| 一种抑制OFDM系统峰均功率比的融合算法 |
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| 引用本文： | 黄丽贞,贾杰,谢瑶.一种抑制OFDM系统峰均功率比的融合算法[J].燕山大学学报,2011,35(4):355-358. |
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| 作者姓名： | 黄丽贞 贾杰 谢瑶 |
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| 作者单位： | 1. 南昌航空大学信息工程学院,江西南昌 330063;南京航空航天大学航空宇航学院,江苏南京 210016
2. 南京航空航天大学航空宇航学院,江苏南京,210016 |
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| 基金项目： | 航空科学基金资助项目(20080156002);南昌航空大学学校基金资助项目(EC200804157) |
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| 摘 要： | 提出了一种抑制正交频分复用(OFDM)系统峰均功率比(PAPR)的融合算法,该算法在OFDM系统发射端对信号先后进行选择映射(SLM)和压扩变换,从而使信号的峰均比得到二次抑制。仿真结果说明了该算法对峰均比的抑制效果比单独使用SLM技术和压扩技术都有明显的改善,并且对于计算复杂度要求不高的OFDM系统,不同参数的综合技术可相互替代以提高系统的误码性能。
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| 关 键 词： | 正交频分复用 峰均比抑制 选择映射 压扩变换 融合算法 |
A combined scheme for PAPR reduction in OFDM system |
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| HUANG Li-zhen,JIA Jie,XIE Yao.A combined scheme for PAPR reduction in OFDM system[J].Journal of Yanshan University,2011,35(4):355-358. |
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| Authors: | HUANG Li-zhen JIA Jie XIE Yao |
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| Institution: | 1.School of Information Engineering,Nanchang Hangkong University,Nanchang,Jiangxi 330063,China;2.College of Aerospace Engineering,Nanjing University of Aeronautics and Astronauticss,Nanjing,Jiansu 210016,China) |
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| Abstract: | A combined scheme for PAPR(peak-to-average power ratio) reduction in OFDM(orthogonal frequency division multiplexing) system is proposed.The PAPR can be reduced twice by using SLM(selected mapping) technique and compounding technique.Simulation results show this method can get better PAPR performance than using the above techniques alone.In the OFDM system which has not too much requirement in computational complexity,the schemes with different parameters can be replaced each other to obtain better BER performance. |
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| Keywords: | OFDM modulation PAPR reduction SLM companding transform combined scheme |
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