Noise in Wireless Systems Produced by Solar Radio Bursts

Astronomy and Astrophysics – Astronomy

Scientific paper

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2169 Sources Of The Solar Wind, 6954 Radio Astronomy, 7509 Corona

Scientific paper

We have carried out an investigation of 40 years of solar radio burst data in a wide range of frequencies that have been reported by observing stations aroundthe world during 1960-1999. The data were compiled by the NGDC of NOAA. This period covers three full and two partial solar cycles. We find that the number of bursts per day with amplitudes >103 solar flux units (SFU) falls as an approximate power law with increasing burst flux level for the frequency bands investigated (1-10 and 10-20 GHz). We also find that the number of eventswith peak flux >103 SFU varies, as expecterd, with the solar cycle in the bands investigated (1-2, 2-4, and 4-10 GHz). We discuss the event (>103 SFU) occurrence rate in the context of the noise levels in typical wireless communications systems. We find that there are likely to be a few solar events per year that could cause severe interference in a given cell site during solar maximum conditions. We also discuss other aspects of possible solar radio influence on wireless systems, including the potential impacts of lower flux levels of solar radio bursts on system bit error rates.

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