The present invention relates to a method for transmitting data in the form of at least one sequence Tsg of Ns pulses, each pulse being enclosed within a predetermined time chip Tc.The method according to the invention includes at least one symbol encoding step, in the course of which each pulse pj (for j=1 to Ns) of an ith pulse sequence Tsg is multiplied by a value Vi representative of a symbol to be carried by said sequence.By virtue of the invention, the information carried by the pulse sequence Tsg will essentially be represented by the power carried by this sequence Tsg, which power is related to the amplitude of the pulses pj. This information may then be recovered by a receiver without said receiver having to map precisely, with respect to time, the received pulse sequences.