Different diversity schemes to be used in connecting laptop computers to Wireless Local Area Networks (WLANs) are analyzed in this paper, in order to achieve the best diversity gain performance. In particular, to perform experimental investigations, two multi-band Planar Inverted F-Antennas (PIFAs) have been mounted on a notebook in different configurations, to implement spatial, polarization and pattern diversity schemes. The analysis has been carried out both in the 2.4GHz and in the 5GHz frequency bands, by resorting to a large reverberation chamber where a Rayleigh fading has been properly generated. Frequency stirring has been applied in the whole measurement campaign, while polarization stirring has been considered only for polarization diversity measurements. Power imbalance, correlation coefficients and diversity gain have been calculated from the collected samples of the signals received at the two PIFAs. The effect of the distance between the two antennas has been explicitly considered.
Performance evaluation of diversity schemes for laptop computers
NEPA, PAOLO;MANARA, GIULIANO;
2010-01-01
Abstract
Different diversity schemes to be used in connecting laptop computers to Wireless Local Area Networks (WLANs) are analyzed in this paper, in order to achieve the best diversity gain performance. In particular, to perform experimental investigations, two multi-band Planar Inverted F-Antennas (PIFAs) have been mounted on a notebook in different configurations, to implement spatial, polarization and pattern diversity schemes. The analysis has been carried out both in the 2.4GHz and in the 5GHz frequency bands, by resorting to a large reverberation chamber where a Rayleigh fading has been properly generated. Frequency stirring has been applied in the whole measurement campaign, while polarization stirring has been considered only for polarization diversity measurements. Power imbalance, correlation coefficients and diversity gain have been calculated from the collected samples of the signals received at the two PIFAs. The effect of the distance between the two antennas has been explicitly considered.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
