liquid comes packaged with two basic framing structures: frame64 and flexframe which can be used with little modification to transmit data over a wireless link.

http://liquidsdr.org/doc/flexframe/

The ofdmflexframe family of objects (generator and synchronizer) realize a simple way to load data onto an OFDM physical layer system. OFDM has several benefits over traditional "narrowband" communications systems such as the flexframe objects ( section-framing-frames ).

http://liquidsdr.org/doc/ofdmflexframe/