Solve Equation: ln(BER/2)=-rT?

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To solve the equation ln(BER/2) = -rT, the initial equation provided is BER = 1/2 * exp(-rT). The correct transformation leads to exp(-rT) = 2 * BER, which implies that ln(2 * BER) = -rT. The discussion also touches on the relationship between BER and noise figure (NF), with a request for assistance in developing new equations related to this topic. The participant emphasizes the importance of correctly handling the negative sign in the logarithmic transformation. The conversation highlights a need for collaboration on advanced topics in electrical engineering.
dervast
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Hi i need a little help with an equation

Ber=1/2*exp(-rT)
I want to solve it to -rT
Which of the following solutions is correct?
ln(BER/2)=-rT or
ln(BER/2)=rT
 
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Neither...

First, exp(-rT)=2*Ber

I think you can do the rest and remember to show respect to that minus sign :smile:
 
No i don't remember how to do it :(
What i know it that
exp(x)=theta
ln(theta)=x
 
2B=e^{-rT}\implies ln(2B)=-rT

If you want to go further...

aln(x)=ln(x^a) can be used
 
iam ph.d studentin electrical enginerring/USM/MALYSIA
Ihave some equestion
1-my research :new noise measurement techniques sing it error rate,iwant ask how make the relation ship betwen BER,NF LINERITY
2-CAN HELP ME FOR FIND NEW EQUATION OF BER RELATED TO NF
THANK U VERY MUCH FOR HELP ME
EKHLAS KADHUM
ekhlas_kadhum@yahoo.com
 

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