A method and apparatus for time synchronization and an OFDMA receiver thereof are provided. The mobile station is signaled via a cellular data network that a call is being initiated for the mobile station. The curvature of the mirror provides the optical power necessary for proper imaging, while limiting the reflecting area of the mirror provides an aperture stop that determines the numerical aperture of the optical system. A second thin film resistor is formed on the second dielectric layer. Each trigger set may comprise a \u201ctrigger event\u201d that may allow a controller to select a specific resource set which is desired by a particular processor based on a trigger event detected by a system power manager.