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\section{Rate Adaptation for Multiuser Networks with Limited Feedback}  Rate adaptation for a single-user MISO networks can be implemented as follows:  \begin{enumerate}  \item Offline-designed quantizers for the transmitter's rate and transmit beamforming vectors are known at the transmitter's and receiver's sides, denoted by $\mathcal{Q}_{R}$ and $\mathcal{C}_{b}$. $\mathcal{Q}_{b}$.  \item The receiver obtains the channel vector ${\pmb h}$, picks the appropriate rate and transmit beamforming vector from $\mathcal{C}_R$ and $\mathcal{C}_b$ and sends their indices to the transmitter.  \end{enumerate}