  We study a stabilization problem for systems with quantized output feedback.
The state estimate from a Luenberger observer is used for control inputs and
quantization centers. First we consider the case when only the output is
quantized and provide data-rate conditions for stabilization. We next
generalize the results to the case where both of the plant input and output are
quantized and where controllers send the quantized estimate of the plant output
to encoders as quantization centers. Finally, we present the numerical
comparison of the derived data-rate conditions with those in the earlier
studies and a time response of an inverted pendulum.
