To solve the inter carrier interference(ICI) elimination problem of an M-band wavelet multi-carrier modulation system,this paper analyzes the principle of the ICI caused by the Doppler frequency shift and its mathematical expression based on the M-band wavelet multi-carrier modulation system model.Through the analysis of the mathematical expression and combining with the perfect reconstruction conditions of the filter banks,we propose the design conditions of an M-band filter to reduce and eliminate the ICI.The impulse response model of the filter design conditions and an iterative algorithm is also established.The simulation results show that the proposed ICI reduction and elimination methods can effiectively improve the system performance.
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