Analytical Characterization of the Operational Diversity Order in Fading Channels
arxiv(2024)
摘要
We introduce and characterize the operational diversity order (ODO) in fading
channels, as a proxy to the classical notion of diversity order at any
arbitrary operational signal-to-noise ratio (SNR). Thanks to this definition,
relevant insights are brought up in a number of cases: (i) We quantify that in
line-of-sight scenarios an increased diversity order is attainable compared to
that achieved asymptotically; (ii) this effect is attenuated, but still
visible, in the presence of an additional dominant specular component; (iii) we
confirm that the decay slope in Rayleigh product channels increases very slowly
and never fully achieves unitary slope for finite values of SNR.
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