Naslov
Improved Model for Estimation of Spatial Averaging Path Length

Autori
Njemčević, Pamela ; Lipovac, Adriana ; Lipovac, Vladimir

Izvornik
Wireless communications and mobile computing (1530-8669) 2018 (2018); 1-13

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
shadow fading ; spatial averaging ; path length

Sažetak
In mobile communication systems, the transmitted RF signal is subject to mutually independent deterministic path loss and stochastic multipath and shadow fading. As at each spatial location mostly the composite signal samples are measured, their components are distinguished by averaging out the multipath-caused signal level variations, while preserving just the ones due to shadowing. The prerequisite for this is the appropriateness of the local area averaging path length that enables obtaining the local mean (composed of mean path loss and shadow fading) and the multipath fading as difference between the composite signal sample and the localmean. However, the so far reported analytical approaches to estimation of the averaging path length are based on considering either themultipath or just the shadow fading, with applicability limited to only specific topologies and frequencies. Therefore, in this paper, the most widely used Lee analytical method is generalized and improved by considering multipath and shadowing concurrently, so providing the general closed- formelementary-function based estimation of the optimal averaging path length as a function of common multipath and shadow fading parameters characterizing particular propagation environment. The model enables recommendations for the optimal averaging length for all propagation conditions facing the mobile receiver.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

POVEZANOST RADA