Author : Neethu Varghese 1
Date of Publication :7th October 2015
Abstract: Infrared wireless systems plays a significant role in indoor communication. It had replaced the existing RF wireless systems. There are several challenges for the practical implementation of the optical wireless communication. For this reason, the indoor optical wireless transmission systems are not easy to design and hence new design solutions are needed to be explored. One of the challenges faced by the LED optical wireless communication is the optical noise generated by the AC-LEDs or conventional fluorescent lamps. The main objective of this work is to circumvent background optical noises using OFDM. The orthogonal subcarriers which are affected by interference can be used to send training symbols rather than sending data. Training symbols can be used for channel estimation, based on the estimated parameters equalization is performed at the receiver side. Combining FEC along with OFDM an efficient optical wireless system can be designed.
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