Improved Aggregated Rate for Optical Orthogonal Frequency Division Multiplexing (IARO-OFDM) for Intensity Modulated and Direct Detection of VLC Deployment over 6G Networks

Visible light communications (VLC) are gaining an important role in 6G network deployment scenarios. Although 6G networks are planned to deliver incredibly high throughput and fulfill new applications, present frequency bands may be insufficient. Furthermore, 6G will provide improved coverage by merging terrestrial networks with underwater, air, and space networks. So VLC is used instead of the standard wireless communications which is incapable of providing such high-data rates for the non-terrestrial networks. VLC is a power-efficient and safe wireless communication system that operates in the visible light spectrum. In addition, VLC overcomes RF communication bandwidth limitations. In this paper, the overall aggregated throughput, data rate, power, and spectrum-efficiency in VLC systems will be improved by promoting a novel unipolar system titled improved aggregated rate for optical orthogonal frequency division multiplexing (IARO-OFDM). Moreover, introducing the precoding peak to average power ratio (PAPR) reduction technique to get a power efficient system and enhance the VLC system performance. Also, the authors provide a mathematical description and evaluation for the proposed IARO-OFDM system, in addition to comparing the proposed one with other current approaches which demonstrate that IARO-OFDM has a high data rate ratio (43.75%) with an acceptable system bit error rate system performance compared to other existing schemes.