Radio frequency watermarking for OFDM wireless networks. - John E. Kleider; Steve Gifford; Scott Chuprun; Bruce Fette (ICASSP (5), 2004)

Preamble and embedded synchronization for RF carrier frequency-hopped OFDM. - John E. Kleider; G. Maalouli; Steve Gifford; Scott Chuprun (IEEE J. Sel. Areas Commun., 2005)