Your browser does not support JavaScript!

Performance evaluation of decode-and-forward dual-hop asymmetric radio frequency-free space optical communication system

Performance evaluation of decode-and-forward dual-hop asymmetric radio frequency-free space optical communication system

For access to this article, please select a purchase option:

Buy article PDF
(plus tax if applicable)
Buy Knowledge Pack
10 articles for $120.00
(plus taxes if applicable)

IET members benefit from discounts to all IET publications and free access to E&T Magazine. If you are an IET member, log in to your account and the discounts will automatically be applied.

Learn more about IET membership 

Recommend Title Publication to library

You must fill out fields marked with: *

Librarian details
Your details
Why are you recommending this title?
Select reason:
IET Optoelectronics — Recommend this title to your library

Thank you

Your recommendation has been sent to your librarian.

In this study, the error performance and the capacity analysis is performed for the decode-and-forward based dual-hop asymmetric radio frequency-free space optical communication (RF-FSO) system. The RF link is characterised by Nakagami-m fading and the FSO link is characterised by path loss, Gamma–Gamma distributed turbulence and pointing error. For this mixed RF-FSO cooperative system, novel closed-form mathematical expressions are derived for cumulative distribution function, probability density function and moment generating function of the equivalent signal-to-noise ratio in terms of Meijer-G function. Using these channel statistics, new finite power series based analytical expressions are obtained for the outage probability, the average bit error rate for various binary and M-ary modulation techniques and the average channel capacity of the considered system in terms of Meijer-G function. As a special case, the analytical framework can also be obtained for channel statistics and performance metrics of dual-hop mixed Rayleigh–Gamma–Gamma system. Simulation results validate the proposed mathematical analysis. The effects of fading, turbulence and pointing error are studied on the outage probability, average bit error rate and channel capacity of the asymmetric RF-FSO system.


    1. 1)
    2. 2)
      • 19. Prudnikov, A.P., Brychkov, Y.A., Marichev, O.I.: ‘Integrals and Series’ (Gordon and Breach Science Publishers, New York, USA, 1990).
    3. 3)
    4. 4)
    5. 5)
    6. 6)
      • 22. Luke, Y.L.: ‘The special functions and their approximation’ (Academic Press, New York, 1969, 1st edn.).
    7. 7)
    8. 8)
    9. 9)
    10. 10)
    11. 11)
    12. 12)
    13. 13)
    14. 14)
    15. 15)
    16. 16)
    17. 17)
    18. 18)
      • 27. Proakis, J.G., Salehi, M.: ‘Digital communications’ (Mc Graw Hill Higher Educations, 2007, 5th edn.).
    19. 19)
      • 2. Andrews, L., Phillips, R., Hopen, C.: ‘Laser beam scintillation with applications’ (SPIE Press, New York, USA, 2001).
    20. 20)
    21. 21)
    22. 22)
    23. 23)
      • 4. Moradi, H., Falahpour, M., Refai, H., et al: ‘On the Capacity of hybrid FSO/RF links’. Proc. IEEE GLOBECOM, Miami, FL, December 2010, pp. 15.
    24. 24)
    25. 25)
      • 21. Papoulis, A., Pillai, S.U.: ‘Probability, Random variables and stochastic Processes’ (Tata Mcgraw-Hill, 2002, 4th edn.).
    26. 26)
      • 10. Anees, S., Bhatnagar, M.R.: ‘On the capacity of decode-and-forward dual-hop free space optical communication systems’. Proc. IEEE Wireless Communication and Network Conf. (WCNC), 6–9 April 2014, pp. 1823.
    27. 27)

Related content

This is a required field
Please enter a valid email address