FAQ-How Do Signal Measurement Tools Calculate the SNR? Does a Higher SNR Value Indicate a Better Signal Quality

Publication Date:  2015-06-25 Views:  285 Downloads:  0
Issue Description
How Do Signal Measurement Tools Calculate the SNR? Does a Higher SNR Value Indicate a Better Signal Quality?
Solution
The SNR value obtained using a signal measurement tool is not the actual SNR on a network adapter. The tool obtains the SNR value by comparing the detected signal strength with a predefined noise value (-96 dBm for example). A high SNR value does not indicate a good signal quality because the high SNR may be caused by interference signals. The signal quality should be evaluated by the SNR and signal to interference ratio (SIR).

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