relation between BER, SNR and ISI

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preethi19

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Can anyone pls tell me the relation or difference between SNR, BER and ISI.
I know the better the BER the lower the SNR. its like they both are proportional right???
ISI is inter symbol interference. does this affect the BER or SNR???
BER occurs when one of the many bits transmitted is wrong. but wat if the bits are correct but there is a interference. So this also results in some of the bits to be changed right??? i am not sure if i am right. can someone pls help
 

hi 19,
Have you seen this pdf Ref: Sinad.?
Eric
 

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