Title :
Advanced Iterative Symbol Timing Recovery for Mobile DVB-RCS
Author :
Casadei, Marika ; Cioni, Stefano ; Corazza, Giovanni E.
Author_Institution :
DEIS/ARCES, Bologna Univ.
Abstract :
In this paper the symbol timing estimation problem is addressed for bursty transmission in mobile satellite communications. In particular, a classical approach and iterative techniques are compared in terms of estimation performance. The iterative techniques are based on the expectation-maximization approach and they exploit the soft a-posteriori data information delivered by the iterative decoder in order to aid the synchronization process. A new iterative approach is here proposed with the aim to overcome the biased results observed on exiting algorithms for large timing offset values.
Keywords :
digital video broadcasting; direct broadcasting by satellite; expectation-maximisation algorithm; iterative decoding; mobile satellite communication; advanced iterative symbol timing recovery; bursty transmission; expectation-maximization approach; iterative decoder; mobile DVB-RCS; mobile satellite communications; symbol timing estimation problem; Delay estimation; Digital video broadcasting; Frequency synchronization; Iterative algorithms; Iterative decoding; Iterative methods; Parameter estimation; Satellite broadcasting; Satellite communication; Timing;
Conference_Titel :
Vehicular Technology Conference, 2007. VTC2007-Spring. IEEE 65th
Conference_Location :
Dublin
Print_ISBN :
1-4244-0266-2
DOI :
10.1109/VETECS.2007.298