| 摘要 |
<p>The binary signals that are to be transmitted are associated with elementary components (x(n,k)) belonging to a predetermined constellation, are grouped and modulated upon N orthogonal carriers constituting OFDM symbols, preceded by a guard interval, and transmitted over a transmissive channel. The output signal from the channel are demodulated into their elementary components (y(n,k)), are equalized by dividing them by respective complex values (H/ ANd (n,k)) constituting estimates of the channel transfer function with respect to the respective carriers before bein reconverted into binary signals. The estimates of the channel transfer function (H/ ANd (n,k)) are filtered in the frequency domain with an equivalent "bandwidth" broader that the time duration of the guard interval. <IMAGE></p> |
