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Promoting structural sustainable design through the influence of quality control assessments. [PDF]
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Ancient hybridization and phylogenetic discordance: Exploring evolutionary complexity in Asteraceae. [PDF]
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An Optimal Lognormal Approximation to Lognormal Sum Distributions
IEEE Transactions on Vehicular Technology, 2004Sums of lognormal random variables occur in many problems in wireless communications because signal shadowing is well modeled by the lognormal distribution. The lognormal sum distribution is not known in the closed form and is difficult to compute numerically.
Norman C Beaulieu
exaly +2 more sources
Approximating Lognormal Sum Distributions With Power Lognormal Distributions
IEEE Transactions on Vehicular Technology, 2008In wireless communications, cochannel interference is usually characterized by a sum of lognormal random variables. Since the characteristic function of a lognormal distribution lacks explicit expression, and numerical calculation of a lognormal sum distribution is very challenging, lognormal distributions are often used to approximate lognormal sum ...
J Almhana
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Mixture Lognormal Approximations to Lognormal Sum Distributions
IEEE Communications Letters, 2007In wireless communication, co-channel interference is usually characterized by a sum of lognormal random variables. Since calculating the exact distribution of a lognormal sum has a lot of challenges, lognormal distributions are often used to approximate lognormal sum distributions.
J Almhana
exaly +2 more sources
Approximating the Sum of Correlated Lognormal or, Lognormal-Rice Random Variables
2006 IEEE International Conference on Communications, 2006 A simple and novel method is presented to approximate by the lognormal distribution the probability density function of the sum of correlated lognormal random variables. The method is also shown to work well for approximating the distribution of the sum of lognormal-Rice or Suzuki random variables by the lognormal distribution.
Neelesh B. Mehta +3 more
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Lognormal and Mixed Gaussian–Lognormal Kalman Filters
Monthly Weather Review, 2023Abstract In this paper we present the derivation of two new forms of the Kalman filter equations; the first is for a pure lognormally distributed random variable, while the second set of Kalman filter equations will be for a combination of Gaussian and lognormally distributed random variables.
Steven J. Fletcher +8 more
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IEEE Transactions on Vehicular Technology, 2015
Modeling the variations in the local mean received power, the shadow fading is a relatively understudied effect in the literature. The inaccuracy of the universally accepted lognormal model is shown in many works. However, proposing other statistical distributions, such as gamma, which are not stemmed from the natural underlying physical process ...
Saliha Buyukcorak +2 more
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Modeling the variations in the local mean received power, the shadow fading is a relatively understudied effect in the literature. The inaccuracy of the universally accepted lognormal model is shown in many works. However, proposing other statistical distributions, such as gamma, which are not stemmed from the natural underlying physical process ...
Saliha Buyukcorak +2 more
openaire +2 more sources
On the Capacity of FSO Links under Lognormal and Rician-Lognormal Turbulences
2014 IEEE 80th Vehicular Technology Conference (VTC2014-Fall), 2014A unified capacity analysis under weak and composite turbulences of a free-space optical (FSO) link that accounts for pointing errors and both types of detection techniques (i.e. intensity modulation/direct detection as well as heterodyne detection) is addressed in this work.
Imran Shafique Ansari +2 more
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