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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

On Shadowing the kappa-mu Fading Model

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Simmons, Nidhi [1] ; Nogueira Da Silva, Carlos Rafael [2] ; Cotton, Simon L. [1] ; Sofotasios, Paschalis C. [3, 4] ; Yoo, Seong Ki [5] ; Yacoub, Michel Daoud [6]
Total Authors: 6
[1] Queens Univ Belfast, Inst Elect Commun & Informat Technol, Belfast BT3 9DT, Antrim - North Ireland
[2] Univ Fed Triangulo Mineiro, Dept Elect Engn, BR-38064200 Uberaba, MG - Brazil
[3] Khalifa Univ Sci & Technol, Dept Elect Engn & Comp Sci, Abu Dhabi 127788 - U Arab Emirates
[4] Tampere Univ, Dept Elect Engn, FI-33101 Tampere - Finland
[5] Coventry Univ, Sch Comp Elect & Math, Coventry CV1 5FB, W Midlands - England
[6] Univ Estadual Campinas, Sch Elect & Comp Engn, Wireless Technol Lab, BR-13083970 Campinas, SP - Brazil
Total Affiliations: 6
Document type: Journal article
Source: IEEE ACCESS; v. 8, p. 120513-120536, 2020.
Web of Science Citations: 0

In this paper, we extensively investigate the way in which kappa-mu fading channels can be impacted by shadowing. Following from this, a family of shadowed kappa-mu fading models are introduced and classified according to whether the underlying kappa-mu fading undergoes single or double shadowing. In total, we discuss three types of single shadowed kappa-mu model (denoted Type I to Type III) and three types of double shadowed kappa-mu model (denoted Type I to Type III). The taxonomy of the single shadowed Type I - III models is dependent upon whether the fading model assumes that the dominant component, the scattered waves, or both experience shadowing. Although the physical definition of the examined models make no predetermination of the statistics of the shadowing process, for illustrative purposes, two example cases are provided for each type of single shadowed model by assuming that the shadowing is influenced by either a Nakagami-m random variable (RV) or an inverse Nakagami-m RV. It is worth noting that these RVs have been shown to provide an adequate characterization of shadowing in numerous communication scenarios of practical interest. The categorization of the double shadowed Type I - III models is dependent upon whether a) the envelope experiences shadowing of the dominant component, which is preceded (or succeeded) by a secondary round of (multiplicative) shadowing, or b) the dominant and scattered contributions are fluctuated by two independent shadowing processes, or c) the scattered waves of the envelope are subject to shadowing, which is also preceded (or succeeded) by a secondary round of multiplicative shadowing. Similar to the single shadowed models, we provide two example cases for each type of double shadowed model by assuming that the shadowing phenomena are shaped by a Nakagami-m RV, an inverse Nakagami-m RV or their mixture. It is worth highlighting that the double shadowed kappa-mu models offer remarkable flexibility as they include the kappa-mu, eta-mu, and the various types of single shadowed kappa-mu distribution as special cases. This property renders them particularly useful for the effective characterization and modeling of the diverse composite fading conditions encountered in communication scenarios in many emerging wireless applications. (AU)

FAPESP's process: 19/18990-3 - Line of sight probability in millimetre wave systems
Grantee:Carlos Rafael Nogueira da Silva
Support Opportunities: Scholarships abroad - Research Internship - Post-doctor