نتایج جستجو برای: nakagami distribution

تعداد نتایج: 609373  

Journal: :Wireless Networks 2013
Marcos Tomio Kakitani Glauber Gomes de Oliveira Brante Richard Demo Souza Anelise Munaretto Fonseca Muhammad Ali Imran

In this paper we analyze the energy efficiency of single-hop, multihop, cooperative selective decode-and-forward, cooperative incremental decodeand-forward, and even the combination of cooperative and non-cooperative schemes, in wireless sensor networks composed of several nodes. We assume that, as the sensor nodes can experience either non line-of-sight or some lineof-sight conditions, the Nak...

2012
Dejan Milić Selena Stanojčić Zoran Popović Dušan Stefanović Ivana Petrović D. Milić S. Stanojčić Z. Popović D. Stefanović I. Petrović

Abstract: In this paper, performance analysis of diversity technique with equal gain combining method (EGC) with two branches for the detection of signals in wireless communication systems is presented. In the following analysis, it is assumed that the fading via channels is Nakagami-m correlated. The first order statistical characteristics of the system are analysed. Useful formulae for the pr...

2011
Sonika Singh

In this paper a multi-state model is developed for land mobile satellite systems, based upon measurements in an urban environment at 1.8 GHz, using Nakagami distribution. Multi-state models can yield more accurate fading amplitude time series than can single state models. Here pdfs have been derived using the second order statistics of LCR and AFD data. This simulator is general, and can be con...

2014
Edis Mekić Mihajlo Stefanović Petar Spalević Nikola Sekulović Ana Stanković Aleksandra Medvedeva

The distributions of random variables are of interest in many areas of science. In this paper, the probability density function PDF and cumulative distribution function CDF of ratio of products of two random variables and random variable are derived. Random variables are described with Rayleigh, Nakagami-m, Weibull, and α-μ distributions. An application of obtained results in performance analys...

Journal: :IEEE Communications Letters 2017
Seong Ki Yoo Simon L. Cotton Paschalis C. Sofotasios Michail Matthaiou Mikko Valkama George K. Karagiannidis

We consider the use of the Fisher–Snedecor F distribution, which is defined as the ratio of two chi-squared variates, to model composite fading channels. In this context, the root-mean-square power of a Nakagami-m signal is assumed to be subject to variations induced by an inverse Nakagamim random variable. Comparisons with physical channel data demonstrate that the proposed composite fading mo...

Journal: :Wireless Communications and Mobile Computing 2012
Qing Wang Dapeng Wu Pingyi Fan

The grail of next-generation wireless networks is providing real-time services for delay-sensitive applications, which require that the wireless networks provide QoS guarantees. The effective capacity (EC) proposed by Wu and Negi provides a powerful tool for design of QoS provisioning mechanisms. In this paper, we intend to generalize their formula for the effective capacity of a correlated Ray...

Journal: :EURASIP J. Wireless Comm. and Networking 2015
Mohammad Hossein Gholizadeh Hamidreza Amindavar James A. Ritcey

In this paper, a novel approach is proposed based on the probability density function (PDF) concept to achieve the capacity of a correlated ergodic multi-input multi-output (MIMO) channel with Nakagami-m fading. In our proposed method, channel parameters are unknown, and they are initially estimated by using the PDF of the received samples in the receiving antennas. The copula theory is employe...

2002
Ken-ichi Takizawa Shigenobu Sasaki Jie Zhou Shogo Muramatsu Hisakazu Kikuchi

In this paper, an online SNR estimator is proposed for parallel combinatorial SS (PC/SS) systems in Nakagami fading channels. The PC/SS systems are called as partialcode-parallel multicode DS/SS systems, which have the higherspeed data transmission capability comparing with conventional multicode DS/SS systems referred to as all-code-parallel systems. We propose an SNR estimator based on a stat...

Journal: :Aceh International Journal of Science and Technology 2023

Wind energy is renewable used as an source for wind power plants (PLTB). The most common distribution method to model speed data the Weibull distribution. Nakagami has begun be widely in several studies data. considered alternative modeling This study aims compare of and analyzing potential calculating resulting Energy Production (WEP), using from both distributions Kuta Raja, Banda Aceh Lhokng...

Journal: :European Journal of Mathematics and Statistics 2023

Telangana state's population is mostly dependent on agriculture. The economy depends heavily agriculture, as does the nation's and ability to achieve food security. Combining art science fit a statistical distribution data involves making trade-offs along way. secret effective analysis striking balance between improving distributional preserving ease of estimation while keeping in mind that ana...

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