Abstract - One of the more challenging and yet unresolved issues
which is paramount to the success of ATM networks is that of congestion
control for Available Bit Rate (ABR) traffic. Unlike other ATM service
categories, ABR provides a feedback mechanism, allowing interior nodes
to dictate source rates. Previous work has demonstrated how linear control
theory can be utilized to create a stable and efficient control system
for the purposes of ATM ABR congestion control. This paper extends
our previous contribution that assumed a minimum-phase plant, an assumption
that is likely violated in practice. Presented here is a direct adaptive
controller that uses a finite impulse response (FIR) filter to approximately
invert the FIR plant. This controller is well suited for the ATM
ABR non-minimum-phase plant. Other control architectures, which motivate
the final proposed controller, are also discussed.
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