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We propose a new algorithm for distributed power control in cellular communication systems. We define a cost for each mobile that consists of a weighted sum of power and square of signal-to-interference ratio (SIR) error and obtain the static Nash equilibrium for the resulting costs. The algorithm requires only interference power measurements and/or SIR… (More)

In this paper, we analyze the performance of a CDMA reverse link with an up/down power control algorithm in the presence of fading. We derive a stochastic non-linear feedback control system model for the power controlled reverse link and study the power control performance based on the nonlinear model using the technique of statistical linearization. We… (More)

— While FCC proposes spectrum sharing between a legacy TV system and a cognitive radio network to increase spectrum utillization, one of the major concerns is that the interference from the cognitive radio network should not violate the QoS requirements of the primary users. In this paper, we consider the scenario where the cognitive radio network is formed… (More)

—In this paper, a stochastic uplink power control problem is considered for CDMA systems. A distributed algorithm is proposed based on stochastic linear quadratic optimal control theory assuming SIR measurements contain white noise. The proposed scheme minimize the sum of the variance of mobile's transmission power and the variance of SIR error, with… (More)

— In order to achieve high end-to-end throughput in a multihop wireless ad hoc network, TD/CDMA has been chosen as the Medium Access Control (MAC) scheme due to its support for high network throughput in a multihop environment. The associated power control and scheduling problem needs to be addressed to optimize the operations of TD/CDMA. In this paper,… (More)

— In this paper we present two new control algorithms that potentially can be used as efficient techniques for power updates in wireless CDMA communication networks. The algorithms are obtained by optimizing the signal-to-interference error. The control laws are distributed, respectively linear and bilinear, and require either estimation of the channel… (More)