Consiglio Nazionale delle Ricerche

Tipo di prodottoRapporto tecnico
TitoloPerformance Assessment of Single Channel Relaying Echo Cancellers
Anno di pubblicazione2015
FormatoElettronico
Autore/iFlavio Zabini, Gianni Pasolini, Oreste Andrisano
Affiliazioni autoriUniversity of Bologna CNR, University of Bologna CNR, University of Bologna
Autori CNR e affiliazioni
  • ORESTE ANDRISANO
  • GIANNI PASOLINI
Lingua/e
  • inglese
SintesiThe most relevant impairment experienced by onchannel repeaters (OCRs) is the presence of a coupling-channel between the transmitting and receiving antennas, that generates unwanted echoes. Echoes critically influence the overall system behavior, with harmful effects on the signal quality and, above all, pose a threat on the system integrity. Echo cancellers are usually adopted, therefore, to remove unwanted coupling contributions. In this paper we investigate the OCR stability problems arising from the joint effect of echo estimation errors and the quantization of the echo-cancelling filter taps. The probability of OCR instability is analytically derived and some performances figures are provided varying the quantization level and the channel model in realistic scenarios.
Lingua sintesieng
Altra sintesi-
Lingua altra sintesi-
Pagine da1
Pagine a23
Pagine totali23
Serie/Collana-
Numero volume della serie/collana-
ISBN-
Editore-
Parole chiaverepeater, echo canceller, stability
Link (URL, URI)-
Titolo parallelo-
ID report/working paper-
Note/Altre informazioni-
Strutture CNR
  • IEIIT — IEIIT - Sede secondaria di Bologna
Moduli CNR
    Progetti Europei-
    Allegati
    • Performance Assessment of Single Channel Relaying Echo Cancellers
      Descrizione: The most relevant impairment experienced by onchannel repeaters (OCRs) is the presence of a coupling-channel between the transmitting and receiving antennas, that generates unwanted echoes. Echoes critically influence the overall system behavior, with harmful effects on the signal quality and, above all, pose a threat on the system integrity. Echo cancellers are usually adopted, therefore, to remove unwanted coupling contributions. In this paper we investigate the OCR stability problems arising from the joint effect of echo estimation errors and the quantization of the echo-cancelling filter taps. The probability of OCR