Ionospheric scintillation effects on UHF satellite communications

Kullstam, P.; Keskinen, M. J.

doi:10.1109/milcom.2000.904036

Cited by 16 publications

(5 citation statements)

References 1 publication

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“…This eliminates the factors, which are functions of t d in (1). The resulting expression is given by…”

Section: Multipath Intensity Profile (Mip)mentioning

confidence: 99%

“…The satellite-to-terminal and terminal-tosatellite channel is characterized by various effects including the ionospheric scintillation, which is more significant in the equatorial and polar regions, urban, suburban, and rural terrestrial multipath, and mutipath reflections off the sea [1][2][3]. For a particular combination of satellite and terminal link configurations, these effects may occur singly or in combination.…”

Section: Introductionmentioning

confidence: 99%

“…Previous literature contains many significant results in this direction, especially for the frequency and time correlation function [1][2][3]5] for the MUOS channels. However, the results for the channel-scattering function for some very important cases are not available, undoubtedly due to significant analytical difficulties involved.…”

Section: Introductionmentioning

confidence: 99%

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Scattering functions for fading channels with ionospheric scintillation and terrestrial multipath

Kumar

2005

2005 IEEE Aerospace Conference

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Abstract⎯The MUOS satellite-to-terminal and terminal-tosatellite channel is characterized by ionospheric scintillation and/or terrestrial multipath effects. In earlier literature various channel conditions have been considered and timefrequency correlation functions of the channel fading process have been derived. In practice, in terms of the design of the receivers operating over such channels, functions such as the scattering function, the multipath intensity profile (MIP), and the fading envelope power spectral density (PSD) are of significant interest. The latter two functions⎯namely, the MIP and the PSD⎯can be obtained by simple substitutions in the scattering function, i.e., these are the one-dimensional version of the twodimensional scattering function. The scattering functions for some of the MUOS channel models exist in the literature. However, for some important channel models, such a function is not available, due to significant analytical difficulties. This paper presents the scattering function for such cases in the form of a series involving Bessel functions and the Chebychev and Hermite polynomials. 1

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“…This eliminates the factors, which are functions of t d in (1). The resulting expression is given by…”

Section: Multipath Intensity Profile (Mip)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Scattering functions for fading channels with ionospheric scintillation and terrestrial multipath

Kumar

2005

2005 IEEE Aerospace Conference

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“…These and other papers have formed the basis for the design and modeling of the United States Department of Defense (DoD) Mobile User Objective System (Kullstam & Keskinen, 2000; Satorius & Zhong, 2003; Zhong & Satorius, 2003).…”

Section: Introductionmentioning

confidence: 99%

Wideband Characterization of Equatorial Ionospheric Fading Using MUOS Signals

Subash

Cannon

2022

Radio Science

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Six hundred hours of data from a receiver located at the Cape Verde Atmospheric Observatory at 15°N (dip latitude), has been used to explore the fading correlation of 300–360 MHz trans‐ionospheric signals from the MUOS satellite. Using these data, we have highlighted that the inter‐frequency correlation varies with the fading frequency; components at frequencies close to the Fresnel frequency tend to be well correlated over bandwidths between 15 MHz and greater than 20 MHz, but those at higher fading frequencies are only well correlated over bandwidths between 0.1 and 5 MHz at a correlation threshold of 0.7. When considered over all fading frequencies, flat fading is far more common than frequency selective fading, such that when the frequency separation is 5 MHz and when S4 lies between 0.7 and 0.8, the ratio is ∼16:1, when the separation is 10 MHz the ratio is ∼9:1 and when the separation is 15 MHz it is ∼7:1. Together, the results in this paper suggest that flat fading is the dominant fading mechanism for satellite communication systems, with bandwidths up to 15 MHz, operating in the high VHF and low UHF bands in the equatorial region. At still higher operating bandwidths we expect frequency selective fading to become dominant as the differentially delayed multipath components, occurring via Fresnel scale irregularities, cause destructive and constructive interference.

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“…The double Rayleigh fading channel and double Rician fading channel have gained interest due to its applicability in satellite mobile communication [1]- [3], mobile-to-mobile communication [4]- [6], and multipleinput multiple-output (MIMO) wireless communication [7]- [8].…”

Section: Introductionmentioning

confidence: 99%

Performance of M-PSK modulation in double Rician fading channels with MRC diversity

Wongtrairat

Supnithi

Tantaratana

2008

2008 5th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technolog

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In this paper, we derive the moment generating function (MGF) and average bit error probability (BEP) for M-PSK modulation with maximal ratio combining (MRC) diversity over double Rician fading channels. The results are provided in terms of instantaneous signal-to-noise ratio (SNR) per bit and expressed by using the generalized hypergeometric function . The derived error probabilities generalize three cases of combined fading with single Rayleigh, single Rician, and nonfading channel as special cases. In addition, the results are applicable to existing systems such as satellite mobile communication, mobile-to-mobile communication, and MIMO wireless communication system.

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Ionospheric scintillation effects on UHF satellite communications

Cited by 16 publications

References 1 publication

Scattering functions for fading channels with ionospheric scintillation and terrestrial multipath

Scattering functions for fading channels with ionospheric scintillation and terrestrial multipath

Wideband Characterization of Equatorial Ionospheric Fading Using MUOS Signals

Performance of M-PSK modulation in double Rician fading channels with MRC diversity

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