Relation between Eb/No and average SNR

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mohsin455
New Member

Posts: 1

Relation between Eb/No and average SNR Nov 20, 2005 11:35:26 GMT -5

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Post by mohsin455 on Nov 20, 2005 11:35:26 GMT -5

Hi,
I am modelling a communication system with fading chanel. So i need to plot BER versus mean signal to nosie ratio(avg SNR). Now my question is what is the relation between Eb/No and average SNR when plotting BER.

Any help in this regard is highly appreciated.

Best Regards,
Mohsin.

charan langton
Administrator

Posts: 115

Relation between Eb/No and average SNR Nov 20, 2005 16:26:52 GMT -5

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Post by charan langton on Nov 20, 2005 16:26:52 GMT -5

Energy per bit is equal to Carrier power divided by bit rate.

Eb = S/R.

The noise density is total noise divided by bandwidth. So

N0 = N/B.

So Eb/N0 = (S/R)/(N/B) or = S/N + B/R in dBs. So

SNR = Eb/N0 - B/R in dBs.