Comparison of L-DACS & FBMC performance in over-water air-ground channels

• Accurate AG channel models important to UAS • Using FBMC, can improve total throughput & decrease out-of-band interference - FBMC´s time-frequency localized prototype filters decrease first sidelobe´s ISI, ICI, & improve system efficiency • FBMC & L-DACS1 have nearly same BER, & both are better than L-DACS2 by ∼1 dB at uncoded BER ∼10⁻⁵ • L-DACS2 requires channel equalizer, & Viterbi demodulator better than differential demodulator