Efficient combination of acceleration techniques applied to high frequency methods for solving radiation and scattering problems

Lozano, Lorena; Algar, María Jesús; García, Eliseo; Gónzalez, Iván; Cátedra, M.F.

doi:10.1016/j.cpc.2017.07.014

Cited by 9 publications

(1 citation statement)

References 19 publications

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“…With this information provided by NewFasant, the profile of the relative delays between rays (as shown in Figure 3) can be obtained, and the localization cost function can be computed according to expression 7. The computational cost associated with ray tracing is very high but speeding algorithms, such as Angular Z-buffer [65], can considerably reduce the computational time. This reduction enables the analysis of an excessive number of observation points in complex structures, such as an airport with parked aircrafts in a short period.…”

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confidence: 99%

Localization Approach Based on Ray-Tracing Simulations and Fingerprinting Techniques for Indoor–Outdoor Scenarios

et al. 2019

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The increase of the technology related to radio localization and the exponential rise in the data traffic demanded requires a large number of base stations to be installed. This increase in the base stations density also causes a sharp rise in energy consumption of cellular networks. Consequently, energy saving and cost reduction is a significant factor for network operators in the development of future localization networks. In this paper, a localization method based on ray-tracing and fingerprinting techniques is presented. Simulation tools based on high frequencies are used to characterize the channel propagation and to obtain the ray-tracing data. Moreover, the fingerprinting technique requires a costly initial learning phase for cell fingerprint generation (radio-map). To estimate the localization of mobile stations, this paper compares power levels and delay between rays as cost function with different distance metrics. The experimental results show that greater accuracy can be obtained in the location process using the delay between rays as a cost function and the Mahalanobis distance as a metric instead of traditional methods based on power levels and the Euclidean distance. The proposed method appears well suited for localization systems applied to indoor and outdoor scenarios and avoids large and costly measurement campaigns.

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confidence: 99%