig å danne et estimat (315) av støykvaliteten ved sammenligning av korrelasjonsverdiene, idet en estimatverdi høyere enn dette betyr at mottakeren mottar et signal, og ikke bare støy.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI956359A FI100041B (fi) | 1995-12-29 | 1995-12-29 | Menetelmä signaalin ja kohinan laadun estimoimiseksi ja vastaanotin |
PCT/FI1996/000700 WO1997024816A2 (en) | 1995-12-29 | 1996-12-27 | A method for estimating signal and noise quality, and a receiver |
Publications (2)
Publication Number | Publication Date |
---|---|
NO973959D0 NO973959D0 (no) | 1997-08-28 |
NO973959L true NO973959L (no) | 1997-10-29 |
Family
ID=8544636
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO973959A NO973959L (no) | 1995-12-29 | 1997-08-28 | Fremgangsmåte for estimering av signal- og stöykvalitet, samt mottaker |
Country Status (10)
Country | Link |
---|---|
US (1) | US6137824A (no) |
EP (1) | EP0812499B1 (no) |
JP (1) | JPH11504188A (no) |
CN (1) | CN1084093C (no) |
AT (1) | ATE244471T1 (no) |
AU (1) | AU714343B2 (no) |
DE (1) | DE69628915D1 (no) |
FI (1) | FI100041B (no) |
NO (1) | NO973959L (no) |
WO (1) | WO1997024816A2 (no) |
Families Citing this family (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI956358A (fi) * | 1995-12-29 | 1997-06-30 | Nokia Telecommunications Oy | Menetelmä tiedonsiirtonopeuden tunnistamiseksi ja vastaanotin |
US6694154B1 (en) * | 1997-11-17 | 2004-02-17 | Ericsson Inc. | Method and apparatus for performing beam searching in a radio communication system |
US6175587B1 (en) | 1997-12-30 | 2001-01-16 | Motorola, Inc. | Communication device and method for interference suppression in a DS-CDMA system |
FI112739B (fi) | 1998-05-25 | 2003-12-31 | Nokia Corp | Menetelmä ja laitteisto häiritsevän signaalin havaitsemiseen radiovastaanottimessa |
US6795580B1 (en) * | 1998-09-10 | 2004-09-21 | Tektronix, Inc. | Picture quality measurement using blockiness |
JP4557331B2 (ja) * | 1999-05-20 | 2010-10-06 | キヤノン株式会社 | 情報処理装置、情報処理システム、動作制御方法、及びコンピュータ読み取り可能な記録媒体 |
US6714527B2 (en) * | 1999-09-21 | 2004-03-30 | Interdigital Techology Corporation | Multiuser detector for variable spreading factors |
CA2385082C (en) * | 1999-09-21 | 2008-04-08 | Interdigital Technology Corporation | Multiuser detector for variable spreading factors |
JP4316759B2 (ja) * | 2000-01-13 | 2009-08-19 | 株式会社日立国際電気 | パス認定方法、cdma方式無線通信端末およびcdma方式無線通信システム |
JP3805205B2 (ja) * | 2000-04-06 | 2006-08-02 | 株式会社エヌ・ティ・ティ・ドコモ | Cdmaセルラ方式における通信品質測定方法およびその装置 |
JP2002043990A (ja) * | 2000-07-21 | 2002-02-08 | Mitsubishi Electric Corp | 無線通信用受信装置 |
US7177319B2 (en) * | 2001-12-27 | 2007-02-13 | Interdigital Technology Corporation | Insertion sorter |
US6947715B2 (en) * | 2002-03-30 | 2005-09-20 | Broadcom Corporation | VOFDM receiver correlation matrix processing using factorization |
JP4118599B2 (ja) * | 2002-05-20 | 2008-07-16 | 三菱電機株式会社 | ダイバーシチ受信機および受信方法 |
US7190741B1 (en) | 2002-10-21 | 2007-03-13 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Real-time signal-to-noise ratio (SNR) estimation for BPSK and QPSK modulation using the active communications channel |
US6920193B2 (en) * | 2002-12-19 | 2005-07-19 | Texas Instruments Incorporated | Wireless receiver using noise levels for combining signals having spatial diversity |
US20070234178A1 (en) * | 2003-02-26 | 2007-10-04 | Qualcomm Incorporated | Soft information scaling for interactive decoding |
TWI244275B (en) * | 2003-03-05 | 2005-11-21 | Winbond Electronics Corp | A rake receiver employable in multipath environment and method for mitigating the multipath interference |
US7453900B2 (en) | 2003-03-05 | 2008-11-18 | Cisco Technology, Inc. | System and method for monitoring noise associated with a communication link |
US7437135B2 (en) | 2003-10-30 | 2008-10-14 | Interdigital Technology Corporation | Joint channel equalizer interference canceller advanced receiver |
US7400692B2 (en) | 2004-01-14 | 2008-07-15 | Interdigital Technology Corporation | Telescoping window based equalization |
EP1564650A1 (en) * | 2004-02-17 | 2005-08-17 | Deutsche Thomson-Brandt Gmbh | Method and apparatus for transforming a digital audio signal and for inversely transforming a transformed digital audio signal |
US7388929B2 (en) * | 2004-07-29 | 2008-06-17 | Interdigital Technology Corporation | Method and apparatus for providing service availability information in a wireless communication system |
US9402187B2 (en) | 2009-06-30 | 2016-07-26 | Nokia Technologies Oy | Apparatus, method, computer program for communication and system thereof |
CN102271008B (zh) * | 2011-07-28 | 2014-01-01 | 上海华为技术有限公司 | 信道噪声的检测方法及系统 |
WO2013131966A2 (en) * | 2012-03-06 | 2013-09-12 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Receiving stage and method for receiving |
WO2020197452A1 (en) * | 2019-03-26 | 2020-10-01 | Telefonaktiebolaget L M Ericsson (Publ) | Method and system for determining signal quality indications |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5224122A (en) * | 1992-06-29 | 1993-06-29 | Motorola, Inc. | Method and apparatus for canceling spread-spectrum noise |
US5488629A (en) * | 1993-02-17 | 1996-01-30 | Matsushita Electric Industrial Co., Ltd. | Signal processing circuit for spread spectrum communications |
FI932605A (fi) * | 1993-06-07 | 1994-12-08 | Nokia Telecommunications Oy | Tukiasemavastaanotinlaitteisto |
US5623484A (en) * | 1993-09-24 | 1997-04-22 | Nokia Telecommunications Oy | Method and apparatus for controlling signal quality in a CDMA cellular telecommunications |
US5440597A (en) * | 1993-11-23 | 1995-08-08 | Nokia Mobile Phones Ltd. | Double dwell maximum likelihood acquisition system with continuous decision making for CDMA and direct spread spectrum system |
US5768307A (en) * | 1996-09-13 | 1998-06-16 | Telefonaktiebolaget Lm Ericsson | Coherent demodulation with decision-directed channel estimation for digital communication |
-
1995
- 1995-12-29 FI FI956359A patent/FI100041B/fi active IP Right Grant
-
1996
- 1996-12-27 DE DE69628915T patent/DE69628915D1/de not_active Expired - Lifetime
- 1996-12-27 US US08/913,068 patent/US6137824A/en not_active Expired - Fee Related
- 1996-12-27 JP JP9524049A patent/JPH11504188A/ja active Pending
- 1996-12-27 AU AU11977/97A patent/AU714343B2/en not_active Ceased
- 1996-12-27 EP EP96943149A patent/EP0812499B1/en not_active Expired - Lifetime
- 1996-12-27 AT AT96943149T patent/ATE244471T1/de not_active IP Right Cessation
- 1996-12-27 WO PCT/FI1996/000700 patent/WO1997024816A2/en active IP Right Grant
- 1996-12-27 CN CN96192623A patent/CN1084093C/zh not_active Expired - Fee Related
-
1997
- 1997-08-28 NO NO973959A patent/NO973959L/no not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
CN1084093C (zh) | 2002-05-01 |
AU1197797A (en) | 1997-07-28 |
WO1997024816A3 (en) | 1997-08-21 |
EP0812499A2 (en) | 1997-12-17 |
FI956359A (fi) | 1997-06-30 |
FI100041B (fi) | 1997-08-29 |
WO1997024816A2 (en) | 1997-07-10 |
FI956359A0 (fi) | 1995-12-29 |
CN1179244A (zh) | 1998-04-15 |
US6137824A (en) | 2000-10-24 |
NO973959D0 (no) | 1997-08-28 |
AU714343B2 (en) | 1999-12-23 |
EP0812499B1 (en) | 2003-07-02 |
ATE244471T1 (de) | 2003-07-15 |
JPH11504188A (ja) | 1999-04-06 |
DE69628915D1 (de) | 2003-08-07 |
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Legal Events
Date | Code | Title | Description |
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FC2A | Withdrawal, rejection or dismissal of laid open patent application |