| 基于降低ISI和ICI的小波分组调制结构的研究 |
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| 引用本文： | 马丹丹,唐向宏,董庭亮,栗昆昆.基于降低ISI和ICI的小波分组调制结构的研究[J].电信科学,2012,28(4):99-104. |
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| 作者姓名： | 马丹丹 唐向宏 董庭亮 栗昆昆 |
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| 作者单位： | 1. 杭州电子科技大学通信工程学院 杭州310018
2. 杭州电子科技大学通信工程学院 杭州310018;杭州电子科技大学信息工程学院 杭州310018 |
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| 基金项目： | 浙江省研究生创新科研基金资助项目(No.YK2009054);浙江省大学生创新创业孵化基金资助项目(No.R407068) |
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| 摘 要： | 从降低误码率和系统复杂度的角度,探讨了基于降低ISI和ICI的小波分组调制结构的优化方法。首先考虑小波分组调制结构本身对调制信号性能的影响,粗选出具有较小ISI和ICI的结构,然后考虑无线信道对调制信号的影响,利用最小均方误差方法,进一步优选出与信道相匹配的树结构,从而实现小波分组调制结构优化的目的。仿真结果表明,所选择的小波分组树结构更加简单,降低了系统的复杂度,同时提高了小波分组调制系统的抗干扰性能。
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| 关 键 词： | 小波分组调制 码间干扰 载波间干扰 均方差 误码率 |
Research on Structures of Wavelet Packet Modulation Based ISI and ICI Reduction |
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| Ma Dandan
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Tang Xianghong
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Dong Tingliang
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Li Kunkun.Research on Structures of Wavelet Packet Modulation Based ISI and ICI Reduction[J].Telecommunications Science,2012,28(4):99-104. |
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| Authors: | Ma Dandan Tang Xianghong Dong Tingliang Li Kunkun |
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| Affiliation: | 1(1.School of Communication Engineering,Hangzhou Dianzi University,Hangzhou 310018,China; 2.School of Information Engineering,Hangzhou Dianzi University,Hangzhou 310018,China) |
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| Abstract: | The optimal tree structure is searched to reduce the sum of ISI and ICI powers(integrated power) from the points of bit error rate(BER) performance and lower complexity.Firstly,to select the lower integrated power structures from all wavelet packet trees,based on the effect of wavelet packet modulation structures in themselves,then,calculate the mean square error of signal modulated by the lower integrated power structures,the optimal wavelet packet tree could be decided.The simulation results show that this optimum wavelet packet tree has simple structure and good BER performance. |
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| Keywords: | wavelet packet modulation intersymbol interference intercarrier interference mean square error bit error ratio |
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