Filter group multicarrier signal transmission and channel estimation method and device thereof

The invention provides a method for transmitting a signal in a transmitter of a filter group multicarrier system. The method comprises the following steps of modulating data to obtain the modulated data, carrying out framing on a pilot preamble symbol and the modulated data to obtain a signal to be transmitted, and transmitting the signal to be transmitted, wherein the pilot preamble symbol is formed by a preamble code element, and the pilot preamble symbol corresponding to each transmission antenna occupies one filter group multicarrier system modulation symbol. The invention also provides a device for realizing the method and a channel estimation method and device corresponding to the signal transmission method.