TERMIUM Plus®

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BANDWIDTH RATIO [12 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2012-04-17

English

Subject field(s)
  • Photoelectricity and Electron Optics
CONT

There's a convenient way to remember the significance of D[ star]:. Recall that it is the signal-to-noise ratio when one watt of radiation is incident on a detector with a sensitive area of 1 cm² and the noise is measured with an electrical bandwidth of 1 herts. Thus, the term D[ star]: is a normalized detectivity that's convenient for comparing the performance of detectors with different areas when used in circuits with different bandwidths.

French

Domaine(s)
  • Photo-électricité et optique électronique
DEF

Détectivité normalisée en fonction de la surface unitaire et de la largeur de bande unitaire.

Spanish

Save record 1

Record 2 - external organization data 2009-08-04

English

Subject field(s)
  • Compartment - ISO/IEC JTC 1 Information Technology Vocabulary
Universal entry(ies)
01.01.08 (19762)
ISO/IEC standard entry number
DEF

sequential series of bits comprising one character and handled as one unit [ISO/IEC 2382-16, 16.04.13]

OBS

The number of bits in a byte is fixed for a given data processing system.

OBS

The number of bits in a byte is usually 8.

OBS

A byte is often eight logical data bits, but may include error detection or correction bits.

OBS

A measure of the transmission capability of a communication channel expressed in bits. s-1 and related to channel bandwidth and signal to noise ratio by the Shannon equation : Capacity, C=B log2(1 + S/N), where B is the bandwidth and S/N the signal to noise ratio.

OBS

byte: term and definition standardized by ISO/IEC [ISO/IEC 19762-1:2008].

French

Spanish

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Record 3 - external organization data 2009-07-30

English

Subject field(s)
  • Compartment - ISO/IEC JTC 1 Information Technology Vocabulary
Universal entry(ies)
06.01.102 (19762)
ISO/IEC standard entry number
DEF

ratio of the centre frequency to the bandwidth

OBS

Q factor; quality factor: terms and definition standardized by ISO/IEC [ISO/IEC 19762-4:2008].

French

Spanish

Save record 3

Record 4 2006-01-11

English

Subject field(s)
  • Telephone Metering
  • Telecommunications Transmission
  • Remote Sensing
DEF

In analog and digital communications, signal-to-noise ratio, often written S/N or SNR, is a measure of signal strength relative to background noise[;] the ratio is usually measured in decibels (dB).

OBS

This ratio is usually in terms of peak values in the case of impulse noise and in terms of the root-mean-square values in the case of random noise.

OBS

This ratio may be a function of bandwidth of the transmission system.

OBS

signal to noise ratio; SNR: term and abbreviation officially approved by the RADARSAT-2 Terminology Approval Group (RTAG).

French

Domaine(s)
  • Téléphonométrie
  • Transmission (Télécommunications)
  • Télédétection
DEF

Pour un équipement électronique, ce rapport s'obtient en comparant le signal d'entrée avec le signal de sortie pour mesurer le niveau du bruit (signal parasite) ajouté par l'équipement.

OBS

Ce rapport s'exprime souvent en décibels (dB) ou parfois en népers (Np).

OBS

rapport signal sur bruit; rapport signal/bruit; SNR; S/B : termes et abréviations uniformisés par le Groupe de travail de la terminologie de RADARSAT-2 (GTTR).

Key term(s)
  • rapport signal bruit

Spanish

Campo(s) temático(s)
  • Telefonometría
  • Transmisión (Telecomunicaciones)
  • Teledetección
DEF

Relación entre las amplitudes de la señal deseada y del ruido en el mismo punto.

OBS

Normalmente se expresa en decibelios y da idea de la sensibilidad de un receptor de radio.

Save record 4

Record 5 2003-04-01

English

Subject field(s)
  • Semiconductors (Electronics)
  • Internet and Telematics
DEF

The ratio between the actual segment transfer time and the time it would have taken to transfer the segment at full disk bandwidth.

French

Domaine(s)
  • Semi-conducteurs (Électronique)
  • Internet et télématique
DEF

Rapport entre la quantité de charges perdues lors du transfert sur la quantité de charges initiales.

OBS

[Le dispositif de transfert de charges] C'est un dispositif dynamique car la génération de charges en volume et en surface a tendance à remplir les puits vides (0 transformés en 1). Pour cela il faut conserver les 0 pendant un temps limité [...] avant de les régénérer en bout de D.T.C. Par ailleurs, le transfert de plot à plot est incomplet et on est donc limité dans le nombre des plots utilisables (dégradation du 1 et du 0 au-delà de 500 à 1 000 plots). On parle d'inefficacité de transfert entre plots.

Spanish

Save record 5

Record 6 2003-03-12

English

Subject field(s)
  • Telecommunications Transmission
  • Radiotelephony
CONT

The signal is filtered after the correlator so that the interfering signals are reduced by the ratio of the bandwidth before and after the correlator. This signal improvement is called the processing gain and is a major factor in determining the CDMA [code division multiple access] digital cellular system capacity. Other important parameters are the... efficiency of frequency reuse, number of cell sectors, and voice duty cycle.

French

Domaine(s)
  • Transmission (Télécommunications)
  • Radiotéléphonie

Spanish

Save record 6

Record 7 2003-02-13

English

Subject field(s)
  • Information Theory
  • Computer Mathematics
  • Data Transmission
DEF

A formula that uses signal-to-noise ratio and bandwidth for determining the maximum rate of transmission.

French

Domaine(s)
  • Théorie de l'information
  • Mathématiques informatiques
  • Transmission de données

Spanish

Campo(s) temático(s)
  • Teoría de la información
  • Matemáticas para computación
  • Transmisión de datos
DEF

Expresión en la teoría de la información, que da un límite teórico a la velocidad de transmisión de los dígitos binarios con determinados anchos de banda y relación de señal a ruido.

Save record 7

Record 8 2002-09-16

English

Subject field(s)
  • Telecommunications Transmission
  • Radio Waves
DEF

In a radio communication system, in decibels, equal to ten times the common logarithm of a quantity consisting of the occupied bandwidth of the entire baseband, divided by the assigned channel bandwidth.

French

Domaine(s)
  • Transmission (Télécommunications)
  • Ondes radioélectriques

Spanish

Save record 8

Record 9 2000-06-27

English

Subject field(s)
  • Aeronautical Engineering and Maintenance
  • Aircraft Piloting and Navigation
DEF

The ratio of the average energy transmitted per channel symbol to the average noise power in a 1 Hz bandwidth, usually expressed in dB. For A-BPSK and A-QPSK, one channel symbol refers to one channel bit.

OBS

energy per symbol to noise density ratio; ES/NO: term, abbreviation and definition officially approved by the International Civil Aviation Organization (ICAO).

French

Domaine(s)
  • Aérotechnique et maintenance
  • Pilotage et navigation aérienne
DEF

Rapport entre l'énergie moyenne émise par symbole de canal et la puissance moyenne de bruit dans une bande de 1 Hz, habituellement exprimé en dB. Pour les modulations A-BPSK et A-QPSK, «symbole de canal» désigne un bit de canal.

OBS

rapport énergie par symbole/densité de bruit; ES/NO : terme, abréviation et définition uniformisés par l'Organisation de l'aviation civile internationale (OACI).

Spanish

Campo(s) temático(s)
  • Ingeniería aeronáutica y mantenimiento
  • Pilotaje y navegación aérea
DEF

Relación entre el promedio de energía transmitida por símbolo de canal y el promedio de potencia de ruido en una anchura de banda de 1 HZ, habitualmente expresada en dB. Para la A-BPSK y la A-QPSK, un símbolo de canal se refiere a un bit de canal.

OBS

relación de energía por símbolo a densidad de ruido; Es/No : término, abreviatura y definición aceptados oficialmente por la Organización de Aviación Civil Internacional (OACI).

Save record 9

Record 10 1982-06-03

English

Subject field(s)
  • Telecommunications
OBS

the ratio of the necessary bandwidth to baseband bandwidth.

French

Domaine(s)
  • Télécommunications
OBS

rapport de la largeur de bande nécessaire à la largeur de la bande de base.

Spanish

Save record 10

Record 11 1981-08-28

English

Subject field(s)
  • Radioelectricity
  • Telecommunications
OBS

Furthermore the total output IF signal was phase-shifted by 90 ° with a simple filter because the bandwidth/carrier frequency ratio is very small.

French

Domaine(s)
  • Radioélectricité
  • Télécommunications
OBS

En outre, la signal de sortie total FI est déphasé de 90 ° au moyen d'un filtre simple, en raison de la modicité du rapport largeur de bande/fréquence porteuse.

Spanish

Save record 11

Record 12 1980-11-07

English

Subject field(s)
  • Telecommunications Transmission
DEF

... the maximum usable sensitivity for specified values of :-signal-to-noise ratio;-receiver bandwidth;-degree of modulation;-source impedance(dummy antenna).

French

Domaine(s)
  • Transmission (Télécommunications)
DEF

[...] la sensibilité maximale utilisable pour des valeurs déterminées : -du rapport signal/bruit;, -de la largeur de bande, -du taux de modulation et -de l'impédance de l'antenne fictive; [...]

Spanish

Save record 12

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