A statistical basis for lognormal shadowing effects in multipath fading channels

Coulson, Alan J.; Williamson, A.G.; Vaughan, Rodney G.

doi:10.1109/26.664305

Cited by 181 publications

(118 citation statements)

References 20 publications

Supporting

Mentioning

116

Contrasting

Order By: Relevance

“…Since X (m) i,j is also log-normal [20], we expect the sum Z (m) i,j to also be Gaussian (in dB). A linear regression of the frequency averaged received signal powers {P (m) i,j } i,j versus known distances {d i,j } i,j is used to estimate the constants (P T − Π 0 ) and n p (6) for each experiment m. In our experiments, we have used ∆ 0 = 1m.…”

Section: A Analysis Of Received Powermentioning

confidence: 99%

Correlated link shadow fading in multi-hop wireless networks

Agrawal

Patwari

2009

IEEE Trans. Wireless Commun.

272

243

View full text Add to dashboard Cite

Accurate representation of the physical layer is required for analysis and simulation of multi-hop networking in sensor, ad hoc, and mesh networks. This paper investigates, models, and analyzes the correlations that exist in shadow fading between links in multi-hop networks. Radio links that are geographically proximate often experience similar environmental shadowing effects and thus have correlated fading. We describe a measurement procedure and campaign to measure a large number of multi-hop networks in an ensemble of environments. The measurements show statistically significant correlations among shadowing experienced on different links in the network, with correlation coefficients up to 0.33. We propose a statistical model for the shadowing correlation between link pairs which shows strong agreement with the measurements, and we compare the new model with an existing shadowing correlation model of Gudmundson (1991). Finally, we analyze multi-hop paths in three and four node networks using both correlated and independent shadowing models and show that independent shadowing models can underestimate the probability of route failure by a factor of two or greater.

show abstract

Section: A Analysis Of Received Powermentioning

confidence: 99%

Correlated link shadow fading in multi-hop wireless networks

Agrawal

Patwari

2009

IEEE Trans. Wireless Commun.

272

243

View full text Add to dashboard Cite

show abstract

“…Due to signals from various paths, it is more realistic to calculate the ensemble mean received power of all these signals. And signal distribution under fading channels has been proved to conform to a log-normal distribution closely [16].…”

Section: Chapter 2 Location Estimation In Wireless Sensor Networkmentioning

confidence: 99%

Assessment of Indoor Localization Algorithm Performance under Realistic Conditions

Roh¹

2017

jkiit

View full text Add to dashboard Cite

“…Shadowing is normally assumed to be frequency-nonselective, but in practice it is frequency-selective (Coulson et al, 1998). In a lossy medium the frequency has some effect because usually it is the thickness of the material in terms of the number of wavelengths and the electrical properties of the material that cause the loss (Pahlavan & Levesque, 1995).…”

Section: Shadowingmentioning

confidence: 99%