Performance Analysis of Hard-Switching Based Hybrid FSO/RF System over Turbulence Channels

The hybrid system of free space optic (FSO) and radio frequency (RF) has come forth as alternative good solution for increasing demand for high data rates in wireless communication networks. In this paper, wireless networks with hard-switching between FSO and RF link are analyzed, assuming that at a...

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Bibliographic Details
Published in:Computation 2019-06, Vol.7 (2), p.28
Main Authors: Khalid, Hira, Muhammad, Sajid Sheikh, Nistazakis, Hector E., Tombras, George S.
Format: Article
Language:English
Subjects:
Aerosols
Atmospheric turbulence
Bit error rate
Communication networks
ergodic capacity
Fading
Free Space Optics (FSO)
Gamma-Gamma distribution
Hybrid systems
Mathematical analysis
Noise
Outage Probability
Radio frequency
Rain
Random variables
Rayleigh fading
Receivers & amplifiers
Signal to noise ratio
Switching
Transmitters
Wireless communications
Wireless networks
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Summary:The hybrid system of free space optic (FSO) and radio frequency (RF) has come forth as alternative good solution for increasing demand for high data rates in wireless communication networks. In this paper, wireless networks with hard-switching between FSO and RF link are analyzed, assuming that at a certain time point either one of the two links are active, with FSO link having higher priority. As the signal-to-noise ratio (SNR) of FSO link falls below a certain selected threshold, the RF link is activated. In this work, it is assumed that the FSO link follows Gamma-Gamma fading due to the atmospheric turbulence effect whereas RF link experiences Rayleigh fading. To analyze the proposed hybrid model, analytical expressions are derived for the outage probability, bit error rate and ergodic capacity. A numerical comparison is also done between the performances of the proposed hybrid FSO/RF model and the single FSO model.
ISSN:2079-3197
2079-3197
DOI:10.3390/computation7020028