Optimal wavelet packet based multicarrier modulation over multipath wireless channels

Multicarrier modulation is a popular technique for wide band communications; over wireless channels, which divides the channel into orthogonal and overlapping subchannels. The main purpose of this paper is to replace the conventional FFT based multicarrier modulation with orthogonal wavelet packet in order to get a more flexible and robust performance. Furthermore, the wavelet packets are optimized in the sense of minimizing the power of intersymbol interference (ISI) and intercarrier interference (ICI). The performance of the optimal wavelet packet based multicarrier modulation system is simulated and compared with the conventional wavelet and FFT based multicarrier modulation systems.