This paper deals with the analysis and design of efficient non-data-aided clock and carrier (frequency/phase) synchronization algorithms intended for use in satellite digital video broadcasting systems employing turbo-coding techniques to enhance power efficiency. The above issue appears quite challenging in view of both the extremely low signal-to-noise ratio, typical of turbo-codes operation, and the very short time allocated to the acquisition of synchronization parameters. These constraints rule out most conventional clock/carrier recovery schemes and demand a careful search for specific, highly efficient algorithms. In the paper, we propose and analyze a clock/carrier synchronization scheme capable of operating at values of 0 as low as 1 dB with lock-in delay not exceeding 50 ms.

Efficient Non-Data-Aided Carrier and Clock Recovery for Satellite DVB at Very Low Signal-to-Noise Ratios

D'AMICO, ANTONIO ALBERTO;D'ANDREA, NUNZIO ALDO;REGGIANNINI, RUGGERO
2001

Abstract

This paper deals with the analysis and design of efficient non-data-aided clock and carrier (frequency/phase) synchronization algorithms intended for use in satellite digital video broadcasting systems employing turbo-coding techniques to enhance power efficiency. The above issue appears quite challenging in view of both the extremely low signal-to-noise ratio, typical of turbo-codes operation, and the very short time allocated to the acquisition of synchronization parameters. These constraints rule out most conventional clock/carrier recovery schemes and demand a careful search for specific, highly efficient algorithms. In the paper, we propose and analyze a clock/carrier synchronization scheme capable of operating at values of 0 as low as 1 dB with lock-in delay not exceeding 50 ms.
D'Amico, ANTONIO ALBERTO; D'Andrea, NUNZIO ALDO; Reggiannini, Ruggero
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11568/177207
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