A method for transmitting a bit sequence to be transmitted at a frequency fb. A set of codes is determined in advance, wherein each code is associated with a possible value from a block of Nb bits, and each code includes an ordered set of Ns binary symbols intended to be transmitted at a frequency fs. The method includes splitting the bit sequence into N blocks of Nb bits, the frequency fs and the numbers N and Nb being selected such that Ns×fb=N×Nb×fs, associating a code with each of the N blocks according to the value from the blocks, interleaving the binary symbols of the N codes respectively corresponding to the N blocks of bits to be transmitted, the interleaved binary symbols being transmitted at a frequency fc such that N×fs=fc.