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BER and SNR Comparisons for 8, 16 and 64 QAM Modulation Schemes through Rain Affected air Interface Channel

International Journal of Electrical and Electronics Engineering
© 2017 by SSRG - IJEEE Journal
Volume 4 Issue 6
Year of Publication : 2017
Authors : Akingbade Kayodde, F, AloOpeyemi, O
10.14445/23488379/IJEEE-V4I6P102
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How to Cite?

Akingbade Kayodde, F, AloOpeyemi, O, "BER and SNR Comparisons for 8, 16 and 64 QAM Modulation Schemes through Rain Affected air Interface Channel," SSRG International Journal of Electrical and Electronics Engineering, vol. 4,  no. 6, pp. 1-8, 2017. Crossref, https://doi.org/10.14445/23488379/IJEEE-V4I6P102

Abstract:

One major drawback of the use of satellite communications is that, at frequencies above 10 GHz (that is, the K-bands and above), some atmospheric disturbances such as rain, snow, and beam spread, greatly affect the quality of the transmitted signals. A number of approaches have been proposed to combat this drawback, some of which include the use of site diversity, reconfigurable antenna pattern, frequency diversity, terrestrial backup and power control. However, these approaches have inherent limitations in terms of resources. This paper centers on the BER performances of 8-QAM, 16-QAM and 64-QAM under rain condition. The result shows significant improvement in the data transmission by selectively adapting to the channel conditions under various rain fade profiles.

Keywords:

QAM modulation, quadrature, attenuation, Bit error rate (BER), signal to nose ratio (SNR).

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