Abstract
This work investigates the performance of various receiver diversity combining techniques in mitigating the rain induced impairments experienced by optical wireless communication (OWC) links under tropical rainfall. An on-off keying (OOK) modulated 10 Mb/s optical signal is used to study rain specific attenuation (RSA) using laboratory testbed with controlled rainfall intensity up to 250 mm/hr. Various combining techniques at the receiver i.e. selection combining (SelC), equal gain combining (EGC) and maximum ratio combining (MRC) are employed to observe diversity improvement. Significant compensation of rain induced impairments in a 1 × 2 single input multiple output (SIMO) link is observed when compared to conventional single input single output (SISO) link. The outage probability and signal to noise ratio (SNR) based comparative is evaluated at varying rain conditions which show MRC to be superior diversity technique followed by EGC and SelC.
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Soni, G.G. (2020). Outage and SNR Performance of Tropical Optical Wireless Links Using Receiver Diversity. In: Gupta, S., Sarvaiya, J. (eds) Emerging Technology Trends in Electronics, Communication and Networking. ET2ECN 2020. Communications in Computer and Information Science, vol 1214. Springer, Singapore. https://doi.org/10.1007/978-981-15-7219-7_10
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DOI: https://doi.org/10.1007/978-981-15-7219-7_10
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