Efficient non-data-aided carrier and clock recovery for satelliteDVB at very low signal-to-noise ratios |
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Authors: | D'Amico AA D'Andrea AN Regiannini R |
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Affiliation: | Dipt. di Ingegneria della Informazione, Pisa Univ. ; |
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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 the 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. We propose and analyze a clock/carrier synchronization scheme capable of operating at values of Eb/N o as low as 1 dB with lock-in delay not exceeding 50 ms |
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