Skip to main content
SpringerLink
Log in

Multipath fading characteristics of a digital microwave link in Western India

Caractéristiques des évanouissements par trajets multiples sur un faisceau hertzien numérique en inde de L’ouest

  • Published:
Annales Des Télécommunications Aims and scope Submit manuscript

Abstract

In the present paper multipath fading affecting the performance of an oversea digital microwave link situated in Western India is investigated. The results show that the highest number of severely error seconds are observed in the early morning and late evening hours. The investigations reveal that ground based layers are responsible for the high bit error rate observed and, elevated layers have no effect. The observed probability of outage is compared with that deduced from Serizawa’s and Lavergnat’s prediction methods.

Résumé

Les auteurs étudient les évanouissements par trajets multiples et leur effet sur les caractéristiques d’une liaison hertzienne au-dessus de la mer. Les résultats montrent que le plus grand nombre de secondes gravement erronées sont observées tôt le matin et tard le soir. Ces études montrent que les couches voisines de la surface sont responsables du taux élevé d’erreurs sur les bits tandis que les couches plus hautes sont sans effet. Les probabilités d’interruption observées sont comparées à celles obtenues en utilisant les méthodes de prévision de Serizawa et de Lavergnat.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. Di Zenobio (D.), Raji (T.). Automated power spectrum measurement for radio link characterisation.SBMO International Symposium Proceedings (1987), pp. 1183–1187.

  2. Lin (S. H.). Measured relative performance of antenna pattern diversity, antenna angle diversity and vertical space diversity in Mississipi.IEEE Global Telecommunications Conf. (1988), pp. 1433–1439.

  3. Ariyavisitakul (S.), Yoshida (S.), Ikegami (F.), Takeuchi (T.). A novel anti-multipath modulation technique dsk.IEEE Trans. Commun. (1987),35, no; 12, pp. 1252–1264.

    Article  Google Scholar 

  4. Niemeyer (M.), Schwarz (W. S.), Sommer (B.). A new method to minimise the multipath effects of digital microwave LOS systems based on wideband measurements at 5 and 15 GHz.Proc 13th European Microwave Conf. (1983), pp. 675–680.

  5. Barnett (W. T.). Multipath fading effects on digital radio.IEEE Trans. Commun. (1979),27, no 12, pp. 1842–1848.

    Article  MathSciNet  Google Scholar 

  6. Sasaki (O.), Akiyama (T.). Multipath delay characteristics on line-of-sight microwave radio systems.IEEE Trans. Commun. (1979),27, no 12, pp. 1876–1886.

    Article  Google Scholar 

  7. Olsen (R. L.). The role of atmospheric stratification and surface effects in multipath propagation over terrestrial line-of-sight links : A review of some recent results.SBMO International Microwave Symposium (1989), pp.401–408.

  8. Singal (S. P.), Aggarwal (S. K.), Pahwa (D. R.), Adiga (B. B.). Studies of marine boundary layer at Tarapur.Boundary Layer Meteorology (1986), pp. 371–383.

  9. Craig (K. H.), Kennedy (G. R.). Studies of multipath propagation on a microwave line-of-sight link.Proc. 17th European Microwave Conf. (1987), pp. 523–528.

  10. Beard (C. I.). Coherent and incoherent scattering of microwaves from the ocean.IRE Trans. Antennas and Propagation (1961),2, pp. 470–483.

    Article  Google Scholar 

  11. Sakagami (S.), Hosoya (S.). Some experimental results on inband amplitude dispersion and a method for estimating inband linear amplitude dispersion.IEEE Trans. Commun. (1982),30, no 8, pp. 1875–1887.

    Article  Google Scholar 

  12. Anderson (C. W.), Barber (S. G.), Patel (R. N.). The effect of selective fading on digital radio.IEEE Trans. Commun. (1979),27, no 12, pp. 1870–1876.

    Article  Google Scholar 

  13. Serizawa (Y), Takeshita (S.). A simplified method for prediction of multipath fading outage of digital radio.IEEE Trans. Commun. (1983),31, no 8, pp. 1017–1021.

    Article  Google Scholar 

  14. Barnett (W. T.). Multipath propagation at 4, 6, 11 GHz.Bell System Tech. Journal (1972),51, pp. 321–361.

    Google Scholar 

  15. Lavergnat (J.), Sylvain (M.), Bic (J. C). A method to predict multipath effects on a line-of-sight link.IEEE Trans. Commun. (1990),38, no 10, pp. 1810–1822.

    Article  Google Scholar 

  16. Dougherty (H. T.), Hartman (W. J.). Performance of a 400 Mbit/s system over a line-of-sight path.IEEE Trans. Commun. (1977),25, no 4, pp. 427–432.

    Article  Google Scholar 

  17. Netto (A. C. P.), Dhein (N. R.). Reduction of fadings due to ducts in los links by path inclination.Proc. of ISAP (1985), pp. 1071–1074.

  18. Prasad (M. V. S. N.), Sarkar (S. K.), Dutta (H. N.), Reddy (B. M.). Fading reduction in los microwave links due to path inclination.Electronics Letters (31st Jan. 1991),27, no 3, pp. 259–261.

    Article  Google Scholar 

  19. Lam (W. I.), Webster (A. R.). Microwave propagation on two line-of sight oversea paths.IEEE Trans. AP (1985),33, no 5, pp. 510–516.

    Google Scholar 

  20. Lee (J.). Dispersive microwave fading and lower atmospheric structure: An observational study.Radio Sci. (1989),24, no 2, pp. 133–146.

    Article  Google Scholar 

  21. Mon (J. P.), Mayrargue (S.). Sodar monitoring of the lower atmosphere and prediction of propagation anomalies on line of sight paths.Internat. Conf. on Commun. (1981), pp. 68.6.1–68.6.4.

  22. Kerr (D. E.). Propagation of short radio waves.Boston Technical Publishers (1961), USA, pp. 371–373.

Download references

Author information

Authors and Affiliations

  1. Radio science division, National physical laboratory, 110012, New Delhi, India

    M. V. S. N. Prasad, S. K. Sarkar, H. N. Dutta & B. M. Reddy

Authors
  1. M. V. S. N. Prasad
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. S. K. Sarkar
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. H. N. Dutta
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. B. M. Reddy
    View author publications

    You can also search for this author in PubMed Google Scholar

Rights and permissions

Reprints and permissions

About this article

Cite this article

Prasad, M.V.S.N., Sarkar, S.K., Dutta, H.N. et al. Multipath fading characteristics of a digital microwave link in Western India. Ann. Télécommun. 47, 49–55 (1992). https://doi.org/10.1007/BF02998726

Download citation

  • Received:

  • Accepted:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF02998726

Key words

Mots dés

Search

Navigation