16 research outputs found

    DESIGN FORMULAS FOR PI CONTROLLERS

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    A simple derivation is given for PI Controller parameters for first-order plus delay processes. Analytical solutions are given for the controller parameters for the limiting values of tau1/tau(d) and tau2/tau(d) for second-order plus delay processes

    Decentralized dynamic nonlinear controllers to minimize transmit power in cellular networks, Part I

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    We consider the problem of synthesizing decentralized transmit power control for finite-gain stable cellular code division multiple access (CDMA) networks subject to saturation constraints on the mobile transmit powers. We show that the passivity theorem and an extension of the Zames-Falb multipliers can be used to synthesize the required distributed decentralized nonlinear dynamic controllers, to be implemented at the base station and at the mobile users, including a multi-input-multi-output (MIMO) anti-windup controller that can be implemented on the mobile hand-sets.
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