Reconfigurable intelligent surface (RIS) is a key enabler for future paradigm-shifting
communication technologies. In a cellular network, an RIS can be used to simultaneously …

The dynamic control of wireless channels is a trending field of research which has been
made possible by the advent of metamaterial-based reconfigurable intelligent surfaces …

We consider quadrature spatial modulation (QSM) schemes, which achieve high spectral
efficiency (SE) via the dispersion of a relatively small number of-ary modulated symbols over …

Novel performance analysis of the recently proposed signed quadrature spatial modulation
(SQSM) multiple-input–multiple-output (MIMO) system is presented in this paper. This study …

In this letter, a new scheme called extended space index modulation (ESIM) is proposed
and investigated. Different from previous works, both the signal constellation and index …

In this paper, novel space modulation techniques (SMT), which we called fully improved
quadrature spatial modulation (FIQSM) and fully improved quadrature space shift keying …

Differential modulation schemes are very relevant in receivers having power and processing
limitations, as these schemes dispense with the need for knowledge of channel coefficients …

Signed quadrature spatial modulation (SQSM) was recently introduced to enhance the
throughput of spatial modulation (SM) in multiple-input multiple-output (MIMO) systems. This …

Very recently, signed quadrature spatial modulation (sQSM) is developed as a competent
technique that expands the spatial constellation diagram of QSM system by adding a bipolar …

In this letter, a new schematic of spatial modulation with jointing permutation, group and
antenna indexes (JPGA-ISM) is proposed to achieve more extra information bits by …