Radio on visible light (RoVL): Exploring methods and techniques for mobile telephony through visible light channels

One of the distinctive relevance of RF technology is in mobile telephony signal transmission. This primitive inception of cell phone technology has transformed the perception of communication, in furnishing easy & instant connectivity to majority of human population. The RF technology, categorically availed in mobile phones applications, comes with some deficiency in terms of security, regional coverage and power consumption. It is affirmed, that due to signal degradation, the cell phone connectivity deep inside buildings is often difficult or poor. In parallel to the varied apparent factors impinging cell phone connectivity, the grand battery power consumed for call connectivity could also be an added reason for poor signal coverage deep inside buildings. It is often noticed that, besides the issue of regional coverage, there is also the concern of security risk with its apparent vulnerability for unauthorised RF interception. In parallel, it is faced with the delimited application in RF restricted sections of hospitals, scientific/research labs and military centres, due to its susceptibility for interference with other radio equipment. Although, considerable contributions have been made in terms of favourable applications by optical wireless systems, with its innovative extension into visible light spectrum, there still remain some unexplored areas in terms of its pertinence for cellular applications.