What does "tap" in content of Channel mean?

[mazdaspring]

what does tapping me mean?

The channel is flat fading - In simple terms, it means that the multipath channel has only one tap.



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From Above statement, could anyone please clarify me what "tap" mean for me. Please explain to me.

Thank you

 

[Communications_Engineer]

channel taps frequency response

'tap' refers to each 'element' we give in a sequence representing an FIR filter that represents a radio channel. (I hope you know that we can represent FIR impulse/frequency response to match of a channel). Since in Flat fading we only have attenuation (constant attenuation, actually), single tap FIR suffices, maybe the tap is -1 denoting some loss to the signal that passes through it

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