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- Darren M.Dawson, Jun Hu, +6 authors Chaouki T.Abdallah
- 2007

- Sarah Koskie, Zoran Gajic
- IEEE/ACM Transactions on Networking
- 2005

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)

- Lei Song, Narayan B. Mandayam, Zoran Gajic
- IEEE Journal on Selected Areas in Communications
- 2001

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)

- Siamak Sorooshyari, Zoran Gajic
- IEEE Trans. Wireless Communications
- 2008

- Lijun Qian, Zoran Gajic
- IEEE Trans. Wireless Communications
- 2002

—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)

- Zoran Gajic
- 2003

A continuous signal is a mathematical function of an independent variable , where represents a set of real numbers. It is required that signals are uniquely defined in except for a finite number of points. For example, the function does not qualify for a signal even for since the square root of has two values for any non negative. A continuous signal is… (More)

- Thang Nguyen-Tien, Zoran Gajic
- IEEE Trans. Automat. Contr.
- 2010

- Xuemin Shen, Zoran Gajic
- Automatica
- 1990

- Zijad Aganovic, Zoran Gajic, Xuemin Shen
- Automatica
- 1996

The algebraic regulator and filter Riccati equations of weakly coupled dticrere-rime stochastic linear control systems are completely and exactly decomposed into reduced-order continuous-time algebraic Riccati equations corresponding to the subsystems. That is, the exact solution of the global discrete algebraic Riccati equation is found in terms of the… (More)

- Lijun Qian, Xiangfang Li, John Attia, Zoran Gajic
- 2007 15th IEEE Workshop on Local & Metropolitan…
- 2007

While FCC proposes spectrum sharing between a legacy TV system and a cognitive radio network to increase spectrum utilization, 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 by… (More)