Evaluation of data sets for mobile radio signal coverage up to 150 meters above ground

Author(s):  
Klaus Kainrath ◽  
Jakob Feiner ◽  
Wilhelm Zugaj ◽  
Erich Leitgeb ◽  
Holger Fluehr ◽  
...  



2018 ◽  
Vol 233 (9-10) ◽  
pp. 689-694 ◽  
Author(s):  
Julian Henn

Abstract For the evaluation of data sets from dynamic structure crystallography, it may be helpful to predict expected $R = {{{I_{ON}}} \over {{I_{OFF}}}}$ -based agreement factors from the observed intensities and their corresponding standard uncertainties with laser ON and with laser OFF. The predicted R factors serve three purposes: (i) they indicate, which data sets are suitable and promising for further evaluation, (ii) they give a reference R value for the case of absence of systematic errors in the data and (iii) they can be compared to the corresponding predicted F2-based R factors. For point (ii) it is inevitable, that the standard uncertainties from the experiment are adequate, i.e. they should adequately describe the noise in the observed intensities and must not be systematically over- or under estimated for a part of the data or the whole data set. It may be this requirement, which is currently the largest obstacle for further progress in the field of dynamic structure crystallography.



Author(s):  
Arnulfo Barroso de Vasconcellos ◽  
Etiane Oliveira Ponciano De Carvalho ◽  
Julia Favoretto Meyer ◽  
Saulo Roberto Sodre dos Reis ◽  
Teresa Irene Ribeiro de Carvalho Malheiro ◽  
...  
Keyword(s):  


1973 ◽  
Vol 22 (4) ◽  
pp. 110-113 ◽  
Author(s):  
W.C.-Y. Lee ◽  
R.H. Brandt




Author(s):  
Joseph Isabona ◽  
Kingsley Obahiagbon

Customer’s complaints and concerns about radio signal coverage at their home are important trigger to performance relevant drive test in the relevant area to observe the coverage quality. In this paper, statistical approach has been employed to assess the quality of the radio coverage and outage probability based on measured radio signals in an established UMTS network, operational in Ikoyi, a typical urban microcell in Nigerian environment. The results shows that the quality of radio signals at the cell edge is very poor in locations 2 and 4, as they recorded poor coverage probability performance of 89.25% and 81.72% and high outage probability performance of 10.74% and 18.28% respectively. It is also observed that the smaller the fade margin, the higher the outage probability and the lower the coverage reliability. This implies that the smaller the fade margin, the smaller the received signal strength at the MS and the more likely outage events. Hence, sufficient signal strength is needed at the mobile terminals at locations 2 and 4 in order to achieve the outage probability and coverage reliability required to effectively operate cellular communication networks.



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