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On the Distribution of the Sum of Generalized Gamma Variates and Applications to Satellite Digital Communications
2005 2nd International Symposium on Wireless Communication Systems
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A versatile envelope distribution which may be useful for both terrestrial and satellite fading channel modelling is the generalized Gamma (GG) distribution. ...
These expressions are used to derive a closed-form union upper-bound for the distribution of the sum of GG distributed RVs. ...
ACKNOWLEDGMENT This work has been performed within the framework of the Satellite Network of Excellence (SatNEx) project, a Network of Excellence (NoE) funded by European Committee (EC) under the FP6 program ...
doi:10.1109/iswcs.2005.1547816
fatcat:gzfaaypfbnez5glfdcwwu2xxi4
A decomposition technique for efficient generation of correlated Nakagami fading channels
2000
IEEE Journal on Selected Areas in Communications
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The validity of the new technique is examined through the generation of a correlated Nakagami sequence, as encountered in U.S. digital cellular, and a multibranch vector channel as encountered in diversity ...
In this paper, by introducing a direct-sum decomposition principle and determining the statistical mapping between the correlated Nakagami process and a set of Gaussian vectors for its generation, a simple ...
To begin with, we relate the variance of a gamma variable to its counterpart for Nakagami variate. Consider the moments of the Nakagami distribution NK . ...
doi:10.1109/49.895043
fatcat:x464w6g62fe47csf4xzbjokxxy
A Review of Requirements for Gamma Radiation Detection in Space Using CubeSats
2021
Applied Sciences
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In this paper, we will discuss and analyze the main features of a CubeSat mission targeting intense and short bursts of gamma-rays. ...
For example, the origin of catastrophic astronomical events can be pinpointed with unprecedented resolution by measuring the gamma-ray coincidence signals in CubeSats flying in formations, and possibly ...
Acknowledgments: The authors would like to thank Sebastian Kalos, Basel AlTawil, and Giovanni Franchi for the fruitful discussions. ...
doi:10.3390/app11062659
fatcat:orbh4qbktfbd7iqcq4whieitai
An Overview of the Physical Insight and the Various Performance Metrics of Fading Channels in Wireless Communication Systems
[chapter]
2011
Advanced Trends in Wireless Communications
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To address such non-homogeneities of the propagation medium more generic distributions have been proposed such as the generalized gamma, the κ-µ and the η-µ distributions. ...
of a digital communications system is to evaluate the decision variables and from these to determine the probability of error. ...
Advanced Trends in Wireless Communications
Edited by Dr. Mutamed Khatib Hard cover, 520 pages ...
doi:10.5772/15028
fatcat:mkdpmg3tjfe7pclupzhyibvpzi
QoS Evaluation of HTTP over Satellites
2011
2011 International Conference on Cyber-Enabled Distributed Computing and Knowledge Discovery
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This paper presents the studies for the end-to-end QoS of IP over integrated terrestrial and Next Generation Satellite Network (NGSN) using HTTP web application. ...
A Differentiated Services (Diffserv) queue interface is placed in the terrestrial network on the server side to regulate and differentiate the traffic flows across the narrow bandwidth of the satellite ...
INTRODUCTION The Next Generation Satellite Network (NGSN) plays a very important role in providing ubiquitous communications across the globe. ...
doi:10.1109/cyberc.2011.38
dblp:conf/cyberc/AudahSC11
fatcat:hgz3ebozbjaalgtdi32xkwh254
On the distribution of the weighted sum of L independent Rician and Nakagami envelopes in the presence of AWGN
2001
Journal of Communications and Networks
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Finally, the relation between the distribution of the sum of m-Nakagami and Rice envelopes is investigated and discussed. ...
Comments, comparison with other existing techniques and useful curves for several practical wireless applications such as the calculation of the error bounds for coding on fading channels in mobile satellite ...
of the error bounds for coding on fading channels in mobile satellite applications). ...
doi:10.1109/jcn.2001.6596855
fatcat:ryyjnnqfnnfrhaqneey2x2wzhi
On the performance analysis of equal-gain diversity receivers over generalized gamma fading channels
2006
IEEE Transactions on Wireless Communications
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These expressions are used to derive a closed-form union upper bound for the distribution of the sum of GG distributed RVs. ...
A versatile envelope distribution which generalizes many commonly used models for multipath and shadow fading is the so-called generalized Gamma (GG) distribution. ...
Distribution of the Sum of GG Variates Let us define S to be the sum of N GG RVs, i.e., S = N i=1 R i . (12)
Theorem 2 (A cdf bound of the sum of GG RVs): The cdf of S is upper bounded as F S (y) ≤ F ...
doi:10.1109/twc.2006.05301
fatcat:7ldldmgvrncxnjdhf5vxhl72ee
Point-to-Point Communication in Integrated Satellite-Aerial 6G Networks: State-of-the-art and Future Challenges
2021
IEEE Open Journal of the Communications Society
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This paper surveys the literature on point-to-point (P2P) links for integrated satellite-aerial networks, which are envisioned to be among the key enablers of the sixth-generation (6G) of wireless networks ...
The paper then classifies the connecting P2P communications links as satellite-to-satellite links at the same layer (SSLL), satellite-to-satellite links at different layers (SSLD), and HAP-to-HAP links ...
., star, mesh, and line) used in satellite networks based on the target application [51] . ...
doi:10.1109/ojcoms.2021.3093110
fatcat:57x5vhs33famho2tnb5qot2dcu
A unified approach to the probability of error for noncoherent and differentially coherent modulations over generalized fading channels
1998
IEEE Transactions on Communications
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The best example of this occurs for multichannel reception where the fading on each channel need not be identically distributed nor even distributed according to the same family of distributions. ...
Our approach relies on an alternate form of the Marcum Q-function and leads to expressions of the BER involving a single finite-range integral which can be readily evaluated numerically. ...
In virtually all applications of (16) to communication system performance analysis, the parameters and are typically independent of SNR, and furthermore . ...
doi:10.1109/26.737401
fatcat:nr75jvf7zbcmnfzvdtp5r4edm4
BER Analysis in Multi Carrier OFDM Scheme For 5G Wireless Communications
2020
International Journal of Engineering and Technical Research (IJETR)
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Vemakoti Viveknand M.Tech, MBA, is a curious researcher in quantum electrodynamics and high speed signal transmissions though had a deep insights on photovoltaic cells' performance calibrations in his ...
The Nakagami distribution or the Nakagami-m distribution is a probability distribution related to the gamma distribution. ...
The expression is given as a product of the well-known gamma function and a finite sum of functions of the Nakagami -m fading parameter. ...
doi:10.31873/ijetr.10.2.64
fatcat:i445bshn3nc4rggbsfgen2bfnu
Retrofitting FSO Systems in Existing RF Infrastructure: A Non-Zero Sum Game Technology
[article]
2021
arXiv
pre-print
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This paper discusses installing infrared OWC, known as free space optics (FSO), systems on top of installed radio frequency (RF) networks for outdoor applications to benefit from the reliability of RF ...
We equally review commercially available solutions and the hardware requirements for RF and FSO technology co-existence. The potential of hybrid RF/FSO for space communication is further discussed. ...
Overview on Satellites and Space Communication Satellites have a wide range of applications, including remote sensing, climate change control, deep space exploration, tackling the digital divide, and providing ...
arXiv:2105.07543v1
fatcat:jhy7r6aocba2lmiw7gk7qsxesq
CubeSats for Gamma-Ray Astronomy
[article]
2022
arXiv
pre-print
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After many years of flying in space primarily for educational purposes, CubeSats - tiny satellites with form factors corresponding to arrangements of "1U" units, or cubes, each 10 cm on a side - have come ...
Gamma-ray-sensing CubeSats are certain to make an important contribution in the new era of multi-messenger, time-domain astronomy by detecting and localizing bright transients such as gamma-ray bursts, ...
The GMOD component of the on-board software processes summed TTE data to generate light-curves, spectra, and trigger data-types. ...
arXiv:2212.11413v1
fatcat:n5tgwrmbezekzk7le6sai2s4c4
Denoising Smooth Signals Using a Bayesian Approach: Application to Altimetry
2017
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
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The proposed algorithm is tested on satellite altimetric data demonstrating good denoising results on both synthetic and real signals. ...
In addition, a gamma Markov random field prior is assigned to the signal energies and to the noise variances to account for their known properties. ...
, and the inverse-gamma distribution is decreasing on each side of its maximum. ...
doi:10.1109/jstars.2016.2629516
fatcat:ev2ao3ngpzfmdetvxcon7r24ie
Survey on Free Space Optical Communication: A Communication Theory Perspective
2014
IEEE Communications Surveys and Tutorials
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been recently explored for the design of next generation FSO systems. ...
In this paper, we present an up-to-date survey on FSO communication systems. The first part describes FSO channel models and transmitter/receiver structures. ...
Variations of OWC can be potentially employed in a diverse range of communication applications ranging from optical interconnects within integrated circuits through outdoor inter-building links to satellite ...
doi:10.1109/comst.2014.2329501
fatcat:exn6xduerrb37nr3t4x3vuj6cy
New readout and data-acquisition system in an electron-tracking Compton camera for MeV gamma-ray astronomy (SMILE-II)
2015
Nuclear Instruments and Methods in Physics Research Section A : Accelerators, Spectrometers, Detectors and Associated Equipment
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After the success of a first balloon experiment in 2006 with a small ETCC (using a 10×10×15 cm^3 TPC) for measuring diffuse cosmic and atmospheric sub-MeV gamma rays (Sub-MeV gamma-ray Imaging Loaded-on-balloon ...
For MeV gamma-ray astronomy, we have developed an electron-tracking Compton camera (ETCC) as a MeV gamma-ray telescope capable of rejecting the radiation background and attaining the high sensitivity of ...
, 23654067, 25610042), a Grantin-Aid from the Global COE program "Next Generation Physics, Spun from Universality and Emergence" from the MEXT of Japan, and a Grant-in-Aid for JSPS Fellows (Grant numbers ...
doi:10.1016/j.nima.2015.08.004
fatcat:77ilw4nsura4xog7hjw6zfwlzm
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