BR9305648A - Processo para estimar qualidade de canal e radiotelefone capaz de se comunicar entre múltiplos transceptores fixos - Google Patents

Processo para estimar qualidade de canal e radiotelefone capaz de se comunicar entre múltiplos transceptores fixos

Info

Publication number
BR9305648A
BR9305648A BR9305648A BR9305648A BR9305648A BR 9305648 A BR9305648 A BR 9305648A BR 9305648 A BR9305648 A BR 9305648A BR 9305648 A BR9305648 A BR 9305648A BR 9305648 A BR9305648 A BR 9305648A
Authority
BR
Brazil
Prior art keywords
radiotelephone
communicating
multiple fixed
estimating channel
fixed transceivers
Prior art date
Application number
BR9305648A
Other languages
English (en)
Inventor
Christopher P Larosa
Michael John Carney
Original Assignee
Motorola Inc
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 Motorola Inc filed Critical Motorola Inc
Publication of BR9305648A publication Critical patent/BR9305648A/pt

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/20—Arrangements for detecting or preventing errors in the information received using signal quality detector
    • H04L1/208—Arrangements for detecting or preventing errors in the information received using signal quality detector involving signal re-encoding
    • 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
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
    • H04B1/1027—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/20—Monitoring; Testing of receivers

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
BR9305648A 1992-09-30 1993-09-16 Processo para estimar qualidade de canal e radiotelefone capaz de se comunicar entre múltiplos transceptores fixos BR9305648A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/954,172 US5323421A (en) 1992-09-30 1992-09-30 Method and apparatus of estimating channel quality in a receiver
PCT/US1993/008789 WO1994008402A1 (en) 1992-09-30 1993-09-16 Method and apparatus of estimating channel quality in a receiver

Publications (1)

Publication Number Publication Date
BR9305648A true BR9305648A (pt) 1995-06-13

Family

ID=25495036

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9305648A BR9305648A (pt) 1992-09-30 1993-09-16 Processo para estimar qualidade de canal e radiotelefone capaz de se comunicar entre múltiplos transceptores fixos

Country Status (11)

Country Link
US (1) US5323421A (pt)
JP (1) JP3038919B2 (pt)
KR (1) KR970004774B1 (pt)
CN (1) CN1070325C (pt)
AU (1) AU656487B2 (pt)
BR (1) BR9305648A (pt)
CA (1) CA2120714C (pt)
DE (1) DE4394943C1 (pt)
MX (1) MX9306057A (pt)
RU (1) RU2138909C1 (pt)
WO (1) WO1994008402A1 (pt)

Families Citing this family (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6148423A (en) * 1992-07-22 2000-11-14 Alcatel Cit Signal transmission performance optimization device in a system for transmitting digital data, especially on an optical link
DE4226599C2 (de) * 1992-08-11 1994-08-04 Siemens Ag Verfahren zur Fehlererkennung in digitalen Kommunikationssystemen
US5497383A (en) * 1993-01-22 1996-03-05 Motorola, Inc. Error detector circuit for receiver operative to receive discretely-encoded signals
US5561673A (en) * 1993-04-16 1996-10-01 Matsushita Electric Industrial Co., Ltd. Antenna switched diversity reciever
US5440582A (en) * 1993-05-28 1995-08-08 Motorola, Inc. Method and apparatus for determining signal usability
US5490148A (en) * 1993-12-15 1996-02-06 Motorola, Inc. Bit error rate estimator
US5563918A (en) * 1993-12-17 1996-10-08 Rockwell International Method of selecting optimum frequency in skywave communication apparatus
ATE230532T1 (de) * 1994-11-25 2003-01-15 T Mobile Deutschland Gmbh Verfahren zur ermittlung einer die qualität einer digitalen sprachübertragung kennzeichnenden grösse
JP3578839B2 (ja) * 1995-07-18 2004-10-20 三菱電機株式会社 ディジタル受信機
GB2306866B (en) * 1995-10-26 1998-08-05 Bosch Gmbh Robert Method of obtaining information about the residual errors in a transmitted channel-decoded digital signal
JP3216985B2 (ja) * 1996-03-08 2001-10-09 三菱電機株式会社 回線制御装置
US5790596A (en) * 1996-03-15 1998-08-04 Motorola, Inc. Radiotelephone communication unit displaying chronological information
US5815507A (en) * 1996-04-15 1998-09-29 Motorola, Inc. Error detector circuit for digital receiver using variable threshold based on signal quality
US5768285A (en) * 1996-05-31 1998-06-16 National Semiconductor Corporation Circuit for evaluating bit error rate performance of a data decoder having a viterbi detector
US6404755B1 (en) * 1996-11-07 2002-06-11 Harris Broadband Wireless Access, Inc. Multi-level information mapping system and method
DE19736626C1 (de) * 1997-08-22 1998-12-10 Siemens Ag Verfahren zur Datenübertragung in einem digitalen Übertragungssystem bei paketvermitteltem Dienst
US6215827B1 (en) * 1997-08-25 2001-04-10 Lucent Technologies, Inc. System and method for measuring channel quality information in a communication system
US6137830A (en) * 1998-01-16 2000-10-24 Motorola Measuring bit error rate performance of a receiver by the receiver and conveying measurement acoustically
FI112739B (fi) * 1998-05-25 2003-12-31 Nokia Corp Menetelmä ja laitteisto häiritsevän signaalin havaitsemiseen radiovastaanottimessa
US6370189B1 (en) * 1998-05-27 2002-04-09 Ericsson Inc. Apparatus and methods for variable delay channel tracking
US6091716A (en) * 1998-07-01 2000-07-18 Motorola, Inc. Receive signal quality estimates suitable for pagers used in satellite-based communication systems
US7016296B2 (en) 2000-10-16 2006-03-21 Broadcom Corporation Adaptive modulation for fixed wireless link in cable transmission system
AT410385B (de) * 2000-12-14 2003-04-25 Siemens Ag Oesterreich Verfahren zum bestimmen der kanalgüte in digitalen übertragungssystemen
GB2370470A (en) * 2000-12-20 2002-06-26 Motorola Inc Estimating signal quality from orthogonal re-encoded symbol vectors
US8325590B2 (en) * 2002-02-27 2012-12-04 Apple Inc. OFDM communications system
CN100397810C (zh) * 2002-09-30 2008-06-25 勒克罗伊公司 用于比特误差率分析的方法和装置
DE10318830B4 (de) * 2003-04-25 2005-05-12 Infineon Technologies Ag Verfahren und Auswertung einer Bitfehlerratenmessung zur Angabe einer Kanalqualität
US7305056B2 (en) 2003-11-18 2007-12-04 Ibiquity Digital Corporation Coherent tracking for FM in-band on-channel receivers
KR100621432B1 (ko) 2004-04-21 2006-09-08 삼성전자주식회사 복수의 송신 안테나들을 사용하는 다중셀 직교 주파수분할 다중 방식 통신시스템에서 채널 추정 장치 및 방법
WO2006095398A1 (ja) * 2005-03-07 2006-09-14 Fujitsu Limited 無線通信システム
GB2432086B (en) * 2005-11-01 2007-12-12 Motorola Inc Retransmission in a cellular communication system
CN101039168B (zh) * 2007-03-16 2010-08-25 威盛电子股份有限公司 位错误机率估测方法及应用该方法的接收器
KR101211432B1 (ko) * 2007-12-27 2012-12-12 보드 오브 트러스티즈 오브 미시건 스테이트 유니버시티 적응적 비디오 전송을 위한 채널용량 추정 및 코딩 레이트 조정 방법과, 그를 이용한 비디오 전송/수신 장치
US8385222B2 (en) * 2009-10-26 2013-02-26 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for channel quality derivation
US9722758B2 (en) * 2015-05-20 2017-08-01 Hong Kong Applied Science and Technology Research Institute Company Limited Channel-quality estimation for a wireless channel

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1322487A1 (ru) * 1986-02-19 1987-07-07 Военная Краснознаменная академия связи им.С.М.Буденного Устройство дл прогнозировани состо ни канала св зи
DE3627135C2 (de) * 1986-08-09 1994-11-24 Philips Patentverwaltung Bitsynchronisation eines Datenblocks in einem Empfänger
US5144642A (en) * 1990-06-07 1992-09-01 Stanford Telecommunications, Inc Interference detection and characterization method and apparatus
US5214687A (en) * 1991-06-05 1993-05-25 Nokia Mobile Phones Ltd. Method to determine transmission quality

Also Published As

Publication number Publication date
KR970004774B1 (ko) 1997-04-03
DE4394943C1 (de) 1996-05-23
JP3038919B2 (ja) 2000-05-08
WO1994008402A1 (en) 1994-04-14
MX9306057A (es) 1994-03-31
JPH07501678A (ja) 1995-02-16
CA2120714A1 (en) 1994-04-14
CA2120714C (en) 1998-11-24
US5323421A (en) 1994-06-21
AU656487B2 (en) 1995-02-02
CN1070325C (zh) 2001-08-29
CN1095534A (zh) 1994-11-23
AU4927393A (en) 1994-04-26
RU2138909C1 (ru) 1999-09-27

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Legal Events

Date Code Title Description
EE Request for examination
FB36 Technical and formal requirements: requirement - article 36 of industrial property law
FF Decision: intention to grant
FG9A Patent or certificate of addition granted
B21A Patent or certificate of addition expired [chapter 21.1 patent gazette]

Free format text: PATENTE EXTINTA EM 16/09/2013