Performance Enhancement for Unipolar OFDMbased Optical Wireless Communication Systems

Document Type : Original Article

Authors

1 * Dept. of Electronics and Electrical Communications, Faculty of Engineering, Menoufia University.

2 Dept. of Electronics and Electrical Communications, Faculty of Engineering, Menoufia University.

3 Dept. of Electronics and Electrical Communications, Faculty of Engineering, Menoufia University

Abstract

Optical wireless communication (OWC) is one of the leading technologies nowadays, especially with the limited-band shortage of radio frequency communication. OWC offers high data transmission, free wide bandwidth with high data security. Data transmission within the diffused indoor OWC systems at high speed will extend the channel impulse response over other symbol periods with many reflections causing an interference called inter-symbol interference (ISI). This interference distorts the transmitted data symbols and affects the signal recovery at the receiver side. This paper studies the performance enhancement for OWC systems over a ceiling bounce channel considering a hamming error coding model for unipolar OFDMbased optical communication system with the use of equalization to mitigate and reduce the degradation effects of channel distortion and ISI for reliable and correct detection at the receiver.

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