METHOD AND DEVICE FOR MODULATING COMPLEX SYMBOLS, DEMODULATION METHOD AND DEVICE AND CORRESPONDING COMPUTER PROGRAMS.

摘要

The invention relates to a method of modulation of complex symbols, delivering a multicarrier signal. According to the invention, such a method implements the following steps, for at least one basic block of NxK complex symbols, with N and K integers such that N 1 and K ≥ 1: - extension (11) of said block base, delivering a block of Nx (2K - 1) elements, said extended block; - phase shift (12) of said extended block, delivering a phase-shifted extended block; - Filtering (13) of said extended phase block, delivering a block of Nx (2K - 1) filtered elements, said filtered block; mapping (14) Nx (2K - 1) filtered elements of said filtered block to MK frequency samples, with M the total number of carriers and M ≥ N; transformation (16) of said MK frequency samples from the frequency domain to the time domain.