Low-Cost Interface for Light Communication Transceivers
Natarajan Somasundaram1, Ramadass N.
With the latest advancements in wireless communication, many devices are networked leading to a drastic increase in the quantum of wireless data communicated. This leads to a growing demand for wireless bandwidth and secure channels without causing any interference and hazards. Light Communication is an emerging technique which can address the bottlenecks of existing wireless networks by providing a widest bandwidth, interference-free and secure operation. In order to implement light communication, a suitable platform satisfying the criteria of low cost and low power is desired. A light communication transceiver consists of a data source, digital light modulator and driver, light source, light sensor, digital demodulator and data storage. Digital modulator and demodulator can be implemented using any digital architecture. A two-wire interface is required, one to connect the light source, through appropriate driving circuit, to the modulator and another to connect the light sensor to the demodulator. A two wire digital interface compatible with any of the digital architectures and any of the light modulation schemes supporting standard data rates is designed and implemented.