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 mathemat...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.展开更多
基金国家自然科学基金( the National Natural Science Foundation of China under Grant No.10361003)广西省自然科学基金( the Natural Science Foundation of Guangxi Province of China under Grant No.0542046) 广西研究生教育创新计划项目 ( Innovation Project Guangxi Graduate Edueation No.2006105950701M03)
基金supported by the National Natural Science Foundation of China (Grant No.60872114)
文摘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.
