Performance evaluation of diversity schemes for laptop computers

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Performance evaluation of diversity schemes for laptop computers

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© The Institution of Engineering and Technology
Published

Different diversity schemes to be used in connecting laptop computers to wireless local area networks are analysed, 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, polarisation and pattern diversity schemes. The analysis has been carried out both in the 2.4 and 5 GHz 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, whereas polarisation stirring has been considered only for polarisation 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.

Inspec keywords: planar inverted-F antennas; laptop computers; multifrequency antennas; Rayleigh channels; wireless LAN; diversity reception; reverberation chambers

Other keywords: wireless local area networks; Rayleigh fading; frequency 2.4 GHz; multiband planar inverted F-antennas; frequency 5 GHz; polarisation diversity measurements; diversity scheme performance evaluation; correlation coefficients; diversity gain; laptop computers; polarisation stirring; reverberation chamber; frequency stirring; pattern diversity schemes

Subjects: Microcomputers; Radio links and equipment; Single antennas; Computer communications; Local area networks

References

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