Power allocation strategies for 6G communication in VL-NOMA systems: an overview

ABSTRACT This paper discusses an overview of power allocation (PA) strategy for enabled sixth-generation (6 G) communication in visible light non-orthogonal multiple access (VL-NOMA) scenario. Light emitting diode (LED) deployed in the advancement of VL-NOMA 6 G limit-less efficiencies when complemented with radio frequency (RF)/millimeter-wave ( ), terahertz (THz), free-space optical (FSO) and VL. The encountered challenges in the currently deployed fifth generation (5 G) technology such as signal failures, low power, data loss, latency from (5 ), and loss of signal strength were solved with 6 G providing disruptive technologies, latency from ( ), massive connectivity, cell-less communications, modified machine learning algorithms, new security measures, more energy-efficient, infrastructure smart networking management, new spectrum, artificial intelligence (AI), disaggregation and virtualization supporting enough bandwidth, and increase data rate. The PA uses available power to distribute entire signals assigning power levels to multi-devices connected to VL-NOMA applications for envisioned virtual reality, unlocking all the possibilities of an indoor and outdoor transmission positioned to achieve superior accuracy, reliability and unlimited access. The 6 G 2030 roadmap positioning LED as a carrier assigning VL-NOMA PA techniques for a green solution improving high quality of services, higher data rate, reduced power consumption (using metasurface schemes), high capacity, energy efficiencies, low cost, illumination, communication and indication as detailed herein. Graphical abstract