Bits $1$ and $0$ are transmitted with equal probability. At the receiver, the pdf of the respective received
signals for both bits are as shown below.
If the detection threshold is $1,$ the $BER$ will be
- $\frac{1}{2} \\ $
- $\frac{1}{4} \\$
- $\frac{1}{8} \\$
- $\frac{1}{16}$