Nouvelles formes d'ondes par paquets d'ondelettes pour les m odulations multiporteuses

The quality of a multicarrier transmission depends directly on the modulating pulse shaping used. In this paper, the Wavelet Packet Modulation (WPM) is applied to wireless communications and a new wavelet based multicarrier modulation is proposed which used complex wavelets. We show that, for a multipath channel transmission, the use of complex wavelet outperforms the use of the real one. We also show that multicarrier systems using the wavelet approach significantly reduces the Peak-to-Average Power Ratio of the transmitted signal. The performances of the WPM are compared with OFDM modulation.