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Medium wave DRM field test results in urban and rural environments

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6 Author(s)
Guerra, D. ; Dept. of Electron. & Telecommun., Univ. of the Basque Country, Bilbao, Spain ; Prieto, G. ; Fernandez, I. ; Matias, J.M.
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This paper presents the results of the first Spanish field trial carried out to analyze a DRM (Digital Radio Mondiale) system in the medium-wave band. A 4-kW average power omni directional ground-wave experimental DRM transmission at a frequency of 1359 kHz was surveyed by means of a measurement vehicle for fixed and mobile reception. Several radial routes starting from the transmitter site provided rural and suburban behavior features of the system. Urban reception trials were performed in several dense and open streets of Madrid, within the expected coverage area. Field strength threshold values were determined for the tested transmission configurations and compared with the AM ground-wave ITU model predictions. Reliability versus distance from the transmitter is stated in this paper for different transmission configurations and the causes of dropouts for different reception conditions are explained. This analysis took into account subjective quality features of each configuration, providing practical planning parameter values.

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Broadcasting, IEEE Transactions on  (Volume:51 ,  Issue: 4 )