  This paper addresses quantized output feedback stabilization under
Denial-of-Service (DoS) attacks. First, assuming that the duration and
frequency of DoS attacks are averagely bounded and that an initial bound of the
plant state is known, we propose an output encoding scheme that achieves
exponential convergence with finite data rates. Next we show that a suitable
state transformation allows us to remove the assumption on the DoS frequency.
Finally, we discuss the derivation of state bounds under DoS attacks and obtain
sufficient conditions on the bounds of DoS duration and frequency for achieving
Lyapunov stability of the closed-loop system.
