| 多小波分形调制理论及其性能分析 |
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| 引用本文： | 阎晓红, 张太镒, 陈希, 武林俊. 多小波分形调制理论及其性能分析[J]. 电子与信息学报, 2006, 28(2): 262-266. |
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| 作者姓名： | 阎晓红 张太镒 陈希 武林俊 |
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| 作者单位： | 西安交通大学电子与信息工程学院,西安,710049;西安交通大学电子与信息工程学院,西安,710049;西安交通大学电子与信息工程学院,西安,710049;西安交通大学电子与信息工程学院,西安,710049 |
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| 摘 要： | 该文提出正交多小波分形调制理论，计算了理论功率谱密度和二进数据下的误码率。多小波分形调制在各尺度能够提供更多的子频带，为更多用户服务，具有更高的频带利用率。仿真了其在加性高斯信道、Rayleigh信道和多径信道下的误码率，并利用多小波周期自相关函数分析了系统抗多径干扰能力，更进一步，根据多小波周期自相关函数的过零点数对多小波函数进行正交时移重叠，提高了系统数据速率。
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| 关 键 词： | 分形调制 多小波 频带利用率 周期自相关函数 |
| 文章编号： | 1009-5896（2006）02-0262-05 |
| 收稿时间： | 2005-03-08 |
| 修稿时间： | 2005-08-23 |
Fractal Modulation with Multiwavelets and Its Performance |
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| Yan Xiao-hong, Zhang Tai-yi, Chen Xi, Wu Lin-jun . Fractal Modulation with Multiwavelets and Its Performance[J]. Journal of Electronics & Information Technology, 2006, 28(2): 262-266. |
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| Authors: | Yan Xiao-hong Zhang Tai-yi Chen Xi Wu Lin-jun |
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| Affiliation: | School of Electronics and Information Engineering, Xi’an Jiaotong University, Xi’an 710049, China |
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| Abstract: | Fractal modulation based on multiwavelet is proposed and its power density spectrum is calculated and also its bit error ratio under binary data is calculated. Multiwavelet fractal modulation provides more sub-bands and holds more users at each scale and has much higher band efficiency than that with single wavelet. The bit error rate under additive white Gaussian noise channel, Rayleigh channel and multi-path channel is simulated. The system's anti-multi-path fading ability is analyzed by the periodic auto-correlation function of multiwavelets and wavelets. According to the number of the zero point of the periodic auto-correlation function, the capacity can be improved by orthogonal shift and overlapping in time domain. |
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| Keywords: | Fractal modulation Multiwavelets Band efficiency Periodic auto-correlation function |
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