| 解决OFDM信号功率降额问题的子载波预留方法 |
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| 引用本文： | 梁娟,李晓波.解决OFDM信号功率降额问题的子载波预留方法[J].计算机工程与应用,2010,46(12):129-132. |
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| 作者姓名： | 梁娟 李晓波 |
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| 作者单位： | 1.第二炮兵工程学院，西安 710025 2.西北工业大学 电子信息学院，西安 710129 3.中国人民解放军驻沈阳飞机工业（集团）有限公司军事代表室，沈阳 110850 |
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| 摘 要： | 针对OFDM信号功率降额问题，提出了一种新的子载波预留方法。该方法利用谷值补偿算法改善OFDM信号的立方度量性能，并使用动态峰值削减算法降低OFDM信号的峰均功率比，同时对原有迭代过程进行简化，合理地控制计算开销。仿真结果表明，与传统的功率降额处理方法相比，该方法可更为有效地降低系统峰均功率比和改善OFDM信号的立方度量性能。
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| 关 键 词： | 正交频分复用（OFDM） 立方度量 峰均功率比 子载波预留 谷值补偿 动态峰值削减 |
| 收稿时间： | 2008-10-22 |
| 修稿时间： | 2009-1-17
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New tone reservation method for power de-rating in OFDM systems |
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| LIANG Juan,LI Xiao-bo.New tone reservation method for power de-rating in OFDM systems[J].Computer Engineering and Applications,2010,46(12):129-132. |
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| Authors: | LIANG Juan LI Xiao-bo |
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| Affiliation: | 1.The Second Artillery Engineering College，Xi’an 710025，China 2.School of Electronics & Information，Northwestern Polytechnical University，Xi’an 710129，China 3.PLA Military Representative Office in Shenyang Aircraft Corporation，Shenyang 110850，China |
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| Abstract: | A new tone reservation method which can solve the power de-rating problem of OFDM is proposed.This new method uses valley compensation algorithm to decrease the cubic metric and dynamic peak reduction algorithm to reduce the PAPR of OFDM signal.At the same time,the iterative algorithm is improved in order to reduce the computational cost.Simulation results show that this new method can decrease the PAPR and cubic metric effectively compared with the traditional power de-rating methods. |
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| Keywords: | Orthogonal Frequency Division Multiplexing（OFDM） cubic metric Peak to Average Power Ratio（PAPR） tone reser-vation valley compensation dynamic peak reduction |
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