A Sum-Product Model as a Physical Basis for Shadow Fading
| dc.creator | Salo, Jari | |
| dc.date | 2007-02-18 | |
| dc.date.accessioned | 2026-07-07T07:47:28Z | |
| dc.date.available | 2026-07-07T07:47:28Z | |
| dc.description | Shadow fading (slow fading) effects play a central role in mobile communication system design and analysis. Experimental evidence indicates that shadow fading exhibits log-normal power distribution almost universally, and yet it is still not well understood what causes this. In this paper, we propose a versatile sum-product signal model as a physical basis for shadow fading. Simulation results imply that the proposed model results in log-normally distributed local mean power regardless of the distributions of the interactions in the radio channel, and hence it is capable of explaining the log-normality in a wide variety of propagation scenarios. The sum-product model also includes as its special cases the conventional product model as well as the recently proposed sum model, and improves upon these by: a) being applicable in both global and local distance scales; b) being more plausible from physical point of view; c) providing better goodness-of-fit to log-normal distribution than either of these models. | |
| dc.description | 23 pages, 9 figs. To be revised and maybe submitted | |
| dc.identifier | https://arxiv.org/abs/cs/0702098 | |
| dc.identifier | http://arxiv.org/abs/cs/0702098 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/124178 | |
| dc.subject | Other Computer Science | |
| dc.title | A Sum-Product Model as a Physical Basis for Shadow Fading | |
| dc.type | text |