电信科学 ›› 2012, Vol. 28 ›› Issue (4): 99-104.doi: 10.3969/j.issn.1000-0801.2012.04.022

• 研究与开发 • 上一篇    下一篇

基于降低ISI和ICI的小波分组调制结构的研究

马丹丹1,唐向宏1,2,董庭亮1,栗昆昆1   

  1. 1 杭州电子科技大学通信工程学院 杭州310018
    2 杭州电子科技大学信息工程学院 杭州310018
  • 出版日期:2012-04-15 发布日期:2017-06-14
  • 基金资助:
    浙江省研究生创新科研基金资助项目;浙江省大学生创新创业孵化基金资助项目

Research on Structures of Wavelet Packet Modulation Based ISI and ICI Reduction

Dandan Ma1,Xianghong Tang1,2,Tingliang Dong1,Kunkun Li1   

  1. 1 School of Communication Engineering, Hangzhou Dianzi University, Hangzhou 310018, China
    2 School of Information Engineering, Hangzhou Dianzi University, Hangzhou 310018, China
  • Online:2012-04-15 Published:2017-06-14

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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。

关键词: 小波分组调制, 码间干扰, 载波间干扰, 均方差, 误码率

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.

Key words: wavelet packet modulation, intersymbol interference, intercarrier interference, mean square error, bit error ratio

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