| 一种低复杂度的正六边形星座信号的解调算法 |
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| 引用本文： | 卜祥元,唐平,张黎,梁丹丹.一种低复杂度的正六边形星座信号的解调算法[J].北京邮电大学学报,2015,38(2):16. |
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| 作者姓名： | 卜祥元 唐平 张黎 梁丹丹 |
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| 作者单位： | 北京理工大学 信息与电子学院, 北京 100081 |
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| 基金项目： | 民用航天项目(3050020441401) |
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| 摘 要： | 针对正六边形星座调制信号(HSC)解调算法未达最优,提出了一种基于非正交矢量投影的HSC低复杂度解调算法. 在典型正六边形星座结构的基础上,分析计算了正六边形信号矢量的投影系数和算法的运算复杂度,研究了噪声对接收信号的影响,并结合高斯-勒让德数值分析方法给出了信噪比门限. 结果表明,该解调算法正确运行的复杂度约为基向量投影解调算法的30%.
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| 关 键 词： | 正六边形星座调制信号 解调算法 运算复杂度 信噪比门限 高斯-勒让德算法 |
| 收稿时间： | 2014-04-23 |
Low-Complexity Demodulation Algorithm of Hexagonal Signal Constellation |
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| BU Xiang-yuan,TANG Ping,ZHANG Li,LIANG Dan-dan.Low-Complexity Demodulation Algorithm of Hexagonal Signal Constellation[J].Journal of Beijing University of Posts and Telecommunications,2015,38(2):16. |
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| Authors: | BU Xiang-yuan TANG Ping ZHANG Li LIANG Dan-dan |
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| Affiliation: | School of Information and Electronics, Beijing Institute of Technology, Beijing 100081, China |
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| Abstract: | Considering that hexagonal signal constellation (HSC) demodulation algorithm is not optimal, a low-complexity demodulation algorithm of HSC based on non-orthogonal vectors projection was proposed. On the basis of overview of the typical hexagonal constellation structure, the projection coefficients of hexagonal signal vectors and computational complexity of the algorithm were analyzed and calculated. The effect of noise on the received signal was researched and the signal to noise ratio thresholds were given combined with Gauss-Legendre numerical analysis method. It is shown that the demodulation algorithm is only about 30% of base vector projection demodulation algorithm in terms of computational complexity when it performs effectively. |
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| Keywords: | hexagonal signal constellation demodulation algorithm computational complexity signal to noise ratio threshold Gauss-Legendre algorithm |
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