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Interference Characterization and Mitigation of 5.5 Mbps CCK WI-FI Signals

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5 Author(s)

An exact power spectral density (PSD) expression is derived for IEEE 802.11b 5.5 Mbps signals using complementary code keying (CCK). The analytical result obtained is verified through computer simulation. The spectral signature of the 5.5 Mbps CCK- modulated signal is compared to the PSD of the Barker-spread Wi-Fi signals. The adjacent channel interference power resulting from the 5.5 Mbps CCK interferer is introduced and compared to that caused by Barker-spread signals. Adaptive antennas with tapped delay lines are used to mitigate the effect of these interference signals. Optimal ranges of the tapped delay lines are found such that performance is restored at minimum cost.

Published in:

2007 IEEE International Symposium on Electromagnetic Compatibility

Date of Conference:

9-13 July 2007