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Author: search.filters.author.Chaisang, AditepSubject: search.filters.subject.DVB-T2

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    Experimental evaluation scheme of DTTV propagation loss in Thailand
    (2019-07-01)
    Promwong, Sathaporn
    ;
    Tiengthong, Thanadol
    ;
    Chaisang, Aditep
    ;
    Rangsanseri, Yuttapong
    Digital terrestrial television (DTTV) propagation loss should be known characteristics of DTTV propagation channels. In Thailand used DVB-T2 standard for broadcast television channel which shell be study. DTTV propagation loss based in measurement data with system design and analysis of DTTV parameters are importance. In order to predict the result of the broadcast of DVB-T2 in Pathumthani, Thailand, the Hata propagation model is used as the calibration and optimization method for the measurement results. The measurement of the DVB-T2 signal which broadcast from transmitted station are collect as the source of research data. Two broadcast channels were sampling as the broadcasting frequency in this research, i.e., 626 MHz (CH40) and 658 MHz (CH44). The separated distance between transmitted station and received antenna were in range of 2 km. to 7 km. The least square method is use as the optimized propagation model of DVB-T2 signal. The mean error and root mean square error are use as the statistical value for the calibrated model, while relative error is use to indicate the comparison of model component. In the DTTV propagation channel analysis, the root means square error and the optimized method of calibrated model has relative error higher than the calibrated model with mean error. From the results, it shows that the calibrated model of Hata propagation model with mean error is suitable for predict DTTV propagation loss in urban area of Thailand.
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    DVB-T2 Transmission Model in Bangkok Thailand with 626 MHz for DTT
    (2018-08-21)
    Chaisang, Aditep
    ;
    Promwong, Sathaporn
    Digital television terrestrial (DTT) of Thailand used digital video broadcasting terrestrial 2nd generation (DVB-T2). The DVB-T2 transmission loss should be knowing and study. However the DVB-T2 propagation channels performance is very importance for Thailand. This paper evaluation of DVB-T2 propagation channel base on measurement data. In the experimental study of DVB-T2 propagation channel in Bangkok environment for DTT network for portable in urban areas in Bangkok Thailand at MCOT channel 40 at the frequency 626MHz. In these results to evaluate the power loss, probability density function (pdf), commutative distribution function (cdf).