Wavelet Packet modulation has been recently attracted many researchers as a mean to achieve high performance in fast wireless communication systems. The performance of wavelet packet modulation can be increased by sending the data over some unused nodes, which are commonly called as virtual terminals, in the wavelet packet tree. In this paper, we propose an efficient algorithm to select the best sub bands for sending data packets and the position of virtual terminals with respect to the characteristics of the channel frequency response. Simulation results show the efficiency of the proposed method for wavelet packet based MC-CDMA systems in comparison with conventional methods.
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