Estimation Schemes of OFDM Integer Frequency Offset for DVB-T Systems
نویسندگان
چکیده
In this paper, we propose two estimation schemes of orthogonal frequency division multiplexing (OFDM) integer frequency offset (IFO) for digital video broadcasting-terrestrial (DVB-T) systems. In the conventional scheme, the decision variable is based on the limited number of the correlations and ratios of pilots of the received samples, and thus, the decision variable contains only a small portion of the signal energy, resulting in performance degradation. On the other hand, the propose schemes combine the correlations and ratios of pilots of the received samples efficiently. Numerical results demonstrate that the proposed schemes provide a better performance compared with that of the conventional scheme in terms of the correct estimation probability. Keywords—DVB-T, estimation, IFO, OFDM, pilot.
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