Patent ID: 8462612

Claim:
A method of frequency interleaving symbols that are to be allocated to carriers of a multicarrier transmitter device comprising a module for multiplexing and modulation by N FFT orthogonal functions, the method comprising: encoding binary bits to form modulated data symbols; partitioning the modulated data symbols into blocks of modulated data symbols; obtaining an interleaving law I(k) by selecting a number of iterations j or by selecting parameters p, q of the iterative interleaving algorithm: I o,p,q ( k )=[− k−p·k] K I ( k )= I p,q (j) ( k )=[ K−p+k+q·p·[−k−p·I p,q (j−1) ( k )] K ] K k={ 0 , . . . ,K− 1 },j≧ 1, varying over time the interleaving law generated by modifying over time the number of iterations j or one of the two parameters p and q for a given transmission mode of the multicarrier transmitter device; and interleaving the blocks of K modulated data symbols through application of the obtained time-variable interleaving law.