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Communication Dans Un Congrès Année : 2008

Analysis and Performance Comparison of DVB-T and DTMB Systems for Terrestrial Digital TV

Résumé

Orthogonal frequency-division multiplexing (OFDM) is the most popular transmission technology in digital terrestrial broadcasting (DTTB), adopted by many DTTB standards. In this paper, the bit error rate (BER) performance of two DTTB systems, namely cyclic prefix OFDM (CP-OFDM) based DVB-T and time domain synchronous OFDM (TDS-OFDM) based DTMB, is evaluated in different channel conditions. Spectrum utilization and power efficiency are also discussed to demonstrate the transmission overhead of both systems. Simulation results show that the performances of the two systems are much close. Given the same ratio of guard interval (GI), the DVB-T outperforms DTMB in terms of signal to noise ratio (SNR) in Gaussian and Ricean channels, while DTMB behaves better performance in Rayleigh channel in higher code rates and higher orders of constellation thanks to its efficient channel coding and interleaving scheme.
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Dates et versions

hal-00325824 , version 1 (30-09-2008)

Identifiants

Citer

Ming Liu, Matthieu Crussière, Jean-François Hélard, Oudomsack Pierre Pasquero. Analysis and Performance Comparison of DVB-T and DTMB Systems for Terrestrial Digital TV. IEEE International Conference on Communications Systems (ICCS 2008), Nov 2008, Guangzhou, China. page 1399-1404, ISBN: 978-1-4244-2423-8, ⟨10.1109/ICCS.2008.4737413⟩. ⟨hal-00325824⟩
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