Rodríguez Corbo, Fidel AlejandroAzpilicueta Fernández de las Heras, LeyreCelaya Echarri, MikelShubair, Raed M.Falcone Lanas, Francisco2023-02-232023-02-232022Rodriguez-Corbo, F. A., Azpilicueta, L., Celaya-Echarri, M., Shubair, R., & Falcone, F. (2022). 3-d ray launching mimo channel geometric estimation. IEEE Antennas and Wireless Propagation Letters, 21(12), 2362-2366. https://doi.org/10.1109/LAWP.2022.31936131536-122510.1109/LAWP.2022.3193613https://academica-e.unavarra.es/handle/2454/44788The complete multiple-input–multiple-output (MIMO) channel simulation in deterministic techniques can be a computationally intensive task, due to the inherent scenario’s complexity and number of antennas. The spatial coherence among MIMO elements is a reasonable assumption to approximate the channel from a single point simulation. In this letter, a novel method to incorporate a geometrical approximation of the MIMO channel into a three-dimensional ray launching (3D-RL) algorithm is presented. The method is antenna type independent and the orientation of the array is embedded in the antenna representation. Relevant information of the MIMO channel characteristics like the root mean square (rms) delay spread, the maximum delay spread, phase and channel capacity are obtained and compared with the full 3D-RL simulation of the entire MIMO array, achieving 93.4% reduction in computational time.application/pdfengCreative Commons Attribution 4.0 LicenseAntenna arraysApproximation methodsChannel responseComputational modelingHesse normal formIndexesMathematical modelsMIMOMIMO communicationPhased arraysRay launchinginfo:eu-repo/semantics/article2023-02-23Acceso abierto / Sarbide irekiainfo:eu-repo/semantics/openAccess