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Author: search.filters.author.Ruckveratham, BunditSubject: search.filters.subject.DVB-T2

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    Measurement and Modeling of DTTV–SFN Propagation in Thailand
    (2020-12-01)
    Promwong, Sathaporn
    ;
    Tiengthong, Thanadol
    ;
    Ruckveratham, Bundit
    Digital terrestrial television (DTTV) with a single frequency network (SFN) in Thailand is based on digital video broadcasting-terrestrial second generation (DVB-T2) standard. The signal quality of DTTV–SFN is very important. DVB-T2 is improved from traditional terrestrial television broadcasting technology in term of modulation which is coded orthogonal frequency-division multiplex. Therefore, the performance of DTTV should be study. SFN is a key factor in DVB-T2 technology due to the benefits of SFN. In order to evaluation the DVB-T2 performance, this research had investigated delay characteristics , path loss, and broadcasting reception threshold of DVB-T2 signal. The measurement was done in an overlap area of DTTV–SFN in Thailand. The measurement model was set up to measure the delay time, received signal power, and network quality parameters between guard interval time of three transmitted stations. The results present a comparison of delay characteristics between each received positions and a comparison of path loss between free space case and measurements. An acceptable result of spectrum variation, CNR, MER, and noise margin are presented which have the average value equal to 3.03 dB, 22.62 dB, 7.83 dB, and − 5.54 dB, respectively. The contribution of this research provide a measurement and modeling of DTTV–SFN in Thialand which the results are presented a useful information for optimization and modeling of DTTV–SFN system in Thailand.
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    Evaluation of DTTV Transmission for SFN with Minimum Threshold in Thailand
    (2020-12-01)
    Promwong, Sathaporn
    ;
    Tiengthong, Thanadol
    ;
    Ruckveratham, Bundit
    The digital terrestrial television (DTTV) transmission based on digital video broadcasting-terrestrial second generation (DVB-T2) for a single frequency network (SFN) shall be studied. The DTTV signal performance is very important. Therefore, the performance of DTTV should be studied. SFN is a key factor in DVB-T2 technology due to the benefits of SFN. In order to evaluate the DVB-T2 performance, this research had investigates broadcasting reception threshold of DVB-T2 signal. The experiment was done in a laboratory of Mass Communication Organization of Thailand company, Thailand, and field experiment was done in urban area of Sing Buri, Thailand. The measurement model was set up to measure the the DTTV performance parameter with respected to guard interval delay time of two SFN transmitters. The acceptable result of minimum power, received signal, CNR, MER, and transmission loss are presented. The reliability of the result was validated by using polynomial. The measurement results provided a useful information for optimization and modeling of DTTV broadcasting for SFN system with DVB-T2 in Thailand.
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    Modulation error ratio gain of single frequency network in DVB-T2
    (2019-04-15)
    Promwong, Sathaporn
    ;
    Tiengthong, Thanadol
    ;
    Ruckveratham, Bundit
    DVB-T2 broadcasting with a single frequency network allows an efficient management of frequency utilization and extend the coverage area, which will enable more people to view a broadcast. The SFN mode also increases the concentration of the signal in overlap areas. However, some different of overlap areas in actual use of SFN networks may have some degradation of the received signal due to the effect of the SFN. In this research, we analyze SFN broadcasting in SISO mode. This paper represents the effects of delays on the SFN signal over different delay times within the guard interval by analyzing the minimum reception threshold. The analysis of received signal power, MER, bBER, LBER, and noise margin are studied using an actual digital television transmitter for the experiment. The results show that the minimum thresholds for a delay time at 0 microseconds will require higher receive signal power than other delay times within the GI. The results of this experiment are useful in designing the SFN network and make it possible to determine the appropriate C/N threshold for the design of the digital terrestrial television network.
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    Empirical single frequency network threshold for DVB-T2 based on laboratory experiments
    (2019-01-01)
    Ruckveratham, Bundit
    ;
    Promwong, Sathaporn
    DVB-T2 broadcasting with a single frequency network (SFN) allows an efficient management of frequency utilization and extends the coverage area, which will enable more people to view a broadcast. The SFN mode also increases the concentration of the signal in overlap areas. However, some difference of overlap areas in actual use of SFN networks may have some degradation of the received signal due to the effect of the SFN. In this research, we analyze SFN broadcasting in SISO mode. This paper represents the effects of delays on the SFN signal over different delay times within the guard interval (GI) by analyzing the minimum reception threshold. The analysis of received signal power, MER, bBER, LBER, and noise margin are studied using an actual digital television transmitter for the experiment. The results show that the minimum thresholds for a delay time at 0 microseconds will require higher receive signal power than other delay times within the GI. The results of this experiment are useful in designing the SFN network and make it possible to determine the appropriate C/N threshold for the design of the digital terrestrial television network.
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    A Study of Single Frequency Network for DVB-T2 Base on Measurement Data
    (2018-07-02)
    Ruckveratham, Bundit
    ;
    Phomwong, Sathaporn
    In this research presents laboratory experiments for analyzing the Single Frequency Network transmission of DVB-T2 by using the real transmitter and receiver in the experiment. The main objective of the research was to study the SFN threshold reception for broadcasting by analyzing and evaluating the effects of the delay time between two SFN transmitters within the guard interval time. The results of this laboratory experiment provide the information for customizing the SFN broadcasting system to optimization and design for Single Frequency Network broadcasting system.
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    Evaluation of SFN gain for DVB-T2
    (2017-04-19)
    Ruckveratham, Bundit
    ;
    Promwong, Sathaporn
    The evaluation of power gain and modulation error ratio (MER) gain of Digital Video Broadcasting - Second Generation Terrestrial (DVB-T2) for Single Frequency Network (SFN) is very important for the performance of the receiver. The power gain and MER gain are considered based on the data measurement. However, the quality of service in the SFN area will depend on the number and nature of the received signal (number of transmitters, relative delays, and relative amplitudes). In this paper, we proposed to estimate the reception quality under the SFN environment with the delay spread of two transmitters no longer than the guard interval. The results are useful for estimation and analysis the DVB-T2 Single Frequency Network performance and optimization for DVB-T2 network.
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    Performance evaluation of DVB-T2 propagation for fixed reception
    (2016-09-06)
    Ruckveratham, Bundit
    ;
    Promwong, Sathaporn
    The performance of propagation analysis of DVB-T2 (Digital Video Broadcasting - Second Generation Terrestrial) is very significant for digital television broadcasting. That will analyze the effectiveness of the setting parameters that use for suitable of broadcasting. This paper provides the performance evaluation of DVB-T2 for fixed reception by the received signal measurement. The field measurements were taken in Bangkok of Thailand, along 20 locations. The receiver used to analyze the DVB-T2 signal providing several quality measurements (Power, C/N, MER, BER, constellation diagram, etc.).The results of the study could be useful for the improvement of DVB-T2 broadcast such as transmitter adjustment and gap filler transmitter installation to optimize the efficiency of digital television broadcasting.