| 小波包跳频通信系统的性能分析 |
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| 引用本文： | 郑琴,唐向宏,孙振亚.小波包跳频通信系统的性能分析[J].信号处理,2016,32(1):105-112. |
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| 作者姓名： | 郑琴 唐向宏 孙振亚 |
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| 作者单位： | 杭州电子科技大学通信工程学院 |
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| 基金项目： | 国家自然科学基金资助项目（61271214）；杭州电子科技大学研究生科研创新基金项目（ZX130702308007） |
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| 摘 要： | 介绍了将小波包调制（WPM）技术与跳频技术相结合的高效通信方式，即小波包跳频（WPM-FH）通信系统。利用特征函数法分析和推导了系统在高斯信道、瑞利衰落信道下的误码性能，给出了用户数，跳频点数及子信道数与系统性能之间的关系。理论分析和实验仿真表明，该系统不仅保持了小波包调制技术的优点，提高了频谱利用率，且具有较好的抗多径衰落和抗干扰能力，较好地改善了通信系统性能。同时，为了进一步改善多径衰落对系统性能的影响，在接收端加入了自适应均衡技术，实验结果表明系统性能得到了一定的提高。
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| 关 键 词： | 小波包调制 跳频 特征函数 高斯信道 瑞利衰落信道 |
| 收稿时间： | 2015-04-20 |
Performance Analysis of Wavelet Packet Frequency Hopping System |
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| Affiliation: | School of Communication Engineering, Hangzhou Dianzi University |
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| Abstract: | An efficient communication system was introduced in the paper, which combined wavelet packet modulation (WPM) technology and frequency hopping technology together. Namely wavelet packet modulation frequency hopping (WPM-FH) system. The system BER performance was derived by means of characteristic function over Gaussian channel and Rayleigh fading channel respectively. The relationship between the number of users, the number of hopping points, the number of subcarriers and system performance was showed in paper. Theoretical analysis and simulation results indicate that the system maintain the advantages of wavelet packet modulation to improve the spectrum utilization. And the system has better resistance to multipath fading and anti-interference ability, the system performance is improved well.For better performance of the system in multipath fading channel, the adaptive equalization technique was introduced into the receiver , and the simulation results show that the system BER performance has been improved correspondly. |
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