3 ms·
The reason that signal strength is measured in dB in the first place is because it corresponds linearly to actual performance based on distance. It is original
by sounddust 16y ago
The reason that signal strength is measured in dB in the first place is because it corresponds linearly to actual performance based on distance. It is originally derived from the measurement of a signal needed to sustain an audible sound across X miles of telephone wire. Therefore, it's a bit disingenuous to base performance on the linear strength of the signal.
- varjag 16y agoExcept that mobile phones are wireless and are subject to inverse square law as far as signal is concerned. Signal theory traditionally operates with log scale because it simplifies math greatly and makes graphs manageable. If you say have noise floor at -30dB, expressing it on a linear graph is not very convenient.