We propose a simple method that, given a symbol distribution, yields upper and lower bounds on the average code length of a D-ary optimal code over that distribution. Thanks to its simplicity, the method permits deriving analytical bounds for families of parametric distributions. We demonstrate this by obtaining new bounds, much better than the existing ones, for Zipf and exponential distributi...

ABSTRACT The paper considers simple queueing systems with multiple MAP servers, where the incoming customers can be freely assigned with service unit in case of more than one available free servers. In case of a well defined service policy the analysis of such queueing systems is a standard matrix analytic procedure, but the optimal control of those queues is rather complex. We do not directly ...

This paper applies the block control method to design a decomposed finite spectrum assignment control law suitable for multivariable linear time-delay systems. A block controllable form is introduced and a non-singular transformation that reduces the system to this form is proposed. Conditions of stability of the closed-loop system are derived. Copyright © 2002 IFAC