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2012 American Journal of Applied Sciences  
It is well known as the prediction of radio wave path loss in urban environment plays a key role in order to correctly plan wireless systems and mobile communication networks.  ...  To obtain more flexible prediction models able to give accurate results, in recent years Soft computing Techniques has been exploited.  ...  INTRODUCTION The prediction of the path loss in an urban environment is of paramount importance for the design and planning of the modern mobile communication systems.  ... 
doi:10.3844/ajassp.2012.1940.1943 fatcat:x2t7qdbca5hfnptwc5gy5wai6e

Heuristic UTD coefficients for radiowave coverage prediction in a urban scenario

Diego Tami, Cassio G. Rego, Fernando J. S. Moreira, Dinael Guevara, Andres Navarro
2015 2015 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)  
In order to evaluate each coefficient we analyze the statistical behavior of the mean and standard deviation of the absolute errors between the estimated values and the measured data of path loss in a  ...  Finally, we show the path loss prediction for each UTD coefficients proposed.  ...  multipath and so to evaluate the precision of path loss prediction for each coefficient with respect to measurements in a distinct urban environment, which is provided in [9] .  ... 
doi:10.1109/imoc.2015.7369102 fatcat:bv7iuxoyane6dhsj66krgz6wna

RSSI evaluation for multi-story building

Y. A. S. Dama, Ahmed Masri, Hidaya Ghannam, W. Shuaieb, H. Alhassan, H. A. Obeidat, R. A. Abd-Alhameed
2015 2015 Internet Technologies and Applications (ITA)  
In this paper we investigate the reliability of ray tracing simulator in predicting the indoor radio channel response through a well specified environment.  ...  The knowledge of the indoor environment geometric and martial properties led to such site specific modeling.  ...  8 dB and for a concrete wall with 12.5 cm thickness was 12 dB.  ... 
doi:10.1109/itecha.2015.7317438 fatcat:sekcuqv2kncphcrr2zhbp3w5ci

Path loss Optimization in WIMAX Network using Genetic Algorithm

2020 Iraqi Journal of Computer, Communication, Control and System Engineering  
urban, suburban environments.  ...  The execution of the COST-231 Hata paradigm and optimized paradigm are rated over the path loss. This model is optimized using Genetic Algorithm Technique using a computational tool MATLAB.  ...  G.A is performed by using the fitness function and calculates an average of a difference among the evaluated and measured path loss rates in all evaluation stage in the algorithm.  ... 
doi:10.33103/uot.ijccce.20.1.3 fatcat:fskff5bgnnannfsin6lzvbchdu

Three-Dimensional Urban EM Wave Propagation Model for Radio Network Planning and Optimization Over Large Areas

Y. Corre, Y. Lostanlen
2009 IEEE Transactions on Vehicular Technology  
Finally, the ability of the model to simulate radio wideband characteristics in a complex environment is demonstrated by comparing delay-spread estimates to measurements collected from a high-macrocell  ...  The resulting radio propagation maps exhibit seamless coverage between the various environments (dense urban, urban, and suburban).  ...  PERFORMANCE EVALUATION In a first example presented in this section, the performance of the 3-D urban model is evaluated by a comparison to drivetest power measurements in different urban environments.  ... 
doi:10.1109/tvt.2009.2016973 fatcat:aa7lvf6qkreqpigehm6jc6gtra

Fuzzy Logic Adaptive Min-Max Model (Flamm) for Pathloss Prediction in Mobile Communications Network

Olaniyi Ademola, Babalola Gbemisola
2016 International Journal of Computer Applications  
This issue should be met during system design when path loss calculations are carried out.  ...  enough for the evaluation of probable degree of variation of pathloss conditions in mobile communication.  ...  efficiency hence the usage of soft computing techniques (e.g.  ... 
doi:10.5120/ijca2016911918 fatcat:kuwosqc4n5forczpnftpb47ege

Deterministic and stochastic channel models implemented in a physical layer simulator for Car-to-X communications

J. Nuckelt, M. Schack, T. Kürner
2011 Advances in Radio Science  
</strong> This paper presents a physical (PHY) layer simulator of the IEEE 802.11p standard for Wireless Access in Vehicular Environments (WAVE).  ...  in order to achieve a robust data transmission.  ...  Acknowledgment The authors are grateful to the Ministry of Science and Culture of Lower Saxony for funding this work within the Connected Cars in a Connected World (C3World) project.  ... 
doi:10.5194/ars-9-165-2011 fatcat:erfgyka5zbegrenxjcxe6zrwgq

Analysis of Heuristic Uniform Theory of Diffraction Coefficients for Electromagnetic Scattering Prediction

Diego Tami, Cássio G. Rego, Dinael Guevara, Andrés Navarro, Fernando J. S. Moreira, Jordi Giménez, Hernan G. Triana
2018 International Journal of Antennas and Propagation  
Finally, we discuss the path loss prediction for each set of heuristic UTD coefficients in outdoor environment, as well as the comparison with the canonical results.  ...  To evaluate each set of coefficients, we analyzed the mean and standard deviation of the absolute error between estimates and measured data in Ottawa, Canada; Valencia, Spain; and Cali, Colombia.  ...  The authors would like to thank iTEAM and Professor Narcis Cardona for their help in Valencia.  ... 
doi:10.1155/2018/3029152 fatcat:7cocch3uwnfhzafs4tqoxppq5y

Developed channel propagation models and path loss measurements for wireless communication systems using regression analysis techniques

Yahia A. Zakaria, Ehab K. I. Hamad, A. S. Abd Elhamid, K. M. El-Khatib
2021 Bulletin of the National Research Centre  
The values of path loss exponent (n) are defined and calculated for both of urban and suburban regions.  ...  Measurements results are analyzed and compared in order to study their influence for every specific environment.  ...  The table of measurements for both of urban and suburban environments is stated in Table 4 . Moreover, the measured path loss for both of Dokki and Faysal territories is shown in Fig. 3 .  ... 
doi:10.1186/s42269-021-00509-x fatcat:uoiiwx2v6jarborpkcvvn7aczu

Inter-cell Interference Mitigation through Flexible Resource Reuse, LP-OFDM and Coordination techniques for LTE Advanced in Dense Urban Area

Balboul Younes, Najiba El Amrani El Idrissi
2016 Indonesian Journal of Electrical Engineering and Computer Science  
<p>The inter-cell interference problem is a key issue in LTE Advanced system especially in dense urban environments.  ...  This paper present a new inter-cell interference reduction technique for LTE Advanced downlink system in dense urban area based on a new coordination algorithm with the use of linear precoding OFDM, coordination  ...  Simulation Results and analysis This part gives simulation results that demonstrate the impact of inter-cell interference in dense urban environments.  ... 
doi:10.11591/ijeecs.v3.i3.pp527-533 fatcat:ulqtlrnhpjeflpsrwtuswrj5ja

Weighted ABG: A general framework for optimal combination of ABG Path-Loss Propagation Models

D. Casillas-Perez, C. Camacho-Gomez, S. Jimenez-Fernandez, A. Portilla-Figueras, S. Salcedo-Sanz
2020 IEEE Access  
In this paper we propose a novel path-loss model, the Weighted ABG (WABG), which suitably allows integrating or combine different available datasets, or previously proposed 5G propagation path-loss models  ...  INDEX TERMS 5G, path-loss, mmWave, ABG propagation models, models combination.  ...  Alonso for their guidance and problem definition.  ... 
doi:10.1109/access.2020.2999206 fatcat:ob4gbm274bdrddn7bv44fkpwja

Novel Heuristic UTD Coefficients for the Characterization of Radio Channels

Daniela N. Schettino, Fernando J. S. Moreira, Kleber L. Borges, Cssio G. Rego
2007 IEEE transactions on magnetics  
The proposed technique is then applied to characterize the scattering through a typical urban scenario in order to demonstrate its applicability.  ...  This paper presents novel heuristic coefficients for the uniform theory of diffraction (UTD), suited to analyze the scattering by lossy conducting wedges in an efficient and reciprocal manner.  ...  ACKNOWLEDGMENT This work was supported in part by CNPq and CAPES, Brazil.  ... 
doi:10.1109/tmag.2006.890975 fatcat:ij3x67rqk5bolhigw32szpxopy

Heuristic UTD coefficients for electromagnetic scattering by lossy conducting wedges

Daniela N. Schettino, Fernando J. S. Moreira, Cássio G. Rego
2010 Microwave and optical technology letters (Print)  
INTRODUCTION The numerical simulation of radiowave propagation in urban environments can be performed by different techniques.  ...  Results given by the new coefficients are also compared with path loss measurements performed in a typical urban scenario [9] .  ... 
doi:10.1002/mop.25557 fatcat:nfk7s2clxzgsbektzp5cfmfe7e

Using 3-D Video Game Technology in Channel Modeling

Andres Navarro Cadavid, Dinael Guevara Ibarra, Sebastian Londono Salcedo
2014 IEEE Access  
Game technologies offer a variety of options for exploiting the capabilities of graphical processing units and provide high performance in computing time with accurate results for channel modeling in current  ...  Our approach harnesses the power of video game development engines to provide an urban 3-D ray-based model for exploration and analysis of multipath channels for a wide frequency range in different complex  ...  RAY TRACING IN GRAPHICS AND PHYSICS In computer graphics, ray tracing is a rendering technique for generating realistic images by tracing the path of light through a 3D scene.  ... 
doi:10.1109/access.2014.2370758 fatcat:3dnojty35bhmvpysael2bndxma

Network planning for third-generation mobile radio systems

J.C.S. Cheung, M.A. Beach, J.P. McGeehan
1994 IEEE Communications Magazine  
The success of UMTS relies not only on the development of a flexible air interface, efficient coding techniques, and handset technology; it is equally important to design a system that can support the  ...  underlying technology and to interface with other networks. is with the Centre for Communicotions Research at the Univmiry of BristoL MARKA.  ...  Further up in the mapping path, performance of the data link and the communication link layers can be evaluated by extensive computer simulation, hardware testbed, and field trials.  ... 
doi:10.1109/35.330228 fatcat:5hfeneu3nngxbngrsnklacdv3q
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