| 新的低复杂度降低OFDM信号峰均功率比的压缩扩张技术 |
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| 引用本文： | 江涛. 新的低复杂度降低OFDM信号峰均功率比的压缩扩张技术[J]. 电子学报, 2005, 33(7): 1218-1221 |
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| 作者姓名： | 江涛 |
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| 作者单位： | 华中科技大学电子与信息工程系,武汉,430074 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 本文提出了一种新的降低OFDM信号峰均功率比的压缩扩张技术.文中通过与传统压缩扩张技术的对比,详细介绍了新压缩扩张技术的方法和计算复杂度、并从统计角度分析了对峰均功率比及其用于OFDM系统时对系统误比特率的改善等方面的性能.数值仿真说明,与传统压缩扩张技术相比较,新压缩扩张技术不仅具有更低的计算复杂度,而且可以获得更为高效的性能增益.
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| 关 键 词： | 低复杂度 压缩扩张技术 正交频分复用 峰均功率比 |
| 文章编号： | 0372-2112（2005）07-1218-04 |
| 收稿时间： | 2004-12-18 |
| 修稿时间： | 2004-12-182004-08-26 |
New and Low Complexity Companding Technique for Reducing Peak-to-Average Power Ratio of OFDM Signals |
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| JIANG Tao. New and Low Complexity Companding Technique for Reducing Peak-to-Average Power Ratio of OFDM Signals[J]. Acta Electronica Sinica, 2005, 33(7): 1218-1221 |
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| Authors: | JIANG Tao |
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| Affiliation: | Department of Electronics and Information Engineering,Huazhong University of Science and Technology,Wuhan,Hubei 430074,China |
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| Abstract: | A new companding scheme is proposed to reduce the Peak-to-Average Power Ratio (PAPR) of Orthogonal Frequency Division Multiplexing (OFDM) signals.The characteristics and performance of system with conventional and new companding scheme are compared.The proposed scheme is illustrated in detail and analyzed in terms of reducing PAPR,computational complexity and improvement in BER performance in OFDM system.Our simulation results confirm that the suggested scheme exhibits a good ability to reduce PAPR and can outperform with lower computational complexity than conventional companding scheme substantially. |
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| Keywords: | lower complexity companding transform OFDM PAPR |
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