Design of Dynamic Offset Spatial Modulation MIMO for Low-Cost Consumer Electronics Devices

A family of offset spatial modulation (OSM) and offset space shift keying (OSSK) techniques has been proposed in (Fang et al., 2019) due to their alleviated requirements for radio frequency (RF) switching, toward an efficient design for low-cost consumer electronic (CE) devices with multiple antennas. Yet, the original structure of OSM/OSSK is based on multiple-input single-output (MISO) design, and so far there is no efficient solution to bridge such system with multiple-input multiple-output (MIMO) configuration, especially in the dynamic mode in pursuit of high transmission performance. To address this shortfall, this contribution develops dynamic OSM/OSSK (D-OSM/OSSK) in the context of MIMO configuration so as to unlock enhanced performance capabilities. Through a combination of rigorous theoretical analysis and simulations, our findings unequivocally demonstrate the superiority of D-OSM/OSSK-MIMO over its counterparts, including OSM/OSSK, spatial modulation (SM), and space shift keying (SSK), while efficiently reducing the hardware cost for user equipment (UE) of consumer electronics.