DE69232372D1 - Erkennung eines Verstärkerausfalls - Google Patents

Erkennung eines Verstärkerausfalls

Info

Publication number
DE69232372D1
DE69232372D1 DE69232372T DE69232372T DE69232372D1 DE 69232372 D1 DE69232372 D1 DE 69232372D1 DE 69232372 T DE69232372 T DE 69232372T DE 69232372 T DE69232372 T DE 69232372T DE 69232372 D1 DE69232372 D1 DE 69232372D1
Authority
DE
Germany
Prior art keywords
detection
amplifier failure
amplifier
failure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
DE69232372T
Other languages
English (en)
Other versions
DE69232372T2 (de
Inventor
Hironori Sakamoto
Satoru Ohara
Toshio Nojima
Shoichi Narahashi
Maeta Maeta
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NTT Docomo Inc
Japan Radio Co Ltd
Nippon Telegraph and Telephone Corp
Original Assignee
NTT Docomo Inc
Japan Radio Co Ltd
Nippon Telegraph and Telephone Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NTT Docomo Inc, Japan Radio Co Ltd, Nippon Telegraph and Telephone Corp filed Critical NTT Docomo Inc
Application granted granted Critical
Publication of DE69232372D1 publication Critical patent/DE69232372D1/de
Publication of DE69232372T2 publication Critical patent/DE69232372T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • H04B1/76—Pilot transmitters or receivers for control of transmission or for equalising
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/20—Monitoring; Testing of receivers
    • H04B17/29—Performance testing

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
DE69232372T 1991-10-24 1992-10-23 Erkennung eines Verstärkerausfalls Expired - Lifetime DE69232372T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3277595A JP3052162B2 (ja) 1991-10-24 1991-10-24 屋外受信装置の異常監視装置

Publications (2)

Publication Number Publication Date
DE69232372D1 true DE69232372D1 (de) 2002-03-14
DE69232372T2 DE69232372T2 (de) 2002-08-22

Family

ID=17585640

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69232372T Expired - Lifetime DE69232372T2 (de) 1991-10-24 1992-10-23 Erkennung eines Verstärkerausfalls

Country Status (5)

Country Link
US (1) US5313657A (de)
EP (1) EP0539224B8 (de)
JP (1) JP3052162B2 (de)
CA (1) CA2081287C (de)
DE (1) DE69232372T2 (de)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2503889B2 (ja) * 1993-07-07 1996-06-05 日本電気株式会社 無線送受信装置の受信増幅器故障検出方式
CA2155693C (en) * 1994-08-25 1999-12-14 Daniel A. Fishman Performance monitoring and fault location in optical transmission systems
US5663963A (en) * 1995-07-17 1997-09-02 Ncr Corporation Method for detecting and reporting failures in EPL systems
US5635870A (en) * 1995-08-15 1997-06-03 David; Michael Efficient amplification techniques for non-linear amplifiers
US5742202A (en) * 1996-05-31 1998-04-21 Scientific-Atlanta, Inc. Method and apparatus for dynamic automatic gain control when pilot signal is lost
EP1101280B1 (de) * 1998-07-27 2004-09-15 Nokia Corporation Setup-verfahren für linearisierschaltung
DE69829757T2 (de) 1998-12-18 2006-01-12 Sony International (Europe) Gmbh Drei-Tor-Schaltung Empfänger
JP2001077767A (ja) 1999-09-01 2001-03-23 Matsushita Electric Ind Co Ltd 受信装置及び基地局装置及び無線通信システム
JP2001127715A (ja) * 1999-10-28 2001-05-11 Nec Corp 障害検出回路
US6556076B1 (en) * 2001-12-17 2003-04-29 Powerwave Technologies, Inc. Feed forward amplifier with amplifier stage failure detection using pilot tones
US7444132B2 (en) * 2003-04-04 2008-10-28 Nokia Corporation Apparatus, and associated method, for facilitating dynamic filtering of a receive signal
JP2010028799A (ja) * 2008-06-16 2010-02-04 Fujitsu Ltd 受信システム
US8634766B2 (en) 2010-02-16 2014-01-21 Andrew Llc Gain measurement and monitoring for wireless communication systems
GB201202791D0 (en) 2012-02-20 2012-04-04 Simpson Robert Methods and system for energy conversion and generation

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1278231A (en) * 1970-01-10 1972-06-21 Plessey Co Ltd Improvements in and relating to feedback control systems
JPS5639643A (en) * 1979-09-06 1981-04-15 Fujitsu Ltd Receiver
JPS57180240A (en) * 1981-04-28 1982-11-06 Nec Corp Diversity signal synthesizing control system
GB2104348B (en) * 1981-07-30 1984-12-12 Marconi Co Ltd Improvements in or relating to radio communication data systems
JPS61167233A (ja) * 1985-01-18 1986-07-28 Nec Corp 双方向ｃａｔｖ中継増幅器の自己診断回路
JPH02309829A (ja) * 1989-05-25 1990-12-25 Fujitsu Ltd 受信機モニタ

Also Published As

Publication number Publication date
CA2081287C (en) 1999-02-23
JPH05122170A (ja) 1993-05-18
EP0539224A2 (de) 1993-04-28
EP0539224B1 (de) 2002-01-23
JP3052162B2 (ja) 2000-06-12
CA2081287A1 (en) 1993-04-25
DE69232372T2 (de) 2002-08-22
US5313657A (en) 1994-05-17
EP0539224A3 (en) 1993-08-11
EP0539224B8 (de) 2002-10-09

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