PROBOLA OFDM systems split the transmitted signal into multiple orthogonal sub-carriers. Devices, Circuits, and Systems. Profiles are intended to address G.hn nodes with significantly different levels of complexity. In 2008, several marketing firms promoted G.hn and made optimistic predictions. Panasonic, one of the largest manufacturers of consumer electronics, is also a contributor member of HomeGrid Forum.|Jersey, States of. Government of Jersey