Device and method for the preparation of pilot symbols for channel estimation by means of adaptive low-pass filtering

The apparatus (10; 21) for the preparation of pilot symbols (110) for channel estimation, wherein the pilot symbols (110) were sent from a base station and received by a mobile device and the pilot symbols (110) are known to the mobile radio device, with a low-pass filter means (11, 12, 13, 14) (for filtering the received pilot symbols 110), wherein the setting of the low-pass filter means (11, 12, 13, 14) on the relative speed of the mobile device towards the base station and in particular on the receiver side present signal-to-noise ratio depends characterized, - that the low-pass filter means (11, 12, 13, 14) comprises one of the received pilot symbols (110) fed in series with a plurality of low-pass filter units (11, 12, 13, 14), each low-pass filter unit (11, 12, 13, 14 ), a tap is connected downstream to read out the filtered pilot symbols, and wherein the selection takes place of the tap of the filtered pilot symbols depending on the relative speed of the mobile device.