Dynamic Underwater Acoustic Channel Tracking for Correlated Rapidly Time-Varying Channels

Tracking of Rapidly Time-Varying Sparse Underwater Acoustic Communication Channels

Sub-space Channel Tracking for Correlated Underwater Acoustic Communication Channels

Many underwater acoustic channels exhibit correlated (semideterministic) multipath arrivals. Such channels are often timevarying with extensive multipath delay and yet have a limited number of degrees of freedom due to inter-path correlation. Traditional channel estimation algorithms do not exploit this correlation structure. To exploit cross-tap correlation, the channel impulse response is pro...

Characterization of Long-Range Time-Varying Underwater Acoustic Communication Channels

Reliable Communications over Rapidly Time-Varying Channels

1 Faculty of Electrical Engineering, Mathematics, and Computer Science, Delft University of Technology, Mekelweg 4, 2628CD Delft, The Netherlands 2Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN 55455, USA 3Philips Research, 5656 AA Eindhoven, The Netherlands 4 School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, GA...

Optimal time-frequency signaling for rapidly time-varying channels

We introduce a new signaling scheme for timeand frequencyselective channels that is a generalization of Multi-Carrier Code Division Multiple Access (MC-CDMA) signaling used in slowly time-varying channels. The Fourier basis functions used in conventional MC-CDMA systems encounter temporal distortion in rapidly time-varying channels resulting in degraded performance. The proposed scheme transmit...