Three-site space-diversity experiment at 20 GHz using ACTS in the Eastern United States

Goldhirsh, J.; Musiani, B.H.; Dissanayake, A.; Lin, Kuan-Ting

doi:10.1109/5.598419

Cited by 36 publications

(21 citation statements)

References 4 publications

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“…1). This is the typical configuration of two Earth-space links pointing to the same satellite in a site diversity configuration aimed at increasing the overall system performance [6]. In this geometry, depends on the local rain height and on the elevation angle of the links, according to the simple expression , which assumes invariance of the rain rate with height [12].…”

Section: Spatial Correlation Index Of Rain Attenuationmentioning

confidence: 99%

“…Considering the prevalent impact of rain, this probability is strongly dependent on the spatial distribution of the rain attenuation. In site diversity systems, information on the spatial correlation of the rain attenuation as a function of the distance between two or more locations is essential for the proper design of diversity schemes, whose performance improves as the attenuation simultaneously affecting the sites becomes more and more decorrelated [6]. Knowledge of the correlation coefficient is useful also for time series generators and models to be employed in the simulation of satellite networks, where the proper degree of spatial correlation must be maintained in order to generate reliable results [7], [8].…”

Section: Introductionmentioning

confidence: 99%

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On the Relationship Between the Spatial Correlation of Point Rain Rate and of Rain Attenuation on Earth-Space Radio Links

Luini

Capsoni

2013

IEEE Trans. Antennas Propagat.

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This contribution presents an analytical expression to predict the spatial correlation of the rain attenuation A impairing two Earth-space radio links in a site diversity configuration (A) as a function of the spatial correlation of the rain precipitation affecting the area (R), of the distance between the two stations d and of the electrical and geometrical characteristics of the links. Well-established properties of the rain field (i.e. quasi-ergodicity and spatial stationarity) are exploited in the derivation of the proposed analytical expression, whose accuracy is evaluated by means of an extensive set of rain field data collected by the NIMROD weather radar network in the UK. Results indicate a satisfactory prediction performance in the 10-50 GHz frequency range, with negligible dependence on the site separation distance d and on the electrical and geometrical characteristics of the system

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Section: Spatial Correlation Index Of Rain Attenuationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

On the Relationship Between the Spatial Correlation of Point Rain Rate and of Rain Attenuation on Earth-Space Radio Links

Luini

Capsoni

2013

IEEE Trans. Antennas Propagat.

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“…In this environment, strong signal fades can no longer be overcome making use of static power margins, but require the application of Fade Mitigation Techniques (FMTs) as a viable solution [2]. To this end, telecommunication systems based on site diversity can be envisaged [3][4][5][6][7][8][9][10][11][12][13][14][15]: in fact, the use of multiple receiving stations permits us to take advantage of the spatial variability of rain, so that a distance of the order of tens of kilometers between the stations significantly reduces the probability that both stations are undergoing an outage and, therefore, that the system is unavailable [16]. The design of a site diversity system (of FMTs in general), however, requires the evaluation of the advantages (e.g.…”

Section: Introductionmentioning

confidence: 99%

Weather radar data for site diversity predictions and evaluation of the impact of rain field advection

Luini

Jeannin²,

Capsoni

et al. 2010

Satell Commun Network

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This paper presents the analysis on two weather radar datasets, collected at Spino d’Adda (Italy) and Bordeaux (France), for the simulation and the performance evaluation of a site diversity system. Results from the two locations are compared and the impact of different factors such as the baseline and link orientation is assessed and related to the local climatologic characteristics. The results obtained are then compared with the model currently recommended by the ITU-R for the estimation of the site diversity performance. A linkage is then established between the preferable baseline orientation and the predominant direction of the rain field advection. The rain field displacement is finally shown to be well approximated by the wind speed and direction relative to the 700 hPa isobar extracted from the ECMWF ERA-40 meteorological database

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“…Until now, the performance of such a technique has been investigated through measurement campaigns [3,10] and through the development of statistical models. The use of a log-normal model for the single-site distribution of rainfall intensity and rain attenuation was proposed [11,12].…”

Section: Introductionmentioning

confidence: 99%

Large‐scale site diversity for satellite communication networks

Luglio

Mancini

Riva

et al. 2002

Int. J. Satell. Commun.

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SUMMARYThe utilization of high frequencies, such as Ka-band and beyond, necessary to avoid the highly congested lower satellite frequencies and to get larger bandwidth availability is considered for many developing satellite systems.The new satellite low-margin systems in Ka-band will need to be designed using fade countermeasures to counteract rain attenuation. One of these techniques foresees the possibility of switching the communication link among different Earth stations spread on a very large territory to reduce the system outage time to the joint outage time of all the stations.The design of such systems depends on the probability that the Earth stations simultaneously exceed their margins.In this paper, a well-assessed model is utilized for the prediction of joint statistics of rain attenuation in multiple locations, using Monte Carlo simulation. The model is based on a pair of multi-variate normal processes whose parameters are related to those characterizing the single-location statistics and whose covariance matrices are assumed to depend only on the distances between locations.The main results concerning both the probability and margin improvement will be presented and discussed.

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Three-site space-diversity experiment at 20 GHz using ACTS in the Eastern United States

Cited by 36 publications

References 4 publications

On the Relationship Between the Spatial Correlation of Point Rain Rate and of Rain Attenuation on Earth-Space Radio Links

On the Relationship Between the Spatial Correlation of Point Rain Rate and of Rain Attenuation on Earth-Space Radio Links

Weather radar data for site diversity predictions and evaluation of the impact of rain field advection

Large‐scale site diversity for satellite communication networks

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