Mobility, Path Loss, and Composite Fading: Performance of a Conventional and of a Non-Conventional System with a Robust Autoencoder

• Published in: IEEE transactions on vehicular technology Vol. 72; no. 12; pp. 1 - 6
• Main Authors: Pereira, Pedro M. R., Bairros, Thiago A. M. de, Souza, Rausley A. A. de, Yacoub, Michel D.
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.12.2023; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Analytical models; Artificial neural networks; autoencoder; Channel capacity; Closed form solutions; deep neural networks; Distribution functions; Error analysis; Exact solutions; Fading; Fading channels; Formulations; Mathematical analysis; Mathematical models; Mobility management; mobility user; outage probability; path-loss; Probability density functions; random waypoint model; Shadow mapping; Shadowing; symbol error probability; System performance; Topology; Wireless communication
• ISSN: 0018-9545; 1939-9359
• DOI: 10.1109/TVT.2023.3294756

The aim of this correspondence is two-fold: (i) to assess the performance of a conventional wireless system jointly subject to short-term fading (<inline-formula><tex-math notation="LaTeX">\bm {\alpha }</tex-math></inline-formula>-<inline-formula><tex-math notation="LaTeX">\bm {\mu }</tex-math></inline-formula> model), long-term fading (Gamma model), path loss (power-law decay), and mobility (random waypoint model) through analytical formulations; and (ii) to assess the performance of a non-conventional wireless system subject to the same conditions as before but with the transmission-medium-receiving chain replaced by an autoencoder using deep neural networks. The paper derives novel closed-form expressions for the probability density function, cumulative distribution function, and moment-generating function of the received signal. The performance analysis under investigation concerns outage probability, symbol error probability, asymptotic analyses, and channel capacity, all in closed-form formulations. In addition to showing that mobility has a beneficial effect on the overall mean performance, this work also illustrates that the said unconventional system may achieve as good a performance of the conventional one.