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The signal-to-interference ratio (SIR or S/I), also known as the carrier-to-interference ratio (CIR or C/I), is the quotient between the average received modulated carrier power S or C and the average received co-channel interference power I, i.e. crosstalk, from other transmitters than the useful signal.

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  • The signal-to-interference ratio (SIR or S/I), also known as the carrier-to-interference ratio (CIR or C/I), is the quotient between the average received modulated carrier power S or C and the average received co-channel interference power I, i.e. crosstalk, from other transmitters than the useful signal. The CIR resembles the carrier-to-noise ratio (CNR or C/N), which is the signal-to-noise ratio (SNR or S/N) of a modulated signal before demodulation. A distinction is that interfering radio transmitters contributing to I may be controlled by radio resource management, while N involves noise power from other sources, typically additive white gaussian noise (AWGN). (en)
  • Dans le domaine des télécommunications et, en particulier, en radiotéléphonie et mobile, le rapport signal sur interférence (abrégé en SIR pour (en) Signal-to-Interference Ratio) ou rapport signal sur brouillage est le quotient entre la puissance reçue du signal et les interférences dues aux autres signaux utilisant la même bande de fréquences. C’est un indicateur de la qualité d’un réseau de téléphonie mobile utilisé dans la planification et la maintenance du réseau.Il s'exprime généralement en décibels (dB). (fr)
  • Il rapporto segnale/interferenza (S/I o SIR, da Signal to Interference Ratio) è il rapporto, in telecomunicazioni, tra la potenza media del segnale utile e la potenza della somma dei segnali interferenti (segnali non utili che ricadono nella stessa banda del primo). Viene chiamato anche rapporto portante/interferenza (C/I o CIR, da Carrier to Interference Ratio). È uno degli elementi base per la pianificazione e gestione di un'infrastruttura di comunicazione radiomobile. (it)
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  • Dans le domaine des télécommunications et, en particulier, en radiotéléphonie et mobile, le rapport signal sur interférence (abrégé en SIR pour (en) Signal-to-Interference Ratio) ou rapport signal sur brouillage est le quotient entre la puissance reçue du signal et les interférences dues aux autres signaux utilisant la même bande de fréquences. C’est un indicateur de la qualité d’un réseau de téléphonie mobile utilisé dans la planification et la maintenance du réseau.Il s'exprime généralement en décibels (dB). (fr)
  • Il rapporto segnale/interferenza (S/I o SIR, da Signal to Interference Ratio) è il rapporto, in telecomunicazioni, tra la potenza media del segnale utile e la potenza della somma dei segnali interferenti (segnali non utili che ricadono nella stessa banda del primo). Viene chiamato anche rapporto portante/interferenza (C/I o CIR, da Carrier to Interference Ratio). È uno degli elementi base per la pianificazione e gestione di un'infrastruttura di comunicazione radiomobile. (it)
  • The signal-to-interference ratio (SIR or S/I), also known as the carrier-to-interference ratio (CIR or C/I), is the quotient between the average received modulated carrier power S or C and the average received co-channel interference power I, i.e. crosstalk, from other transmitters than the useful signal. (en)
rdfs:label
  • Rapport signal sur interférence (fr)
  • Rapporto segnale/interferenza (it)
  • Signal-to-interference ratio (en)
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