Home Forums GENERAL Representation of BER

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• #20654
Anamika Basnotra
Participant

Hello everyone
can anyone plz tell me how can i represent BER in some other form (without exponents)
earlier i was representing it in the form of -ve log of BER
Bt since some of the BER values came 0; so they cannot be represented in -ve log form.
it is important to convert these for plotting them.

• #20657
Ashu verma
Participant

Hi Anamika ,you can find no of ways to calculate the BER .I have attache a link below
http://www.academia.edu/6225253/fiber_optic_communication_-_Govind_P._Agrawal_free_download_.pdf

May this will help you.

• #20670
Anamika Basnotra
Participant

hi, Sam Sung
the problem that i am facing is not the calculation but the representation
i have already calculated the BER; now i have to plot the graphs
for that i have to change the exponential form of BER into normal form
one of the way is to convert it into negative log
But since some of the values have come 0; so they cannot be converted.
i am asking; is there any other way in which i can represent BER in normal form (without exponents)

• #20673
Ravil
Participant

Hi Anamika,

According to its definition, bit error ration (BER) is usually represented by number or err. bits to the total number of bits transmitted. Such value can be represented either in powers of e or through log in dB. I don’t think there are any other units for BER. However, BER is directly related to OSNR, which will be non-zero value (since you’ll always have noise in your channels…) Can you use it as a substitution for BER?

• #20681
Alessandro Festa
Participant

Hi Anamika, I think you can use Q-factor (in dB) instead of BER on your plots.

• #20700
Anamika Basnotra
Participant

Hi, Ravil
even i was thiking of this substitution bt was not sure.
you cleared my doubt. thankyou

• #20755
Ravil
Participant

You are welcome, Anamika! I am glad that my suggestion helped you with your question!

• #20701
Anamika Basnotra
Participant

hi, Alessandro
I am done with plotting the graphs for Q-Factor

• #20705
Alessandro Festa
Participant

Hi Anamika, what do you mean with “I am done”? Is the solution of plotting Q-factor acceptable?

• #20707
Anamika Basnotra
Participant

i mean i have plotted the graphs for Q-Factor

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