Orthogonal Frequency Division Multiplexing (OFDM) has been the waveform of choice for
most wireless communications systems in the past 25 years. This book addresses the “what …

The evolution of global mobile data over the past decades in broadcasting, Internet of
Things (IoT), education, healthcare, commerce, and energy has put strong pressure on …

This paper proposes orthogonal time sequency multiplexing (OTSM), a novel single carrier
modulation scheme that places information symbols in the delay-sequency domain followed …

Emerging communication technologies, such as 5G and beyond, have introduced diverse
requirements that demand high performance and energy efficiency at all levels …

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

Recently, orthogonal time sequency multiplexing (OTSM) waveform was proposed using
Walsh Hadamard transform (WHT) for doubly-dispersive channels at a lower modulation …

In the high-mobility scenarios of next-generation wireless communication systems (beyond
5G/6G), the performance of orthogonal frequency division multiplexing (OFDM) deteriorates …

This paper presents unitary-precoded single-carrier (USC) modulation as a family of
waveforms based on multiplexing the information symbols on time domain unitary basis …

In this paper, we develop a multiple access (MA) mechanism where users transmit
upsampled and circularly shifted orthogonal frequency division multiplexing (OFDM) signals …

In this letter, inspired by the fundamental thoughts of sequency index modulation (SeIM) and
orthogonal time sequency multiplexing (OTSM), a novel technique is introduced for green …