While the fifth-generation systems are being rolled out across the globe, researchers have
turned their attention to the exploration of radical next-generation solutions. At this early …

High mobility environment leads to severe Doppler effects and poses serious challenges to
the conventional physical layer based on the widely popular orthogonal frequency division …

Orthogonal time-frequency space (OTFS) is a promising technique for high mobility wireless
communications, as it approaches a sparse representation of doubly-selective fading …

Orthogonal time frequency space (OTFS) waveform based millimeter wave (mmWave) MIMO
systems are capable of achieving high data rates in high-mobility scenarios. Hence …

This paper investigates an uplink coordinated multi-point (CoMP) coverage scenario, in
which multiple mobile users are grouped for sparse code multiple access (SCMA), and …

We provide the first-ever performance evaluation of orthogonal time frequency space (OTFS)
modulation in cell-free massive multiple-input multiple-output (MIMO) systems. To …

Orthogonal time frequency space (OTFS) modulation is strongly considered as a promising
solution for high-mobility communications. In contrast to conventional modulation …

A convenient delay, Doppler and angular-(DDA) domain representation of the multiple-input
multiple-output (MIMO) wireless channel is conceived for deriving the end to end …

In orthogonal time sequency multiplexing (OTSM) modulation, the information symbols are
conveyed in the delay-sequency domain upon exploiting the inverse Walsh Hadamard …

Existing channel estimation techniques for orthogonal time frequency space (OTFS)
transmission are mostly based on the pilots embedded in the two-dimensional delay …