An inkjet printer includes a plurality of fixed printheads and a transfer roller. A digital pre-distortion compensation module, having real and imaginary signal paths, receives and processes real and imaginary signal components used to generate the wireless communication signal. A frequency of occurrence is calculated for each item of the respective segments, and those nodes of the data structure associated with items that do not meet a minimum frequency of occurrence threshold are removed. The control ring is mounted on the driving element to control the tooth block to move along the bottom of the open groove. The thruster cover support structure may be a bracket, ring or flange fixedly attached with the pontoon. The wearable sensor may include a timing mechanism; a plurality of sensor pairs coupled to the timing mechanism wherein each sensor pair comprises an emitter and a detector; and a microcontroller coupled in communication to the timing mechanism and the plurality of sensor pairs.