| 超混沌序列对DS-UWB多址性能的改善 |
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| 引用本文： | 何海莲,王光义.超混沌序列对DS-UWB多址性能的改善[J].通信技术,2009,42(1):36-38. |
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| 作者姓名： | 何海莲 王光义 |
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| 作者单位： | 杭州电子科技大学电子信息学院,浙江,杭州,310018 |
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| 摘 要： | 利用Roessler超混沌系统构造了一种新的超混沌序列，分析了序列的相关特性，并将其应用于直接序列超宽带（DS—UWB）系统中，以提高它的误码性能。建立了DS-UWB通信系统的模型，以超混沌序列作地址码对高斯白噪声信道中多用户DS—UWB系统误码率进行了分析，并将其与m序列作地址码时的相应性能进行了比较。由分析和仿真可知，构造的新的超混沌序列能较好地改善DS-UWB的多址性能。
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| 关 键 词： | 超宽带技术 超混沌序列 误码率 |
Improvement on Multiple Access Performance in DS-UWB by Using Hyperchaotic Sequence |
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| HE Hai-lian,WANG Guang-yi.Improvement on Multiple Access Performance in DS-UWB by Using Hyperchaotic Sequence[J].Communications Technology,2009,42(1):36-38. |
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| Authors: | HE Hai-lian WANG Guang-yi |
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| Affiliation: | (School of Electronics Information, Hangzhou Dianzi University, Hangzhou Zhejiang 310018, China) |
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| Abstract: | In this paper, a new hyperchaotic sequence by using Rgssler hyperchaotic system is constructed and the correlation properties of the sequence analyzed. This sequence is applied in the direct sequence ultra-wideband （DS-UWB） systems, thus to enhance the performance of its bit error rate （BER）. The model of DS-UWB communication system with the Gaussian white noise channel is established for analyzing its bit error rate while taking the hyperchaotic sequence as its address code. The ana]ysis results are compared with the performances of communication system with the m sequence as its address code. The analysis and simulation indicate that the new hyperchaotic sequence can improve the performance of multiple accesses DS-UWB. |
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| Keywords: | Ultra-wide-band （UWB） hyperchaotic sequence bit error rate （BER） |
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