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In this paper a newly developed hybrid model, composed of a
site-specific model and a statistical model is proposed to
investigate space diversity in indoor environments. The
latter model is used to describe the field scattered by
rough surface boundaries and randomly positioned scatters.
By comparing the predicted spatial correlation with the measured
one 2.44-GHZ , it is shown that the hybrid model has a
better prediction accuracy. It is found that environment
with heavier cluster introduces stronger scattered fields
and leads to a lesser spatial correlation and to a better
space diversity performance. The correlation of the horizontal
space diversity is weaker than that of the vertical space
diversity and the former diversity has a larger diversity gain.
Good diversity gains can be obtained with antenna spacing
greater than or equal to one wavelength.
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