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Line of sight (LoS) is a type of propagation that can only transmit and receive data if the transmitting and receiving stations are visible to one another and there is no obstruction in the way. Line-of-sight communication includes transmissions via microwave, satellite, and FM radio. The imaginary line that separates an observer from the target is known as line of sight (LOS). Line of sight is the straight line between a transmitter and a receiver, including any obstacles in the way.
High-speed communication requires a clear line of sight. An indicator on a networking device that indicates a signal or connection has been dropped or terminated is called LOS, short for loss of signal.
There are numerous causes of LOS, including the ones listed below. The network device’s cable is damaged. The other end does not have a connection. the path that connects two points; more precisely:
the straight line when the horizon is not in the way between a receiving antenna and a transmitting antenna, such as for radio or television signals. Diffraction effects that disrupt radio transmissions can be caused by the presence of objects not in the direct line of sight. A volume known as the first Fresnel zone ought to be unobstructed for the best propagation.
The Global Line-of-Sight (LoS) data link modem market accounted for $XX Billion in 2022 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2023 to 2030.
A new paradigm launch by visible light communication (VLC) has the potential to change the way wireless communication works in the future. The modulation of the visible light spectrum (400–700 nm) that is utilized for illumination is the method by which information is transmitted in VLC.
The ability of VLC to provide high-speed data communication with enhanced energy efficiency and communication security/privacy has been demonstrated through analytical and experimental research. VLC is still in the beginning stage of exploration. Few review articles have been published on this subject, most of which focus on physical layer research. In contrast to other reviews, this one provides a system perspective on VLC, a review of the existing literature, and potential obstacles to VLC implementation and integration.
Hardware that can be utilized for data transmission is readily available and the visible light spectrum does not require a license. In addition, the VLC Network’s high data rate is made possible by the exponential advancement of high power light emitting diodes. It has the potential to provide secure and private data communication at high speeds while also enhancing energy efficiency.
Standardization efforts such as IEEE 802.15.7 and the standards of the visible light communications association (VLCA) demonstrate that VLC will enhance existing wireless networks in the coming years.
VLC can be used for indoor wireless communication, intelligent transportation systems, smart cities, human sensing, localization in robots and warehouses, safe and risk-free data access in hospitals, toys and theme parks, indoor point-to-point (PPP) communication, and vehicular communication
