⊕ SNR (signal power)/(noise power)

 

Noise: thermal noise

 

⊕ SIR (Signal-to-Interference)

 

(signal power)/(interference power)

 

Sometimes known as C/I (carrier-to-interference ratio)

 

Interference: signals from other simultaneous communications

⊕ SINR ( Signal-to-Interference-Plus-Noise ratio)

 

(signal power)/(interference power+noise power)

Web Page Copyright: 國立政治大學資訊科學系 連耀南 lien@cherry.cs.nccu.edu.tw  noise.htm,  Wed Jan 27 09:15:58 CST 2010