WiMax PLL's FIR Filter Design Using LMIs

WiMax technology evolved greatly over the last decade. Using optimization techniques to improve the behavior of filters in phase-locked loop (PLL) in terms of overshoot and setlling time is a challenging task. This paper introduces a new PLL's loop filter design methodology that meets mobile WiMax design objectives such as small settling time, minimum overshoot and working mobile WiMax frequency range. LMI optimization based on semidefinite programmimg is used for FIR filter design to optimize conflicting objectives. The obtained results are compared with linear programming results. The LMI results outperformed results of linear programming and other comparable designs.

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