Meeting IMT-2030 Performance Targets: The Potential of OTFDM Waveform and Structural MIMO Technologies

This paper presents a range of candidate technologies that could potentially meet the demanding requirements set by IMT-2030. Among these, two of the key technologies are explored in detail: Orthogonal Time Frequency Division Multiplexing (OTFDM) waveform and Structural MIMO (SMIMO). OTFDM is proposed as a candidate for 6 G mobile communication, addressing the limitations of traditional OFDM waveform. It enables simultaneous transmission of reference signals (RS) and data with low peak-to-average-power ratio (PAPR), high power efficiency, and reduced overhead. The benefits, technical details, simulation results, and potential applications of OTFDM are discussed. S MIMO is introduced as a revolutionary approach to enhance network capacity by implementing highly directional beams and structural arrangements of multiple antenna panels, enabling 360-degree coverage in both azimuth and elevation. This technology addresses the shortcomings of conventional $5 G$ MIMO systems and offers significant capacity improvements. Experimental results and various structural arrangements are discussed in this paper. The integration of OTFDM and S-MIMO technologies demonstrates the potential to meet the diverse requirements of future wireless networks, including ultra-low latency, improved energy efficiency, and robust support for high mobility and high data rates.