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About: Signal-to-interference-plus-noise ratio     Goto   Sponge   NotDistinct   Permalink

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Type: yago:Abstraction100002137yago:MagnitudeRelation113815152yago:Ratio113819207yago:Relation100031921yago:WikicatEngineeringRatios New Facet based on Instances of this Class

In information theory and telecommunication engineering, the signal-to-interference-plus-noise ratio (SINR) (also known as the signal-to-noise-plus-interference ratio (SNIR)) is a quantity used to give theoretical upper bounds on channel capacity (or the rate of information transfer) in wireless communication systems such as networks. Analogous to the signal-to-noise ratio (SNR) used often in wired communications systems, the SINR is defined as the power of a certain signal of interest divided by the sum of the interference power (from all the other interfering signals) and the power of some background noise. If the power of noise term is zero, then the SINR reduces to the signal-to-interference ratio (SIR). Conversely, zero interference reduces the SINR to the SNR, which is used less ofte