A Simple Method for the Performance Analysis of Fluid Antenna Systems under Correlated Nakagami-m Fading
Vega-Sánchez, José David; Urquiza-Aguiar, Luis; Paredes, Martha Cecilia Paredes; Osorio, Diana Pamela Moya (2023-11-03)
IEEE
03.11.2023
J. D. Vega-Sánchez, L. Urquiza-Aguiar, M. C. P. Paredes and D. P. M. Osorio, "A Simple Method for the Performance Analysis of Fluid Antenna Systems Under Correlated Nakagami-m Fading," in IEEE Wireless Communications Letters, vol. 13, no. 2, pp. 377-381, Feb. 2024, doi: 10.1109/LWC.2023.3329794
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© 2023 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists,or reuse of any copyrighted component of this work in other works.
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Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:oulu-202403152243
https://urn.fi/URN:NBN:fi:oulu-202403152243
Tiivistelmä
Abstract
By recognizing the tremendous flexibility of the emerging fluid antenna system (FAS), which allows dynamic reconfigurability of the location of the antenna within a given space, this letter investigates the performance of a single-antenna FAS over spatially correlated Nakagami- m fading channels. Specifically, simple and highly accurate closed-form approximations for the cumulative density function of the FAS channel and the outage probability of the proposed system are obtained by employing a novel asymptotic matching method, which is an improved version of the well-known moment matching. With this method, the outage probability can be computed simply without incurring complex multi-fold integrals, thus requiring negligible computational effort. Finally, the accuracy of the proposed approximations is validated, and it is shown that the FAS can meet or even exceed the performance attained by the conventional maximal ratio combining (MRC) technique.
By recognizing the tremendous flexibility of the emerging fluid antenna system (FAS), which allows dynamic reconfigurability of the location of the antenna within a given space, this letter investigates the performance of a single-antenna FAS over spatially correlated Nakagami- m fading channels. Specifically, simple and highly accurate closed-form approximations for the cumulative density function of the FAS channel and the outage probability of the proposed system are obtained by employing a novel asymptotic matching method, which is an improved version of the well-known moment matching. With this method, the outage probability can be computed simply without incurring complex multi-fold integrals, thus requiring negligible computational effort. Finally, the accuracy of the proposed approximations is validated, and it is shown that the FAS can meet or even exceed the performance attained by the conventional maximal ratio combining (MRC) technique.
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