Shibuya Method and Modified ITU Knife Edge Diffraction Loss Model for Computing N Knife Edge Diffraction Loss

Kalu Okore Ama; Constance Kalu; Aneke Chikezie

doi:doi:10.11648/j.ajsea.20170602.13

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Shibuya Method and Modified ITU Knife Edge Diffraction Loss Model for Computing N Knife Edge Diffraction Loss

Kalu Okore Ama, Constance Kalu, Aneke Chikezie

Published in American Journal of Software Engineering and Applications (Volume 6, Issue 2)

Received: 3 January 2017 Accepted: 10 January 2017 Published: 12 June 2017

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Abstract

In this paper, algorithm for applying Shibuya multiple knife edge diffraction method and modified ITU-R P 526-13 knife edge diffraction loss approximation model are presented. Particularly, in this paper, algorithm for using the two models for computing N knife edge diffraction loss is presented. Requisite mathematical expressions for the computations are first presented before the algorithm is presented. Then sample 10 knife edge obstructions are used to demonstrate the application of the algorithm for C-band 6 GHz microwave link. The results showed that for the 10 knife edge obstructions spread over a path the maximum virtual hop single knife edge diffraction loss is 14.97452dB and it occurred in virtual hop j =6 which has the highest diffraction parameter of 1.027072 and the highest line of site (LOS) clearance height of 8.480769m. The minimum virtual hop single knife edge diffraction loss is 7.881902 dB and it occurred in virtual hop j =9 which has the lowest diffraction parameter of 0.114761 as well as the lowest LOS clearance height of 0.628571m. The algorithm is useful for development of automated multiple knife edge diffraction loss system based on Shibuya method and the modified ITU-R P 526-13 knife edge diffraction loss approximation model.

Published in	American Journal of Software Engineering and Applications (Volume 6, Issue 2)
DOI	10.11648/j.ajsea.20170602.13
Page(s)	29-34
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2017. Published by Science Publishing Group

Keywords

Single Knife Edge Diffraction, Diffraction Loss, ITU-R P 526-13 Model, Diffracting Parameter, Knife Edge Obstruction, Multiple Knife Edge Diffraction, Shibuya Diffracting Method

References

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[3]	Al-Hourani, A., Kandeepan, S., & Jamalipour, A. (2014, December). Modeling air-to-ground path loss for low altitude platforms in urban environments. In 2014 IEEE Global Communications Conference (pp. 2898-2904). IEEE.
[4]	Isa, A. K. M., Nix, A., & Hilton, G. (2015, November). Impact of diffraction and attenuation for material characterisation in millimetre wave bands. In Antennas & Propagation Conference (LAPC), 2015 Loughborough (pp. 1-4). IEEE.
[5]	Rani, P., Chauhan, V., Kumar, S., & Sharma, D. (2014). A Review on Wireless Propagation Models. nternational Journal of Engineering and Innovative Technology (IJEIT), 3(11
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[16]	Qing, L. (2005). GIS Aided Radio Wave Propagation Modeling and Analysis(Doctoral dissertation, Virginia Polytechnic Institute and State University).
[17]	Barclay, L. W. (2003). Propagation of radiowaves (Vol. 502). Iet.
[18]	Holm, P. D. (2004). Calculation of higher order diffracted fields for multiple-edge transition zone diffraction. IEEE Transactions on Antennas and Propagation, 52(5), 1350-1354.
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APA Style

Kalu Okore Ama, Constance Kalu, Aneke Chikezie. (2017). Shibuya Method and Modified ITU Knife Edge Diffraction Loss Model for Computing N Knife Edge Diffraction Loss. American Journal of Software Engineering and Applications, 6(2), 29-34. https://doi.org/10.11648/j.ajsea.20170602.13

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ACS Style

Kalu Okore Ama; Constance Kalu; Aneke Chikezie. Shibuya Method and Modified ITU Knife Edge Diffraction Loss Model for Computing N Knife Edge Diffraction Loss. Am. J. Softw. Eng. Appl. 2017, 6(2), 29-34. doi: 10.11648/j.ajsea.20170602.13

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AMA Style

Kalu Okore Ama, Constance Kalu, Aneke Chikezie. Shibuya Method and Modified ITU Knife Edge Diffraction Loss Model for Computing N Knife Edge Diffraction Loss. Am J Softw Eng Appl. 2017;6(2):29-34. doi: 10.11648/j.ajsea.20170602.13

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@article{10.11648/j.ajsea.20170602.13,
  author = {Kalu Okore Ama and Constance Kalu and Aneke Chikezie},
  title = {Shibuya Method and Modified ITU Knife Edge Diffraction Loss Model for Computing N Knife Edge Diffraction Loss},
  journal = {American Journal of Software Engineering and Applications},
  volume = {6},
  number = {2},
  pages = {29-34},
  doi = {10.11648/j.ajsea.20170602.13},
  url = {https://doi.org/10.11648/j.ajsea.20170602.13},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajsea.20170602.13},
  abstract = {In this paper, algorithm for applying Shibuya multiple knife edge diffraction method and modified ITU-R P 526-13 knife edge diffraction loss approximation model are presented. Particularly, in this paper, algorithm for using the two models for computing N knife edge diffraction loss is presented. Requisite mathematical expressions for the computations are first presented before the algorithm is presented. Then sample 10 knife edge obstructions are used to demonstrate the application of the algorithm for C-band 6 GHz microwave link. The results showed that for the 10 knife edge obstructions spread over a path the maximum virtual hop single knife edge diffraction loss is 14.97452dB and it occurred in virtual hop j =6 which has the highest diffraction parameter of 1.027072 and the highest line of site (LOS) clearance height of 8.480769m. The minimum virtual hop single knife edge diffraction loss is 7.881902 dB and it occurred in virtual hop j =9 which has the lowest diffraction parameter of 0.114761 as well as the lowest LOS clearance height of 0.628571m. The algorithm is useful for development of automated multiple knife edge diffraction loss system based on Shibuya method and the modified ITU-R P 526-13 knife edge diffraction loss approximation model.},
 year = {2017}
}

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TY  - JOUR
T1  - Shibuya Method and Modified ITU Knife Edge Diffraction Loss Model for Computing N Knife Edge Diffraction Loss
AU  - Kalu Okore Ama
AU  - Constance Kalu
AU  - Aneke Chikezie
Y1  - 2017/06/12
PY  - 2017
N1  - https://doi.org/10.11648/j.ajsea.20170602.13
DO  - 10.11648/j.ajsea.20170602.13
T2  - American Journal of Software Engineering and Applications
JF  - American Journal of Software Engineering and Applications
JO  - American Journal of Software Engineering and Applications
SP  - 29
EP  - 34
PB  - Science Publishing Group
SN  - 2327-249X
UR  - https://doi.org/10.11648/j.ajsea.20170602.13
AB  - In this paper, algorithm for applying Shibuya multiple knife edge diffraction method and modified ITU-R P 526-13 knife edge diffraction loss approximation model are presented. Particularly, in this paper, algorithm for using the two models for computing N knife edge diffraction loss is presented. Requisite mathematical expressions for the computations are first presented before the algorithm is presented. Then sample 10 knife edge obstructions are used to demonstrate the application of the algorithm for C-band 6 GHz microwave link. The results showed that for the 10 knife edge obstructions spread over a path the maximum virtual hop single knife edge diffraction loss is 14.97452dB and it occurred in virtual hop j =6 which has the highest diffraction parameter of 1.027072 and the highest line of site (LOS) clearance height of 8.480769m. The minimum virtual hop single knife edge diffraction loss is 7.881902 dB and it occurred in virtual hop j =9 which has the lowest diffraction parameter of 0.114761 as well as the lowest LOS clearance height of 0.628571m. The algorithm is useful for development of automated multiple knife edge diffraction loss system based on Shibuya method and the modified ITU-R P 526-13 knife edge diffraction loss approximation model.
VL  - 6
IS  - 2
ER  -

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Author Information

Kalu Okore Ama

Department of Electrical/Electronic and Computer Engineering, University of Uyo, Uyo, Nigeria
Constance Kalu

Department of Electrical/Electronic and Computer Engineering, University of Uyo, Uyo, Nigeria
Aneke Chikezie

Department of Electrical/Electronic and Computer Engineering, University of Uyo, Uyo, Nigeria

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Plain Text BibTeX RIS

APA Style

Kalu Okore Ama, Constance Kalu, Aneke Chikezie. (2017). Shibuya Method and Modified ITU Knife Edge Diffraction Loss Model for Computing N Knife Edge Diffraction Loss. American Journal of Software Engineering and Applications, 6(2), 29-34. https://doi.org/10.11648/j.ajsea.20170602.13

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ACS Style

Kalu Okore Ama; Constance Kalu; Aneke Chikezie. Shibuya Method and Modified ITU Knife Edge Diffraction Loss Model for Computing N Knife Edge Diffraction Loss. Am. J. Softw. Eng. Appl. 2017, 6(2), 29-34. doi: 10.11648/j.ajsea.20170602.13

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AMA Style

Kalu Okore Ama, Constance Kalu, Aneke Chikezie. Shibuya Method and Modified ITU Knife Edge Diffraction Loss Model for Computing N Knife Edge Diffraction Loss. Am J Softw Eng Appl. 2017;6(2):29-34. doi: 10.11648/j.ajsea.20170602.13

Copy | Download

@article{10.11648/j.ajsea.20170602.13,
  author = {Kalu Okore Ama and Constance Kalu and Aneke Chikezie},
  title = {Shibuya Method and Modified ITU Knife Edge Diffraction Loss Model for Computing N Knife Edge Diffraction Loss},
  journal = {American Journal of Software Engineering and Applications},
  volume = {6},
  number = {2},
  pages = {29-34},
  doi = {10.11648/j.ajsea.20170602.13},
  url = {https://doi.org/10.11648/j.ajsea.20170602.13},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajsea.20170602.13},
  abstract = {In this paper, algorithm for applying Shibuya multiple knife edge diffraction method and modified ITU-R P 526-13 knife edge diffraction loss approximation model are presented. Particularly, in this paper, algorithm for using the two models for computing N knife edge diffraction loss is presented. Requisite mathematical expressions for the computations are first presented before the algorithm is presented. Then sample 10 knife edge obstructions are used to demonstrate the application of the algorithm for C-band 6 GHz microwave link. The results showed that for the 10 knife edge obstructions spread over a path the maximum virtual hop single knife edge diffraction loss is 14.97452dB and it occurred in virtual hop j =6 which has the highest diffraction parameter of 1.027072 and the highest line of site (LOS) clearance height of 8.480769m. The minimum virtual hop single knife edge diffraction loss is 7.881902 dB and it occurred in virtual hop j =9 which has the lowest diffraction parameter of 0.114761 as well as the lowest LOS clearance height of 0.628571m. The algorithm is useful for development of automated multiple knife edge diffraction loss system based on Shibuya method and the modified ITU-R P 526-13 knife edge diffraction loss approximation model.},
 year = {2017}
}

Copy | Download

TY  - JOUR
T1  - Shibuya Method and Modified ITU Knife Edge Diffraction Loss Model for Computing N Knife Edge Diffraction Loss
AU  - Kalu Okore Ama
AU  - Constance Kalu
AU  - Aneke Chikezie
Y1  - 2017/06/12
PY  - 2017
N1  - https://doi.org/10.11648/j.ajsea.20170602.13
DO  - 10.11648/j.ajsea.20170602.13
T2  - American Journal of Software Engineering and Applications
JF  - American Journal of Software Engineering and Applications
JO  - American Journal of Software Engineering and Applications
SP  - 29
EP  - 34
PB  - Science Publishing Group
SN  - 2327-249X
UR  - https://doi.org/10.11648/j.ajsea.20170602.13
AB  - In this paper, algorithm for applying Shibuya multiple knife edge diffraction method and modified ITU-R P 526-13 knife edge diffraction loss approximation model are presented. Particularly, in this paper, algorithm for using the two models for computing N knife edge diffraction loss is presented. Requisite mathematical expressions for the computations are first presented before the algorithm is presented. Then sample 10 knife edge obstructions are used to demonstrate the application of the algorithm for C-band 6 GHz microwave link. The results showed that for the 10 knife edge obstructions spread over a path the maximum virtual hop single knife edge diffraction loss is 14.97452dB and it occurred in virtual hop j =6 which has the highest diffraction parameter of 1.027072 and the highest line of site (LOS) clearance height of 8.480769m. The minimum virtual hop single knife edge diffraction loss is 7.881902 dB and it occurred in virtual hop j =9 which has the lowest diffraction parameter of 0.114761 as well as the lowest LOS clearance height of 0.628571m. The algorithm is useful for development of automated multiple knife edge diffraction loss system based on Shibuya method and the modified ITU-R P 526-13 knife edge diffraction loss approximation model.
VL  - 6
IS  - 2
ER  -

Copy | Download