SI2761746T1 - Sistemi in postopki za asinhrono re-modulacijo s prilagodljivo i/q nastavitvijo - Google Patents

Sistemi in postopki za asinhrono re-modulacijo s prilagodljivo i/q nastavitvijo Download PDF

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Publication number
SI2761746T1
SI2761746T1 SI201231180T SI201231180T SI2761746T1 SI 2761746 T1 SI2761746 T1 SI 2761746T1 SI 201231180 T SI201231180 T SI 201231180T SI 201231180 T SI201231180 T SI 201231180T SI 2761746 T1 SI2761746 T1 SI 2761746T1
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signal
modulated
error
transient
reception system
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SI201231180T
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English (en)
Inventor
Emerick Vann
Yen-Fang Chao
Youming Qin
Roland Matian
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Aviat Networks, Inc.
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Publication of SI2761746T1 publication Critical patent/SI2761746T1/sl

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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
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • 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
    • H04L1/206—Arrangements for detecting or preventing errors in the information received using signal quality detector for modulated signals
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/38—Angle modulation by converting amplitude modulation to angle modulation
    • H03C3/40—Angle modulation by converting amplitude modulation to angle modulation using two signal paths the outputs of which have a predetermined phase difference and at least one output being amplitude-modulated
    • H03C3/406—Angle modulation by converting amplitude modulation to angle modulation using two signal paths the outputs of which have a predetermined phase difference and at least one output being amplitude-modulated using a feedback loop containing mixers or demodulators
    • 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
    • H03D3/007—Demodulation of angle-, frequency- or phase- modulated oscillations by converting the oscillations into two quadrature related signals
    • H03D3/009—Compensating quadrature phase or amplitude imbalances
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
    • H03D7/16—Multiple-frequency-changing
    • H03D7/165—Multiple-frequency-changing at least two frequency changers being located in different paths, e.g. in two paths with carriers in quadrature
    • H03D7/166—Multiple-frequency-changing at least two frequency changers being located in different paths, e.g. in two paths with carriers in quadrature using two or more quadrature frequency translation stages
    • H03D7/168—Multiple-frequency-changing at least two frequency changers being located in different paths, e.g. in two paths with carriers in quadrature using two or more quadrature frequency translation stages using a feedback loop containing mixers or demodulators
    • 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
    • H04B1/0014—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 DSP [Digital Signal Processor] quadrature modulation and demodulation
    • 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
    • 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
    • H04B1/30—Circuits for homodyne or synchrodyne receivers
    • 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
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0036—Systems modifying transmission characteristics according to link quality, e.g. power backoff arrangements specific to the receiver
    • 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
    • H04L1/203—Details of error rate determination, e.g. BER, FER or WER
    • 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
    • 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
    • H04L27/38—Demodulator circuits; Receiver circuits
    • 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
    • H04L27/38—Demodulator circuits; Receiver circuits
    • H04L27/3845—Demodulator circuits; Receiver circuits using non - coherent demodulation, i.e. not using a phase synchronous carrier
    • H04L27/3854—Demodulator circuits; Receiver circuits using non - coherent demodulation, i.e. not using a phase synchronous carrier using a non - coherent carrier, including systems with baseband correction for phase or frequency offset
    • 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

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Power Engineering (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Transmitters (AREA)

Claims (16)

  1. PATENTNI ZAHTEVKI
    1. Sistem (200) za sprejem signala, zasnovan za pretvorbo prvega moduliranega signala v drugi modulirani signal, sistem (200) za sprejem signala obsega: l/Q demodulator (404), ki je konfiguriran za demoduliranje prvega moduliranega signala v in-fazni signal Ύ in kvadraturni "Q" signal, ki temelji na prvem signalu oscilatorja, pri čemer je prvi modulirani signal moduliran na osnovi drugega signala oscilatorja, ki je asinhronglede na prvi signal oscilatorja; l/Q signalni prilagojevalnik (208), zasnovan za prilagodljivo nastavitev signala Q, za povečanje razmerja med signalom in šumom (SNR) prehodnega signala, ki temelji na drugem moduliranem signalu, pri čemer je signal Q prilagojen na izračunano napako, določeno za prehodni signal; l/Q modulator (422), ki je konfiguriran tako, da ustvari vsaj del drugega moduliranega signala na osnovi signala I in nastavljenega signala Q; in dolvodni demodulator (218), ki je konfiguriran za demodulacijo prehodnega signala in za pomoč pri določanju izračunane napake prehodnega signala.
  2. 2. Sistem za sprejem signala po zahtevku 1, pri čemer prilagodljivo prilagajanje signala Q obsega prilagoditev ojačanja signala Q, ki temelji na izračunani napaki.
  3. 3. Sistem za sprejem signala po zahtevku 2, pri čemer prilagojevalnik signala Q vsebuje ojačevalnik s spremenljivim ojačenjem za nastavitev ojačanja Q signala.
  4. 4. Sistem za sprejem signala po zahtevku 1, pri čemer prilagodljivo nastavljanje signala Q obsega uporabo kvadraturnega popravka signala Q, ki temelji na izračunani napaki.
  5. 5. Sistem za sprejem signala po zahtevku 4, kjer regulator signala Q obsega multiplikator, konfiguriran za uporabo kvadraturne korekcije signala Q, ki temelji na signaluO in signalu I.
  6. 6. Sistem za sprejem signala po zahtevku 1, pri čemer izračunana napaka temelji na povprečni kvadratni napaki "MSE" prehodnega signala.
  7. 7. Sistem za sprejem signala po zahtevku 6, kjer nadaljni demodulator pomaga pri določanju izračunane napake z zagotavljanjem MSE za prehodni signal; ali kjer se izračunana napaka določi z uporabo najhitrejše padajočega algoritma na MSE.
  8. 8. Sistem za sprejem signala po zahtevku 1, pri čemer sistem za sprejem signala nadalje obsega: zunanjo enoto (out-door unit) "ODU" (320), ki obsega l/Q demodulator (404), prilagojevalnik signala Q in l/Q re-modulator (422); in notranjo enoto (in-door unit) "IDU" (326), povezano z ODU in obsega dolvodni demodulator.
  9. 9. Sistem za sprejem signala po zahtevku 8, kjer IDU sporoči izračunano napako ODU kot telemetrijske podatke.
  10. 10. Sistem za sprejem signala po zahtevku 1, ki nadalje obsega kartico za oddaljen dostop (RAC), ki obsega dolvodni demodulator; ali sistem za sprejem signalov, pri čemer prvi modulirani signal temelji na radijsko frekvenčnem signalu.
  11. 11. Postopek (700) za navzdol pretvorbo prvega moduliranega signala v drugi modulirani signal, pri čemer postopek obsega: demoduliranje prvega moduliranega signala v in-fazni signal "I" in kvadraturni signal "Q", ki temelji na prvem signalu oscilatorja, pri čemer je prvi modulirani signal modulira na podlagi drugega signala oscilatorja, ki je asinhron glede na prvi signal (702) oscilatorja; prilagodljivo nastavitev signal Q, za povečanje razmerja signal-šum (SNR) za prehodni signal, ki temelji na drugem moduliranem signalu, signal Q je prilagojen glede na izračunano napako prehodnega signala (704); generiranje drugega moduliranega signala na osnovi signala I in nastavljenega signala Q (706); in izračunavanje napake za prehodni signal, ki temelji na demodulaciji prehodnega signala (710).
  12. 12. Postopek po zahtevku 11, kjer prilagodljiva nastavitev signala Q obsega prilagoditev ojačanja signala Q na izračunano napako; ali kjer se ojačanje signala Q prilagaja z ojačevalnikom s spremenljivim ojačenjem.
  13. 13. Postopek po zahtevku 11, kjer prilagodljiva nastavitev signala Q obsega uporabo kvadraturne korekcije za signal Q, ki temelji na izračunani napaki.
  14. 14. Postopek po zahtevku 13, kjer se kvadraturna korekcija uporablja z množitelj, ki sprejme kvadratumi popravek in signal I.
  15. 15. Postopek po zahtevku 11, kjer izračunana napaka temelji na povprečni kvadratni napaki "MSE" prehodnega signala.
  16. 16. Postopek po zahtevku 15, kjer računanje napake obsega demodulator, ki zagotavlja MSE med demodulacijo prehodnega signala; ali kjer izračunavanje napake obsega z uporabo najhitrejše padajočega algoritma na MSE.
SI201231180T 2011-09-26 2012-09-26 Sistemi in postopki za asinhrono re-modulacijo s prilagodljivo i/q nastavitvijo SI2761746T1 (sl)

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US201161539341P 2011-09-26 2011-09-26
PCT/US2012/057379 WO2013049242A1 (en) 2011-09-26 2012-09-26 Systems and methods for asynchronous re-modulation with adaptive i/q adjustment
EP12835449.5A EP2761746B1 (en) 2011-09-26 2012-09-26 Systems and methods for asynchronous re-modulation with adaptive i/q adjustment

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CN (1) CN103959646A (sl)
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US20150215084A1 (en) 2015-07-30
US9337965B2 (en) 2016-05-10
EP2761746A1 (en) 2014-08-06
EP2761746B1 (en) 2017-12-20
CN103959646A (zh) 2014-07-30
US20140128016A1 (en) 2014-05-08
SG11201400983YA (en) 2014-06-27
US10090971B2 (en) 2018-10-02
US20150023456A1 (en) 2015-01-22
US9077425B2 (en) 2015-07-07
EP2761746A4 (en) 2015-07-22
US9813198B2 (en) 2017-11-07
US8630600B1 (en) 2014-01-14
MY164135A (en) 2017-11-30
US20180198573A1 (en) 2018-07-12
WO2013049242A1 (en) 2013-04-04

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