Experimental Study on Protection Distance between Analog TV and Digital TV in Adjacent UHF Frequency Bands at Terrestrial Television
Keywords:DTT, Digital TV, PAL, Field Strength, Adjacent, Channel Interference, Power Ratio, Bit Error Rate, Carrier to Noise ratio
Office of the National Broadcasting and Telecommunication Commission (NBTC), the Thai governmental organization decided to launch digital broadcasting. The implementation has to carry by the broadcasting license; the digital transmission testing has to carry on broadcasting on channel 30 while the analog television has to broadcast on channel 29. The adjacent channel interference must occur between analog television signal and digital television signal because of 20 MHz spacing between both signals.
This paper proposes the experimental study of testing in order to measure and determining the degradation caused by the analog PAL television signal interferences on the digital television signal. The previous researches have been presented since the beginning of DVB-T broadcasting at several sites by M.N. Sanchez et al.  and M. M. Valez et al. . They carried out the laboratory tests to measure the degradation of the bit error rate (BER) caused by analog PAL TV. The variations of adjacent channel interference with regarding the distance from the base station to determine the quality of the digital signal both in town and out of town.
M. N. SÃ¡nchez, M. A. AcuÃ±a, I. CuiÃ±as, R. M. RodrÃguez-Osorio, de Haro, A. Garcia-Pino, â€œCo channel and adjacent channel interference in actual terrestrial TV scenarios - part I â€“ field measurementsâ€, IEEE Transactions on Broadcasting, Vol. 48, No. 2, pp. 111-115, June 2002.
M. M. Velez, A. Arrinda, , P. Angueira, D. de la Vega, J. L. Ordiales, â€œDVB-T BER measurements in the presence of adjacent channel and co-channel analogue television interferenceâ€, IEEE Transactions on Broadcasting, Vol. 47, No. 1, pp. 80-84, March 2001.
S. Oâ€™Leary, â€œDigital/Analogue Co-channel Protection Ratio Field Measurementsâ€, IEEE Transactions on Broadcasting vol. 44, No. 4, pp.540-546, Dec 1998.
W. Y. Zou, Y. Wu. â€œCOFDM: An Overviewâ€, IEEE Transactions on Broadcasting, Vol. 41, No. 1, March 1995.
A. Arrinda, M.M. Velez, P. Angueira, D. de la Vega, J.L. Ordiales, â€œAdjacent and Co-channel Interference Disturbances from a Digital Terrestrial Television Signal (COFDM-8K System) on Analogue PAL Systemsâ€, IEEE Transactions on Broadcasting, Vol. 45, No. 4 , pp. 392 -399, December 1999.
A. Arrinda, M. Ma Velez, P. Angueira, D. de la Vega, J. L. Ordiales, â€œDigital Terrestrial Television (COFDM 8k System) Field Trials And Coverage Measurements In Spainâ€, IEEE Transaction on Broadcasting, Vol. 45, No. 2, pp. 171-176, December 1999.
ETSI (European Te1ecommunications Standards Institute), digital video broadcasting (DVB), framing structure, channel coding and modulation for digital terrestrial television (DVB-T), ETS 300 744, 1997.
ETSI (European Te1ecommunications Standards Institute), digital video broadcasting (DVB), implementation guidelines for DVB services. Transmission aspects, ETS 101 190, 1997.
Regional radio communication conference for planning of the digital terrestrial broadcasting service (RCC-04), ITU-R Report, Geneva 2004.
Planning criteria for digital terrestrial television Services in the VHF/UHF bands, Rec. ITU-R BT 1368-2, 2000.
CEPT, The Chester 1997 Multilateral coordination agreement relating to technical criteria, coordination principles and procedures for the introduction of terrestrial digital video broadcasting (DVBÂ¬-T), 1997.
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