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In this paper, the measurement of the signal-to- noise(SNR) threshold of several commercial receivers for digital television/terrestrial multimedia broadcasting (DTMB) system under single frequency network (SFN) environment was carried out in laboratory tests. Based on the measured results, a channel model between the channel capacities under additive white Gaussian noise (AWGN) and multipath channels...
This paper presents a normalized demapping method with application to the digital terrestrial multimedia broadcasting (DTMB) system. Normalized logarithm likelihood ratio (NLLR) soft information is computed using this new method in which a normalization factor is proposed. Two ways of determining this factor are illustrated and simulation results show that it performs well with comparison to other...
Chinese digital television terrestrial broadcasting (DTTB) standard, digital terrestrial/television multimedia broadcasting (DTMB), recommends three padding modes of guard intervals (GI) with PN420/595/945 as training sequences for multi-carrier or single-carrier block transmission. At receiver side, mode detection should be done before subsequent synchronization and channel estimation. Simple and...
Digital terrestrial multimedia/television broadcasting (DTMB), which is the recently released Chinese digital television terrestrial broadcasting (DTTB) standard, uses guard intervals padded with known pseudo-noise (PN) sequences for multi-carrier or single-carrier block transmission. Well designed synchronization algorithms are a prerequisite for achieving high-quality multimedia transmission. In...
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