Efficient Adaptive Equalization for Wireless Optical Communication Systems | ||||
| Menoufia Journal of Electronic Engineering Research | ||||
| Article 62, Volume 28, ICEEM2019-Special Issue, 2019, Page 224-231 | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/mjeer.2019.77028 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| Randa S. Hammad1; El_Sayed M. El_Rabaie2; Fathi. E. Abd-El-Samie2; Ibrahim M. El-Dokany2 | ||||
| 1Communication Department Faculty of Electronic Engineering El-Menoufia University El-Menoufia, Egypt | ||||
| 2Communication Department Faculty of Electronic Engineering El-Menoufia University El-Menoufia, Egypt. | ||||
| Abstract | ||||
| Optical Wireless Communication (OWC) system is used in many applications to transmit and receive light waves via free space. It is a perfect solution when it is difficult to use optical fibers system due to its cost or constructing difficulty. On the other hand, FSO systems suffer from the physical impairments in free space channel such as clouds, fog, snow and rain that may degrade the transmission quality. This paper presents an efficient adaptive equalization scheme for OWC systems to mitigate the effect of ISI due to atmospheric impairments. It is based on using the Recursive Least Squares (RLS) equalizer with Activity Detection Guidance (ADG) and Tap Decoupling (TD). The simulation results prove that the proposed scheme gives a very good performance to mitigate the problem of ISI in OWC systems. In addition, the results prove that the RLS algorithm has a fast convergence rate, which recommends it for nonstationary channel models (wireless communication environments). | ||||
| Keywords | ||||
| Free Space Optics (FSO); Optical Wireless Communication (OWC); Adaptive Equalizer; Recursive Least Squares. (RLS) Equalizer; ADG (Activity Detection Guidance); TD (Tap Decoupling) | ||||
| References | ||||
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