Received Signal Strength Indication
- Received Signal Strength Indication
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En télécommunications, le Received Signal Strength Indication ou RSSI est une sortie d'un système de réception d'un signal sans fil (classiquement un signal radio). Son utilité est de fournir un signal lié à l'intensité du signal reçu. Ainsi, la sortie est en courant continu, souvent en 0/5V (ou 0/+V) (le niveau le plus élevé est 5V, le plus bas est 0V). La signification du signal est la suivante: si la tension de sortie est nulle, le récepteur ne perçoit pas de signal. Si la tension est élevée (proche de +V), le signal est maximal. Cela permet donc d'ajuster la qualité de la réception.
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