Medium Wave DRM Field Test Results in Urban and Rural Environments

Guerra, D.; Fernández, Igor; Matías, J. M.; Angueira, Pablo; Ordiales, J.L.

doi:10.1109/tbc.2005.852250

Cited by 31 publications

(14 citation statements)

References 2 publications

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“…The locations under test were extracted from a DRM measurement campaign, carried out in rural and suburban environments of central Spain and described in Table II. The details of this measurement campaign and the overall DRM system behavior results can be found in [11].…”

Section: Predictions Vs Measurementsmentioning

confidence: 99%

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Accuracy Analysis of the Millington's Prediction Method in the Medium Waveband

Guerra

Peña

Lopez

et al. 2007

IEEE Trans. Antennas Propagat.

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Millington's field strength prediction method is analyzed under different simulation conditions on the basis of the results of a medium waveband (MW or medium wave band extends from 530 to 1600 kHz) digital radio mondiale (DRM) measurement campaign. Millington technique applies the reciprocity condition by simply averaging the forward and reverse field strength values. This simplified approach could be a source of field strength prediction error in the MW planning tools. Critical path features for the fulfillment of the reciprocity condition are identified and their influence on predicted values is stated. Reciprocity effect on the predictions error is evaluated by means of the difference between digital medium wave field strength measured values of certain critical selected paths, and the corresponding Millington's method predicted ones. It has been found that the prediction error can be as high as 15 dB when comparing Millington's method results and measurements but the simple reciprocity approach made by Millington procedure is not the most remarkable source of error.Index Terms-Digital radio mondiale (DRM), field strength prediction, ground wave, medium wave, Millington's method.

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Section: Predictions Vs Measurementsmentioning

confidence: 99%

“…The conclusions of this study were used to select a set of measured field strength values from a DRM measurement campaign carried out in central Spain. This measurement campaign was initially designed to evaluate the DRM system performance in the medium waveband [11].…”

Section: Introductionmentioning

confidence: 99%

Accuracy Analysis of the Millington's Prediction Method in the Medium Waveband

Guerra

Peña

Lopez

et al. 2007

IEEE Trans. Antennas Propagat.

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“…Although the results are not comparable, tests in Brazil showed that the use of spectral shaping technique allowed the use of lower protection ratio (12 dB despite 16 dB in Mexico), achieving good results of digital reception. Also it should be considered that this kind of field tests [11,12,[15][16][17] allow raising planning parameters according to each environment, so the Brazilian field tests are a new dataset.…”

Section: Introductionmentioning

confidence: 99%

Medium wave DRM field trials in Brazil – Some daytime and nighttime results in urban environment

et al. 2012

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“…The signal and noise behaviour in this band has been studied in the previous years in outdoor tests [5]- [7], but the required information for indoor receiving conditions has not been sufficiently studied yet. A significant number of MW radio listeners, are expected to be using indoor receivers in the following years.…”

Section: Introductionmentioning

confidence: 99%

Urban indoor signal and noise measurements in the Medium Wave Band

Fernández¹,

Angueira²,

Landa³

et al. 2009

2009 Loughborough Antennas &Amp; Propagation Conference

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This paper presents a comparison study between Carrier to Noise (C/N) values measured outdoors and indoors in five office buildings of a city in Spain, related to radio broadcasted signals. Measurements were carried out in Bilbao at three frequencies in the Medium Wave Band: 639 kHz, 990 kHz and 1305 kHz. Results show that outdoor mean C/N results are 7.5 dB higher than indoors for 639 kHz and 6.5 dB and 5.9 dB for 990 kHz and 1305 kHz, respectively, with a high spatial variability. These results are mainly due to signal losses when penetrating in buildings, with mean values of 7.5 dB, 8.1 dB and 5.2 dB, respectively. It has also been observed that outdoor noise levels are about 1-3 dB higher than indoors. In some cases noisy spots have been detected where the mean field strength levels are 10 dB higher than outdoors. The measurements provide noise mean field strength levels (both indoors and outdoors) in the range of 65-70 dBȝV/m, values higher than the ones suggested in Rec. ITU-R P.372.

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Medium Wave DRM Field Test Results in Urban and Rural Environments

Cited by 31 publications

References 2 publications

Accuracy Analysis of the Millington's Prediction Method in the Medium Waveband

Accuracy Analysis of the Millington's Prediction Method in the Medium Waveband

Medium wave DRM field trials in Brazil – Some daytime and nighttime results in urban environment

Urban indoor signal and noise measurements in the Medium Wave Band

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