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Development of a Proposal for a Measurement Protocol for the ISDB-Tb Standard for Costa Rica

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Development of a Proposal for a Measurement Protocol for the ISDB-Tb Standard for Costa Rica Development of a proposal for a measurement protocol for the ISDB-Tb standard for Costa Rica A Master's Thesis Submitted to the Faculty of the Escola Tècnica d'Enginyeria de Telecomunicació de Barcelona Universitat Politècnica de Catalunya by Mario Vega Argüello In partial fulfilment of the requirements for the degree of MASTER IN TELECOMMUNICATIONS ENGINEERING Advisor: Anna Umbert Juliana, PhD Barcelona, February 2019 Title of the thesis: Development of a proposal for a measurement protocol for the ISDB-Tb standard for Costa Rica. Author: Mario Vega Argüello Advisor: Anna Umbert Juliana, PhD Abstract This research defines a primary protocol for measuring DTTB in Costa Rica that is implemented with the adopted standard ISDB-Tb. It was required to determine which parameters were necessary to be monitored according to the needs of the Costa Rican entities, and which was the appropriate height to perform the measurements. As a first approach, it was considered appropriate to monitor at least the signal strength and MER in order to be able to evaluate the performance of a DTT transmission. From the field tests performed, it was observed that there is no correlation between the signal strength and the MER regardless of the different measuring heights, which implies that the effect of the multipath propagation is different at every location and every height. Therefore, it was determined that measuring at heights above the 2 m has no significant improvement in DTT reception in the case of channel 18, but it has significant improvements for channels 30 and 49. 1 Acknowledgements The development of this project was possible because of the help and support of various persons. First, I want to recognize the help received from Anna Umbert as director of the project. Her support was essential because gave me the opportunity of performing this research abroad in my homeland and provided all the guidance required during the process. Second, I would like to recognize the contribution of Glenn Fallas, Esteban Gonzalez, Alberto Araya and all the colleagues from the Administrative Unit of Spectrum, that contributed with their knowledge and experience to the analytical and practice al development of research. And finally, I want to thank my fiancé Adriana, my family and friends for all the support that they gave me during the past two years and a half until the fulfillment of the master with this project. 2 Revision history and approval record Revision Date Purpose 0 07/08/2018 Document creation 1 09/04/2019 Document revision 2 02/05/2019 Document correction 3 20/05/2019 Document revision Written by: Reviewed and approved by: Date 19/05/2019 Date 20/05/2019 Name Mario Vega Argüello Name Anna Umbert Juliana Position Project Author Position Project Supervisor 3 Table of contents Abstract ............................................................................................................................ 1 Acknowledgements .......................................................................................................... 2 Revision history and approval record ................................................................................ 3 Table of contents .............................................................................................................. 4 List of Figures ................................................................................................................... 6 List of Tables .................................................................................................................... 9 1. Introduction .............................................................................................................. 11 2. State of the art of the technology used or applied in this thesis ................................ 13 2.1. History of TV broadcasting ............................................................................... 13 2.2. Integrated Services Digital Broadcasting-Terrestrial international ..................... 14 2.2.1. The ATSC system ..................................................................................... 14 2.2.2. The DVB-T system .................................................................................... 15 2.2.3. The ISDB-T system ................................................................................... 16 2.3. DTT in Costa Rica ............................................................................................ 19 2.4. ISDB-T around the world .................................................................................. 21 3. Methodology / project development ......................................................................... 22 3.1. Bibliographical research ................................................................................... 22 3.2. Experimental research ...................................................................................... 22 3.3. Limitations of the research ................................................................................ 23 4. Development and achieved results .......................................................................... 24 4.1. Recommendations by specialized agencies ..................................................... 24 4.1.1. Coverage measurement procedures ......................................................... 28 4.1.2. Service measurement procedures ............................................................. 30 4.1.3. Capture of channel characteristics ............................................................. 32 4.1.4. Field survey methodology for fixed measurement of digital television reception.................................................................................................................. 33 4.1.5. Field survey methodology for nomadic measurement of digital television reception.................................................................................................................. 36 4.2. Recommendations applicable to SUTEL .......................................................... 37 4.3. Measurement Results ....................................................................................... 44 4.4. Measuring protocol proposal ............................................................................ 49 5. Conclusions and future development ....................................................................... 53 4 Bibliography .................................................................................................................... 56 Appendix 1. Simulations ................................................................................................. 58 Appendix 2. Measurements ............................................................................................ 79 Appendix 3. Statistical Analysis .................................................................................... 100 Glossary ....................................................................................................................... 107 5 List of Figures Figure 1. Evolution of television broadcasting. [3] ........................................................... 13 Figure 3. DTV system model. [4]..................................................................................... 14 Figure 4. OFDM segments in ISDB-T channels. [7] ........................................................ 17 Figure 5. Diagram of hierarchical transmission and partial reception. [8] ........................ 17 Figure 6. ISDB-T system configuration. [9] ..................................................................... 18 Figure 7. Configuration of channel coding section. [9] ..................................................... 18 Figure 2. Logo of information campaign of MICITT for transition to DTV. [11] ................. 19 Figure 8. Adopted standards for DTTB by country as of March 2019. [5] ........................ 21 Figure 9. SUTEL’s mobile measuring stations. [15]......................................................... 23 Figure 10. Equipment Set-Up for field tests. [16] ............................................................. 28 Figure 11. Cluster measurement point arrangements. [16] ............................................. 29 Figure 12. Survey measurement system. [16] ................................................................. 34 Figure 13. SUTEL measurement locations. .................................................................... 38 Figure 14. Diagram of equipment in mobile station ......................................................... 39 Figure 15. R&S ETL’s parameters available for ISDB-Tb service.................................... 42 Figure 16. R&S ETL’s parameters available for each layer of ISDB-Tb service. ............. 43 Figure 17. Field test measuring heights (A at 2.5 m, B at 4 m, C at 6 m and D at 8 m). .. 47 Figure 18. Field test system implementation. .................................................................. 48 Figure 19. Channel 18 coverage simulation with receivers at a height of 2m. ................. 60 Figure 20. Channel 18 coverage simulation with receivers at a height of 4m. ................. 61 Figure 21. Channel 18 coverage simulation with receivers at a height of 6m. ................. 62 Figure 22. Channel 18 coverage simulation with receivers at a height of 8m. ................. 63 Figure 23 Channel 18 coverage simulation with receivers at a height of 10 m. ............... 64 Figure 24. Channel 30 coverage simulation with receivers at a height of 2m.
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