access icon free Improved ITU-R model for digital terrestrial television propagation path loss prediction

© The Institution of Engineering and Technology
Received 20/03/2017, Published 02/06/2017

The use of a suitable propagation model for coverage prediction is key during the planning and dimensioning process of a digital terrestrial television (DTT) system. This study optimises one of the most detailed models for this purpose, i.e. Recommendation ITU-R.P.1812-4, with the aim of improving its accuracy in propagation path loss prediction for DTT systems in outdoor environments of Caracas city, Venezuela. For model adjustment, it is used the bioinspired technique particle swarm optimisation (PSO) and received signal level measurements performed in DTT systems in Caracas city under fixed reception conditions. The results, quantitatively analysed by RMS error and grey relation grade and mean absolute percentage error, shows a significant increase of the accuracy of optimised model in comparison with the original version and even with others propagation models.

Inspec keywords: digital television; particle swarm optimisation; UHF radio propagation; grey systems

Other keywords: propagation path loss prediction accuracy improvement; PSO; particle swarm optimisation; Recommendation ITU-R.P.1812-4; DTT system dimensioning process; received signal level measurements; DTT system planning; digital terrestrial television propagation path loss prediction; improved ITU-R model; fixed reception conditions; grey relation grade; Caracas city; mean absolute percentage error; bioinspired technique; RMS error; outdoor environments; coverage prediction

Subjects: Radiowave propagation; Optimisation techniques; Radio and television broadcasting

References

    1. 1)
    2. 2)
      • 4. International Telecommunications Union, Recommendation ITUR P.1546-5: ‘Method for point-to-area predictions for terrestrial services in the frequency range 30 to 3000 MHz’, Geneva, Switzerland, 2013.
    3. 3)
      • 2. International Telecommunications Union, Recommendation ITUR P.1812-4: ‘A path-specific propagation prediction method for point-to-area terrestrial services in the VHF and UHF bands’, Geneva, Switzerland, 2015.
    4. 4)
      • 5. Pinto, A.D., Torres, J.M., García, A.S., Pérez-García, N.A., Uzcátegui, J.R.: ‘Modelo para estimación de pérdidas de propagación en sistemas de Televisión Digital Abierta’, Revista Ing. Electron. Automatica. Comun., 2016, XXXVII, (2), pp. 67–81.
    5. 5)
      • 3. Perez-Garcia, N., Pinto-Mangones, A.D., Torres-Tovio, J.M., Perez-Di Santis, T.: ‘Planificación y dimensionamiento de sistemas celulares y de radio acceso – Volumen 1’ (Sello Editorial Corporación Universitaria del Sinú, Colombia, 2017).
    6. 6)
    7. 7)
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