[go: up one dir, main page]

DK1173940T3 - Method for quality control of digital radio transmission in the medium and short wave range - Google Patents

Method for quality control of digital radio transmission in the medium and short wave range

Info

Publication number
DK1173940T3
DK1173940T3 DK00917059T DK00917059T DK1173940T3 DK 1173940 T3 DK1173940 T3 DK 1173940T3 DK 00917059 T DK00917059 T DK 00917059T DK 00917059 T DK00917059 T DK 00917059T DK 1173940 T3 DK1173940 T3 DK 1173940T3
Authority
DK
Denmark
Prior art keywords
medium
quality
short wave
wave range
audio
Prior art date
Application number
DK00917059T
Other languages
Danish (da)
Inventor
Dietmar Rudolph
Original Assignee
Deutsche Telekom Ag
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 Deutsche Telekom Ag filed Critical Deutsche Telekom Ag
Application granted granted Critical
Publication of DK1173940T3 publication Critical patent/DK1173940T3/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/3488—Multiresolution systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/382—Monitoring; Testing of propagation channels for resource allocation, admission control or handover
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/12—Arrangements for observation, testing or troubleshooting

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Quality & Reliability (AREA)
  • Transmitters (AREA)
  • Circuits Of Receivers In General (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)

Abstract

Digital transmissions in the medium and short wave range show a threshold value depending on the signal-to-noise ratio above which the audio quality received is perfect and below which no audio reception is possible. In order to prevent a sudden threshold , hierarchical modulation (Graceful Degradation) is used, which is associated with disadvantages such as reduced audio signal data, reduced coverage area with high reception quality and increased price for the receiver. According to the invention, alternatives to "Graceful Degradation" are provided, whereby modulation and/or coding are influenced in the transmitter depending on the quality data of the received signal detected by a monitor station or alternative transmission frequencies are determined. Interrogation of quality data from the monitor station can be easily effected via the Internet.
DK00917059T 1999-04-22 2000-04-07 Method for quality control of digital radio transmission in the medium and short wave range DK1173940T3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19918829A DE19918829A1 (en) 1999-04-22 1999-04-22 Quality control method for digital radio broadcasting transmission by correcting bit error below threshold

Publications (1)

Publication Number Publication Date
DK1173940T3 true DK1173940T3 (en) 2006-04-18

Family

ID=7905852

Family Applications (1)

Application Number Title Priority Date Filing Date
DK00917059T DK1173940T3 (en) 1999-04-22 2000-04-07 Method for quality control of digital radio transmission in the medium and short wave range

Country Status (9)

Country Link
EP (1) EP1173940B1 (en)
JP (1) JP2002543665A (en)
CN (1) CN1347599A (en)
AT (1) ATE313179T1 (en)
DE (2) DE19918829A1 (en)
DK (1) DK1173940T3 (en)
ES (1) ES2251983T3 (en)
RU (1) RU2225678C2 (en)
WO (1) WO2000065755A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003087209A (en) * 2001-09-06 2003-03-20 Matsushita Electric Ind Co Ltd Digital broadcast display device
EP1318624A1 (en) * 2001-12-04 2003-06-11 Nagra-Futuris SA Data acquisition system and mobile terminal
GB0207517D0 (en) * 2002-04-02 2002-05-08 Pace Micro Tech Ltd Broadcast data receiver
US7751811B2 (en) 2004-06-08 2010-07-06 Kudelski Sa Data acquisition system and mobile terminal

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61101134A (en) * 1984-10-24 1986-05-20 Kokusai Electric Co Ltd Diversity reception method
JPS63184420A (en) * 1986-09-04 1988-07-29 Nippon Telegr & Teleph Corp <Ntt> Signal transmission system in mobile communication
JPS63172536A (en) * 1987-01-09 1988-07-16 Mitsubishi Electric Corp Digital communication equipment for variable coding rate
CA1306502C (en) * 1988-10-21 1992-08-18 Paul J. Cizek Simulcast broadcasting system and method
US5225902A (en) * 1990-03-20 1993-07-06 Scientific-Atlanta, Inc. Automatic frequency selection in a bi-directional cable television system
JPH04276922A (en) * 1991-03-04 1992-10-02 Mitsubishi Electric Corp Radio communication equipment
JPH05110539A (en) * 1991-10-17 1993-04-30 Fujitsu Ltd Digital transmission system
JPH0779319B2 (en) * 1992-07-06 1995-08-23 朝日放送株式会社 Broadcasting system
ZA946674B (en) * 1993-09-08 1995-05-02 Qualcomm Inc Method and apparatus for determining the transmission data rate in a multi-user communication system
WO1996007260A1 (en) * 1994-08-31 1996-03-07 Sony Corporation Signal transmitter, signal receiver, and signal transmitting-receiving method
JPH08307298A (en) * 1995-04-28 1996-11-22 Miharu Tsushin Kk Tv signal processor for catv system
FR2757725B1 (en) * 1996-12-20 2001-10-05 Thomson Csf HIERARCHICAL METHOD FOR TRANSMISSION AND DIGITAL BROADCASTING OF RADIO TRANSMISSIONS
WO1998042090A1 (en) * 1997-03-14 1998-09-24 Siemens Aktiengesellschaft Method for transmitting information to a mobile receiver such as a pager, using radio transmitters
US6088588A (en) * 1997-03-25 2000-07-11 Nortel Networks Corporation Method and wireless terminal for monitoring communications and providing network with terminal operation information
US6898437B1 (en) * 1997-08-01 2005-05-24 Iwics Inc. Power adaption in a multi-station network
DE19805647C2 (en) * 1998-02-12 1999-12-16 Rundfunkbetriebstechnik Gmbh Method for detecting the transmission quality of digital broadcast signals

Also Published As

Publication number Publication date
EP1173940B1 (en) 2005-12-14
CN1347599A (en) 2002-05-01
WO2000065755A2 (en) 2000-11-02
RU2225678C2 (en) 2004-03-10
ATE313179T1 (en) 2005-12-15
EP1173940A2 (en) 2002-01-23
ES2251983T3 (en) 2006-05-16
JP2002543665A (en) 2002-12-17
DE19918829A1 (en) 2000-10-26
DE50011855D1 (en) 2006-01-19
WO2000065755A3 (en) 2001-03-15

Similar Documents

Publication Publication Date Title
EP0801473A3 (en) Methods and apparatus for high data rate transmission in narrowband mobile radio channels
CA2303553A1 (en) A system and method for mitigating intermittent interruptions in an audio radio broadcast system
WO1997044921A3 (en) Method and apparatus for communicating information using a data tuner
GB9803623D0 (en) Audio information transmission
NO20011907L (en) Method of transmission of data, as well as radio system
WO2006049705A3 (en) Forming, steering, selecting beam paths in azimuth &amp; elevation
WO2000011817A3 (en) Method for transmitting information and suitable system therefor
FI883827A (en) A method for transmitting and / or interpreting additional information contained in a broadcast signal on the receiving side
AU2003233282A1 (en) Gps receiver with improved immunity to burst transmissions
CA2248062A1 (en) An apparatus, method and article of manufacture for carrier frequency compensation in an fm radio receiver
AU2002351130A1 (en) Parameter estimation for adaptive antenna system
MY116899A (en) An apparatus, method and article of manufacture for carrier frequency compensation in a fm radio transmitter.
US6456645B1 (en) Digital wireless audio transmission system
WO1999003227A3 (en) Method for eliminating interference in an ofdm radio receiver
CA2357689A1 (en) Optical communication system and optical receiver
DK1173940T3 (en) Method for quality control of digital radio transmission in the medium and short wave range
CA2248072A1 (en) An apparatus, method and article of manufacture for carrier frequency compensation in an fm radio
WO1998044744A3 (en) Data transmission method, reception method and receiver using several multiple access methods
EP0865176A3 (en) Receiver for receiving digital audio programmes as well as the supplementary data contained in the audio programmes
EP1217729A3 (en) Broadcast data receivers and adaptive gain control thresholds to optimise received signal quality
ATE305674T1 (en) SATELLITE COMMUNICATION SYSTEM WITH VARIABLE DATA RATE ON MULTIPLE CARRIER
WO1998032232A3 (en) Assessment of digital signals, especially radio data signals
RU94037225A (en) Method for forming reference oscillation for coherent detection of phase-shift signals and device for its realization
WO2003098824A3 (en) Demodulator for pulse-position modulated signals, demodulation method and signal receiver equipped with same
DK0609325T3 (en) Method for transmitting digitized, stereophonic audio signals via interference-free radio channels