A quick release garment such as a vest including a quick release system for easy removal by a wearer in an emergency situation wherein activation of the quick release system releases the vest from one side only disconnecting one shoulder strap, at least one belt end portion and at least one cummerbund end portion, if a cummerbund is present. An HPA MODEL unit models the characteristic of HPA using the output signal of the predistorter and an error signal obtained by subtracting a feedback signal from the output of the ISI Replica so that the error signal approaches zero. The reticle may have a plurality of features with dimensions extending in a first and a second direction and being asymmetric in the first direction. The method further includes securing the hub to prevent rotation of the hub. The method includes receiving measurement information including a measurement interval for the deactivated cell, from a base station, acquiring a measurement period using the measurement interval, measuring the signal of the deactivated cell, and generating a filtered measurement result based on the measurement period.