| 基于均匀设计的选择性映射旋转向量序列生成算法 |
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| 引用本文： | 王可,郝久玉,王蕾,李惠敏.基于均匀设计的选择性映射旋转向量序列生成算法[J].天津大学学报(自然科学与工程技术版),2008,41(3):311-314. |
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| 作者姓名： | 王可 郝久玉 王蕾 李惠敏 |
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| 作者单位： | [1]天津大学电子信息工程学院,天津300072 [2]大庆油田有限责任公司第二采油厂,大庆163000 |
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| 基金项目： | 天津市科技攻关培育基金
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天津市自然科学基金 |
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| 摘 要： | 选择性映射（SLM）技术中的相位旋转向量是影响其性能的关键因素．通过对SLM旋转向量的分析，提出了一种旋转向量序列生成算法．该算法引入了部分因子设计，通过查均匀表生成旋转向量矩阵，简单且易于实现．仿真结果表明，与传统SLM算法相比，该算法不增加任何系统复杂度，在子载波数为16，峰均功率比门限值为4．5dB时获得了0．25dB的性能改进．对于子载波数较多（如1024）的环境，该算法依然有效．
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| 关 键 词： | 正交频分复用 峰均功率比 选择性映射 部分因子设计 |
Generation Algorithm of Rotation Vector Sequences in SLM Based on Uniform Design |
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| WANG Ke,HAO Jiu-yu,WANG Lei,LI Hui-min.Generation Algorithm of Rotation Vector Sequences in SLM Based on Uniform Design[J].Journal of Tianjin University(Science and Technology),2008,41(3):311-314. |
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| Authors: | WANG Ke HAO Jiu-yu WANG Lei LI Hui-min |
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| Institution: | WANG Ke, HAO Jiu-yu, WANG Lei, LI Hui-min( School of Electronic Information Engineering, Tianjin University, Tianjin 300072, China 2. No. 2 Oil Production Company of Daqing Oilfield Corporation Limited, Daqing 163000, China) |
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| Abstract: | The rotation vector is a key factor on selected mapping （SLM） performance. By investigating the rotation vector in SLM, a generation algorithm of rotation vector sequence was proposed. The algorithm introduced fractional factor design. The target rotation vector matrix can be generated by using a uniform table, which made the proposed algorithm simple and easy. Simulation results showed that the system complexity has not any increase compared with traditional algorithm, When the number of sub-carriers was 16 and the selected peak-to-average power ratio （PAPR） threshold was 4.5 dB, PAPR of the algorithm improved about 0.25 dB. The algorithm is still effective when the number of sub-carriers is large （such as 1 024）. |
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| Keywords: | orthogonal frequency division multiplexing （OFDM） peak-to-average power ratio （PAPR） selected mapping （SLM） fractional factorial design |
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