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frequency selective channels

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What is a frequency selective channel in lame man language?

and is the power line environment a frequency selective environment (channel)?

thanks
 

if the channel behaviour is different for selected frequencies i.e it enhances certain frequency and attenuates other, it is referred to as a freq.selective channel.
in a lay man language the dips in the channel response at some frequencies will cause it to be frequency selective.
 
many thanks.. do u by any chnce know if the power line channels are classified as freq selective channels?
thanks
 

I think so.

There is a capacitance in electric cables such that they distort signals at high frequencies. So yeah I think they are frequency selective.
 

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