Centering Text within a Multirow Cell in LaTex

Question

This is probably best explained with an example. I have the following table, where the \"A\" cell spans two rows, and the \"B\" cell spans two columns.

\\begin{t         


        

Answer 1

That is could be helpful for someone

\begin{tabular}{|c c | c|c|c|}
\hline
\multicolumn{2}{|c}{\multirow{2}{*}{Modulation}} & \multicolumn{3}{|c|}{M} \\
\cline{3-5}
&  & 2  & 4 & 8 \\
\hline
   \multirow{3}*{\hfil SNR=$\begin{cases}  \\  \\  \end{cases}$}    &  STMA &  xx dB & xx dB & xx dB\\
      &  QTMA    & xx dB & xx dB & xx dB \\
      &  POSTMA & xx dB & xx dB & xx dB\\
\hline
\end{tabular}