… This data model will be the starting point of our multiband OFDM approach, which is … The
data model (1) is the starting point of our multiband OFDM approach. For ease of presentation, …

… To reduce this complexity we consider a multiband OFDM approach, where the available …
, each of which is modulated by OFDM. • We aim at covert communications and thus we rely on …

… Tables I–III compare the MCSS performance with that of a DSSS [1] scheme employing
turbo equalization and a multiband OFDM scheme [2]. A comparison with the chirp-based …

… -division multiplexing (OFDM) techniques for underwater channels. In OFDM, the entire …
With controlled overlapping among the sub-carriers, OFDM schemes do not utilize guard …

… multiband orthogonal frequency-division multiplexing (OFDM)… Covert acoustic communication
has been achieved between … Here, covertness is defined as the property of communication …

… covert communication at a low SNR. In some studies [5][6], OFDM and spectrum spreading
… Covert underwater communications with multiband OFDM. OCEANS 2008, IEEE, Quebec …

… In other words, the multiband communication technology overcomes various underwater …
in underwater acoustic communication environment. Therefore, this paper presented multiband …

… the application of OFDM modulation to multiuser underwater acoustic communications.
Should the signals from multiple users be synchronized at the receiver on the OFDM block level, …

… This work focused on the design of the covert communication scheme. To apply this scheme
in underwater acoustic environments, we must consider … Multiband OFDM for covert acoustic …

… transmitted platform being detected by energy detector, a burst hybrid spread spectrum
scheme which transmits extremely short signal for covert underwater acoustic communication is …