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A Comprehensive Survey of Channel Estimation Techniques for OTFS in 6G and Beyond Wireless Networks
Emir Aslandogan, Haci Ilhan, Burak Ahmet Ozden +5
Orthogonal time-frequency space (OTFS) modulation has emerged as a powerful wireless communication technology that is specifically designed to address the challenges of high-mobili…
Wavenumber-Division Multiplexing in Holographic MIMO with NLoS Channels
Ashutosh Prajapati, Prathapasinghe Dharmawansa, Marco Di Renzo +1
Wavenumber-division multiplexing (WDM) was introduced as a counterpart of orthogonal frequency-division multiplexing in the spatial-frequency domain for line-of-sight holographic m…
Optimal transmit field distribution for partially obstructed continuous radiating surfaces in near-field communication systems
Francesco Verde, Donatella Darsena, Marco Di Renzo +1
This paper deals with the optimal synthesis of aperture fields for (radiating) near-field communications in obstructed environments. A physically consistent model based on knife-ed…
A Survey of OTFS-Based Index Modulation Techniques: Challenges, Benefits, and Future Directions for 6G and Beyond
Burak Ahmet Ozden, Erdogan Aydin, Emir Aslandogan +5
Orthogonal time frequency space (OTFS) is a two-dimensional modulation technique that uses the delay-Doppler (DD) domain and is a candidate for providing robust, high-capacity wire…
Realistic Evaluation of Impedance-Based RIS Modeling: Practical Insights and Applications
Ayane Lebeta Goshu, Placido Mursia, Vincenzo Sciancalepore +2
Reconfigurable Intelligent Surfaces (RISs) have emerged as a promising technology for next-generation wireless communications, offering energy-efficient control of electromagnetic…
A New OTFS-Based Index Modulation System for 6G and Beyond: OTFS-Based Code Index Modulation
Burak Ahmet Ozden, Erdogan Aydin, Emir Aslandogan +4
This paper proposes the orthogonal time frequency space-based code index modulation (OTFS-CIM) scheme, a novel wireless communication system that combines OTFS modulation, which en…
Opportunistic Subarray Grouping for RIS-Aided Massive Random Access in Cellular Connectivity
Yizhu Wang, Zhou Zhang, Saman Atapattu +1
In Reconfigurable Intelligent Surfaces (RIS), reflective elements (REs) are typically configured as a single array, but as RE numbers increase, this approach incurs high overhead f…