Abstract：Using the self orthogonality for the non-zero translation of wavelet functions,an orthogonal wavelet packet multiplexing( OWPM) system efficiently avoids inter-symbol interference and inter-channel interference. Compared with an orthogonal frequency division multiplexing( OFDM) system,an OWPM system has obtained higher spectrum efficiency and anti-jamming performance. Lifting scheme is a kind of algorithm for fast wavelet transform,which can be carried out in situ,and the computational complexity of lifting algorithm is reduced by half than that of the classical Mallat algorithm. In this paper,an OWPM system based on lifting theory is researched,and the system improves computation efficiency and saves memory space. The paper gives the bit error rate of a lifting wavelet packet multiplexing system under different channels and compares the performance of this system with that of Mallat-algorithm based an OWPM system and an orthogonal frequency division multiplexing( OFDM) system. Simulation results conform the feasibility and practical value of the system.

Keyword：orthogonal wavelet packet multiplexing system;orthogonal frequency division multiplexing;lifting scheme;wavelet packet transform;