Analytical Characterization of the Operational Diversity Order in Fading Channels
<|reference_start|>Analytical Characterization of the Operational Diversity Order in Fading Channels: 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 dominant line-of-sight scenarios an increased diversity order is attainable compared to that achieved asymptotically, even in the single-antenna case; (ii) this effect is attenuated, but still visible, in the presence of an additional dominant specular component; (iii) the decay slope in Rayleigh product channels increases very slowly, never fully achieving unitary slope for a finite SNR.<|reference_end|>
@article{fernández2024analytical,
    title={Analytical Characterization of the Operational Diversity Order in Fading
  Channels},
    author={Santiago Fern'andez, J. Alfonso Bail'on-Mart'inez, Juan E.
  Galeote-Cazorla, and F. Javier L'opez-Mart'inez},
    journal={arXiv preprint arXiv:2405.09336},
    year={2024},
    archivePrefix={arXiv},
    eprint={2405.09336},
    primaryClass={cs.IT eess.SP math.IT}
}