\item Information encoded as the difference in phase with previous
symbol
\item Difference in phase noise between consecutive symbols small
- \item \SI{2}{dB} penalty at $\text{BER} = 10^{-3}$
+ \item \SI{2.5}{dB} penalty at $\text{BER} = 10^{-3}$
\end{itemize}
\end{column}
\begin{column}{0.5\textwidth}
\begin{itemize}
\item<1-> At large linewidths, Viterbi-Viterbi algorithm can
make mistakes
- \item<1-> For QPSK the phase estimate can be off by $pi/2$
+ \item<1-> For QPSK the phase estimate can be off by $\pi/2$
\item<1-> All subsequent symbols will be decoded incorrectly\\[1em]
\item<3-> Solution: Differential encoding
\end{itemize}