GATE ECE 1992 | Question 1.33

Question

The bit stream $01001$ is differentially encoded using $\text{'Delay and Ex OR'}$ scheme for $\text{DPSK}$ transmission. Assuming the reference bit as a $'1'$ and assigning phases of  $'0'$ and $\pi$ for $1$’s and $0$’s respectively, in the encoded sequence, the transmitted phase sequence becomes

• A. $\pi 0 \pi \pi 0$
• B. $0 \pi \pi 00$
• C. $0 \pi \pi \pi 0$
• D. $\pi \pi 0 \pi \pi$