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( T o p )
1
C a r r i e r - t o - n o i s e - a n d - i n t e r f e r e n c e r a t i o ( C N I R )
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A p p e a r a n c e
F r o m W i k i p e d i a , t h e f r e e e n c y c l o p e d i a
T h i s i s a n o l d r e v i s i o n o f t h i s p a g e , a s e d i t e d b y 9 2 . 4 0 . 2 0 5 . 5 0 ( t a l k ) at 1 8 : 2 0 , 2 2 A p r i l 2 0 2 2 . T h e p r e s e n t a d d r e s s ( U R L ) i s a p e r m a n e n t l i n k t o t h i s r e v i s i o n , w h i c h m a y d i f f e r s i g n i f i c a n t l y f r o m t h e c u r r e n t r e v i s i o n .
( d i f f ) ← P r e v i o u s r e v i s i o n | L a t e s t r e v i s i o n ( d i f f ) | N e w e r r e v i s i o n → ( d i f f )
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).
Carrier-to-noise-and-interference ratio (CNIR)
The CIR ratio is studied in interference limited systems, i.e. where I dominates over N , typically in cellular radio systems and broadcasting systems where frequency channels are reused in view to achieve high level of area coverage. The C/N is studied in noise limited systems. If both situations can occur, the carrier-to-noise-and-interference ratio (CNIR or C/(N+I) ) may be studied. Said by Precious Emelogu?
See also
t
e
Noise (physics and telecommunications)
General
Noise in...
Class of noise
Engineering terms
Ratios
Related topics
Denoise methods
R e t r i e v e d f r o m " https://en.wikipedia.org/w/index.php?title=Signal-to-interference_ratio&oldid=1084130970 "
C a t e g o r i e s :
● A r t i c l e s l a c k i n g s o u r c e s f r o m J u n e 2 0 0 7
● E n g i n e e r i n g r a t i o s
● R a d i o f r e q u e n c y p r o p a g a t i o n
● R a d i o r e s o u r c e m a n a g e m e n t
● I n t e r f e r e n c e
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H i d d e n c a t e g o r i e s :
● A r t i c l e s w i t h i n v a l i d d a t e p a r a m e t e r i n t e m p l a t e
● A l l a r t i c l e s l a c k i n g s o u r c e s
● T h i s p a g e w a s l a s t e d i t e d o n 2 2 A p r i l 2 0 2 2 , a t 1 8 : 2 0 ( U T C ) .
● T h i s v e r s i o n o f t h e p a g e h a s b e e n r e v i s e d . B e s i d e s n o r m a l e d i t i n g , t h e r e a s o n f o r r e v i s i o n m a y h a v e b e e n t h a t t h i s v e r s i o n c o n t a i n s f a c t u a l i n a c c u r a c i e s , v a n d a l i s m , o r m a t e r i a l n o t c o m p a t i b l e w i t h t h e C r e a t i v e C o m m o n s A t t r i b u t i o n - S h a r e A l i k e L i c e n s e .
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