| 基于直接扩频的多小波包调制 |
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| 引用本文： | 邵小小,田津强,唐向宏.基于直接扩频的多小波包调制[J].杭州电子科技大学学报,2007,27(1):38-41. |
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| 作者姓名： | 邵小小 田津强 唐向宏 |
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| 作者单位： | 杭州电子科技大学通信工程学院,浙江,杭州,310018 |
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| 摘 要： | 在每一种新的数字调制技术设计中,带宽利用率与抗多径衰落能力是两个重要的因素.为了提高带宽利用率,有效地对抗码间干扰,该文利用多小波包调制和直扩技术的特点,提出了一种基于直扩技术的多小波包调制,即直扩-多小波包调制.该文分析了直扩-多小波包调制方式在平坦衰落信道下的系统性能.实验仿真结果表明,直扩-多小波包调制系统比多小波包调制系统和小波包调制系统具有更好的性能.
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| 关 键 词： | 多小波包变换 多小波包调制 直接序列扩频 直接扩频 小波包调制 Based Modulation 调制系统 仿真结果 实验 性能 平坦衰落信道 调制方式 多小波包 分析 直扩技术 提高带宽利用率 抗码间干扰 因素 能力 抗多径衰落 技术设计 数字调制 |
| 文章编号： | 1001-9146（2007）01-0038-04 |
| 收稿时间： | 2006-09-11 |
| 修稿时间： | 2006-09-11 |
A Multi- wavelet Packets Modulation Based on DS - SS |
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| SHAO Xiao-xiao,TIAN Jin-qiang,TANG Xiang-hong.A Multi- wavelet Packets Modulation Based on DS - SS[J].Journal of Hangzhou Dianzi University,2007,27(1):38-41. |
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| Authors: | SHAO Xiao-xiao TIAN Jin-qiang TANG Xiang-hong |
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| Affiliation: | School of Coommunication Engineering, Hangzhou Dianzi University,Hangzhou Zhejiang 310018, China |
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| Abstract: | In every design of new digital modulation scheme,the bandwidth efficiency and ability to combat the multi-path interference are the two most important issues.In order to improve the efficiency of the bandwidth utilization and to combat the inter symbol interference(ISI) effectively,a new multi-wavelet packets modulation based on DS-SS is proposed in this paper,using the characteristics of the multi-wavelet packets modulation(MWPM) and the direct sequence spread spectrum technique(DS-SS).The performance of the DS-MWPM system in flat Rayleigh fading channel is analyzed and simulated using Monte Carlo methods.The simulation results demonstrate the bit error rate performance of DS-MWPM system is better than the MWPM system and the wavelet packet modulation system in the flat Rayleigh fading channel. |
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| Keywords: | multi - wavelet packets transform multi- wavelet packets modulation direct sequence spread spectrum |
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