MEDIUM WAVE DRM FIELD TRIALS IN BRAZIL - DAYTIME RESULTS

M. P. Almeida, R. P. David, R. S. Souza,P. V. G. Castellanos, J. C. Braz, M. V. Lima, F. F. Lima, L. Silva Mello

Abstract

The Digital Radio Mondiale (DRM) system broadcasts audio in the frequency band below 174 MHz [1]. In this experiment, designed to evaluate the DRM system performance in urban areas in Brazil, a hybrid signal composed of an analog AM signal and a digital DRM signal, with the same content, were broadcasted in diurnal and nocturnal transmissions. This paper describes the experimental setup and presents initial results of medium wave propagation measurements campaigns that are being carried out in Brazil. The experiment is part of a series of field trials that are being conducted by the Brazilian Government to evaluate the performance of DRM standard, which includes campaigns at MW, HF and VHF frequency bands in the cities of São Paulo, Rio de Janeiro and Belo Horizonte. The results of São Paulo campaign with Radio Cultura AM are presented in this article.

Keywords

DRM system, AM broadcast, digital radio, medium wave, OFDM

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IMEKO-TC4-2011-061.pdf

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IMEKO TC

TC4 - Measurement of Electrical Quantities

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