FI114177B - Digitaliserare och digitaliseringsförfarande för bredbandssignal - Google Patents

Digitaliserare och digitaliseringsförfarande för bredbandssignal Download PDF

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Publication number
FI114177B
FI114177B FI963345A FI963345A FI114177B FI 114177 B FI114177 B FI 114177B FI 963345 A FI963345 A FI 963345A FI 963345 A FI963345 A FI 963345A FI 114177 B FI114177 B FI 114177B
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segment
signal
bandwidth
operating
segments
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FI963345A
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English (en)
Finnish (fi)
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FI963345A (sv
FI963345A0 (sv
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Robert C Elder
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Motorola Inc
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    • 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
    • H04B1/0003—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain
    • H04B1/0007—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain wherein the AD/DA conversion occurs at radiofrequency or intermediate frequency stage
    • H04B1/0025—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain wherein the AD/DA conversion occurs at radiofrequency or intermediate frequency stage using a sampling rate lower than twice the highest frequency component of the sampled signal
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12—Analogue/digital converters
    • H03M1/1205—Multiplexed conversion systems
    • H03M1/121—Interleaved, i.e. using multiple converters or converter parts for one channel
    • 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
    • H04B1/0003—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain
    • 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
    • H04B1/0003—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain
    • H04B1/0028—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain wherein the AD/DA conversion occurs at baseband stage
    • H04B1/0032—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain wherein the AD/DA conversion occurs at baseband stage with analogue quadrature frequency conversion to and from the baseband
    • 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
    • H04B1/16—Circuits
    • H04B1/26—Circuits for superheterodyne receivers
    • 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
    • H04B1/16—Circuits
    • H04B1/26—Circuits for superheterodyne receivers
    • H04B1/28—Circuits for superheterodyne receivers the receiver comprising at least one semiconductor device having three or more electrodes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J1/00—Frequency-division multiplex systems
    • H04J1/02—Details
    • H04J1/04—Frequency-transposition arrangements
    • H04J1/05—Frequency-transposition arrangements using digital techniques
    • 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
    • H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
    • H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
    • 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
    • H04L1/22—Arrangements for detecting or preventing errors in the information received using redundant apparatus to increase reliability
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
    • H03D3/006—Demodulation of angle-, frequency- or phase- modulated oscillations by sampling the oscillations and further processing the samples, e.g. by computing techniques
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/18—Information format or content conversion, e.g. adaptation by the network of the transmitted or received information for the purpose of wireless delivery to users or terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Claims (11)

1. Digitaliserare för en bredbandssignal, kanne-tecknad av att den omfattar: ett flertal signalvägar; 5 där ätminstone en av nämnda flertal signalvägar omfattar ett första filter, en blandare, ett andra filter, en analog-digital-omvandlare med en viss samplingsfrekvens och ett digitalt filter; de signalvägar som äterstär av det nämnda flertalet 10 signalvägar omfattar ett första filter, en blandare, ett andra filter, en analog-digital-omvandlare med en viss samplingsfrekvens, ett digitalt filter och en interpolator, vars interpolationsfrekvens utgörs av en heltalsmultipel av samplingsfrekvensen för en av nägon 15 signalvägs analog-digital-omvandlare; en fördelare för att uppdela bredbandssignalen i ett ::: flertal segment motsvarande signalvägarna, varvid ät- minstone ett av det nämnda flertalet segment överförs * ♦ · • ‘/· tili den första signalvägen och de äterstäende t» t • 20 segmenten överförs pä motsvarande sätt tili de äterstäende av det nämnda flertalet signalvägar; samt » * · • » · en summator, som kommunicerar med var och en av det nämnda flertalet signalvägar. * * * • · I · S •\j 2. Digitaliserare för en bredbandssignal i enlighet med * · 25 patentkrav 1, kännetecknad av att > I » .* . bandbredden för de äterstäende av nämnda flertal • · · • a » segment är mindre än övergängsbandets bredd och mindre a f än hälften av bandredden för det nämnda ätminstone ena 18 11417/ segmentet, och att samplingsfrekvensen för den nämnda ätminstone ena signalvägen av flertalet signalvägar är väsentligen lika hög som tvä ganger samplingsfrekvensen för de äterstäende signalvägarna av flertalet signal-5 vägar.
3. Digitaliserare för en bredbandssignai i enlighet med patentkrav 1, kännetecknad av att bandbredden för de äterstäende av nämnda flertal segment är större än övergängsbandets bredd och mindre 10 än hälften av bandredden för det nämnda ätminstone ena segmentet, och att samplingsfrekvensen för den nämnda ätminstone ena signalvägen av flertalet signalvägar är väsentligen lika stor som samplingsfrekvensen för de äterstäende av flertalet signalvägar, och att den 15 nämnda ätminstone ena signalvägen av flertalet signalvägar vidare omfattar en interpolator, ett andra digitalt filter och en decimator.
4. Förfarande för att digitalisera en bredbandssignai med ett flertal brukssegment, kännetecknat • * : 20 av att förfarandet omfattar följande steg: - * · « « « i nämnda bredbandssignai omvandlas tili en mellan- • « » .* .* frekvenssignal, varvid ätminstone ett av nämnda flertal » « ' * brukssegment överförs tili en första mellanfrekvens pä en analog-digital-omvandlares Nyquist-band, där det 25 nämnda ätminstone ena brukssegmentet av flertalet j brukssegment uppvisar en frekvensbandsbredd, och varvid ';** de brukssegment som äterstär av nämnda flertal bruks- t t segment överförs tili mellanf rekvenser väsentligen i närheten av den första mellanf rekvensen; • · · « » ·;··· 30 vart och ett av nämnda flertal brukssegment filtreras; is 11417 det nämnda ätminstone ena brukssegmentet av flertalet brukssegment digitaliseras pä en första samplingsfrekvens, som är väsentligen lika hög som tvä ganger frekvensbandsbredden för det nämnda ätminstone ena 5 brukssegmentet av flertalet brukssegment; de äterstäende av nämnda flertal brukssegment digitaliseras pä en andra samplingsfrekvens, som utgör väsentligen hälften av den första samplingsfrekvensen; vart och ett av nämnda flertal brukssegment filtreras 10 digitalt; de äterstäende brukssegmenten interpoleras pä en inter-poleringsfrekvens, som utgör en heltalsmultipel av analog-digital-omvandlarens samplingsfrekvens; och nämnda flertal brukssegment summeras.
5. Digitaliserare for en bredbandssignal, k ä n n e - tecknad av att den omfattar: • · • · j. en första signalväg, som omfattar ett filter, en blandare, en analog-digital-omvandlare, som opererar pä en första samplingsfrekvens, och ett digitalt filter; * « » » 20 en andra signalväg, som omfattar ett filter, en blandare, en analog-digital-omvandlare, som opererar pä ;· en andra samplingsfrekvens, ett digitalt filter och en interpolator inställd pä en interpolationsfrekvens, som : utgör en heltalsmultipel av nägondera samplings- * · 1 ,25 f rekvensen; » I · * · · * : en fördelare för att uppdela bredbandssignalens första » » segment pä den första signalvägen och för att uppdela 20 11417- bredbandssignalens andra segment pä den andra signal-vägen; samt en summator, som kommunicerar med den första och den andra signalvägen.
6. Digitaliserare för en bredbandssignal i enlighet med patentkrav 5, kännetecknad av att det andra segmentets bandredd är större än övergängbandets bredd och mindre än hälften av bandbredden för det första segmentet, och att den första signalvägen vidare 10 omfattar en interpolator, ett andra digitalt filter och en decimator, och att den andra samplingsfrekvensen är väsentligen lika hög som hälften av den första samplingsfrekvensen.
7. Digitaliserare för en bredbandssignal i enlighet med 15 patentkrav 5, kännetecknad av att det andra segmentets bandredd är större än hälften av bandbredden för det första segmentet och mindre än det första segmentets bandbredd, och att den första · signalvägen vidare omfattar en interpolator, ett andra 20 digitalt filter och en decimator, och att den andra : samplingsfrekvensen är väsentligen lika hög som den * » · ·' första samplingsfrekvensen. 2i 1141/, en första mellanfrekvens pä en analog-digital-omvandlares Nyquist-band, och det andra segmentet över-förs tili en mellanfrekvens väsentligen i närheten av den första mellanfrekvensen; 5 det första och andra brukssegmentet filtreras; det första brukssegmentet digitaliseras pä en första samplingsfrekvens, som är väsentligen lika hög som tvä ganger första bandbredden; det andra brukssegmentet digitaliseras pä en andra 10 samplingsfrekvens, som är väsentligen lika hög som hälften av den första samplingsfrekvensen; det första och andra brukssegmentet filtreras digitalt; det andra brukssegmentet interpoleras pä en inter-poleringsfrekvens, vilken utgörs av en heltalsmultipel 15 av nägondera samplingsfrekvensen; 22 11417. det första brukssegmentet decimeras.
10. Förfarande för att digitalisera en bredbandssignal, kännetecknat av att förfarandet omfattar följande steg: 5 bredbandssignalen mottas, vilken bredbandssignal uppvisar ett flertal brukssegment, av vilka vart och ett uppvisar en egen medelfrekvens och segment-bandbredd; ätminstone ett av nämnda brukssegment filtreras medelst 10 ett filter med ett övergängsomräde; det nämnda atminstone ena brukssegmentet samplas pä basis av övergängsomrädet och pä en samplingsfrekvens baserad pä bandbredden för det nämnda ätminstone ena brukssegmentet; och 15 det nämnda ätminstone ena brukssegmentets medelfrekvens överförs pä basis av övergängsomrädet och segmentets ·,: · bandbredd.
FI963345A 1994-12-29 1996-08-27 Digitaliserare och digitaliseringsförfarande för bredbandssignal FI114177B (sv)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US36620594A 1994-12-29 1994-12-29
US36620594 1994-12-29
US9515183 1995-11-22
PCT/US1995/015183 WO1996021292A1 (en) 1994-12-29 1995-11-22 Wideband frequency signal digitizer and method

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FI963345A FI963345A (sv) 1996-08-27
FI963345A0 FI963345A0 (sv) 1996-08-27
FI114177B true FI114177B (sv) 2004-08-31

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US (1) US5659546A (sv)
JP (1) JP3530193B2 (sv)
KR (1) KR100203318B1 (sv)
CA (1) CA2181807C (sv)
DE (1) DE19581533C2 (sv)
FI (1) FI114177B (sv)
FR (1) FR2729022B1 (sv)
GB (1) GB2296611B (sv)
IL (1) IL116167A (sv)
SE (1) SE520982C2 (sv)
WO (1) WO1996021292A1 (sv)

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SE520982C2 (sv) 2003-09-16
JPH09510074A (ja) 1997-10-07
CA2181807A1 (en) 1996-07-11
FR2729022B1 (fr) 1999-12-31
FI963345A (sv) 1996-08-27
WO1996021292A1 (en) 1996-07-11
CA2181807C (en) 1999-09-28
US5659546A (en) 1997-08-19
KR100203318B1 (ko) 1999-06-15
DE19581533T1 (de) 1997-06-05
GB9526042D0 (en) 1996-02-21
DE19581533C2 (de) 1999-02-25
FR2729022A1 (fr) 1996-07-05
SE9603089L (sv) 1996-09-17
GB2296611A (en) 1996-07-03
JP3530193B2 (ja) 2004-05-24
FI963345A0 (sv) 1996-08-27
KR970701463A (ko) 1997-03-17
IL116167A (en) 1999-06-20
IL116167A0 (en) 1996-01-31
SE9603089D0 (sv) 1996-08-27
GB2296611B (en) 1998-07-22

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