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降低电力线正交频分复用系统峰均比的方法 被引量：3

Peak-to-average Power Ratio Reduction Scheme for Orthogonal Frequency Division Multiplexing System in Power Line Communication Channels
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摘要 针对比例选择映射法的峰均功率比(peak-to-average power ratio,PAPR)高于传统选择映射方法的缺点,提出了一种改进方法。这种方法通过规定新的判决准则,将部分输入信号进行缩小运算,从而达到了进一步降低电力线通信正交频分复用(orthogonal frequency division multiplexing,OFDM)系统PAPR的目的。分析及仿真结果表明,在保证系统的误比特率(bit error rate,BER)性能的前提下,与原比例选择映射法相比,改进后的方法能够进一步降低系统的PAPR,它具有算法简单、发送效率高且易于与其他电力线通信信道降低PAPR的技术结合使用等特点,在电力线信道中具有较好的实用价值。 Because of the shortcoming that the peak-to- average power ratio （PAPR） based on scaled selective mapping （SLM） is larger than that of conventional SLM, an improved scheme is proposed. In the scheme, some of the input signals are scaled to low amplitudes by new decision circle to reduce PAPR of orthogonal frequency division multiplexing （OFDM） in power line communications （PLC）. Based on ensuring the performance of bit error rate （BER） in PLC channels, the analysis and simulation results show that the modified scheme can reduce much more PAPR compared with the original scaled SLM scheme. The proposed scheme is simple, and the transmission efficiency is high. It is also convenient to be combined with other techniques in PLC and valuable to be applied.
作者 肖丽萍 韩平
机构地区 燕山大学信息科学与工程学院
出处 《中国电机工程学报》 EI CSCD 北大核心 2011年第4期99-103,共5页 Proceedings of the CSEE
关键词 电力线通信 正交频分复用:峰均功率比 比例选择映射 误比特率 权值相位 power line communication orthogonal frequency division multiplexing （OFDM） peak-to-average power ratio （PAPR） scaled selective mapping bit error rate （BER） weighted phase
分类号 TN911.7 [电子电信—通信与信息系统] TM73 [电气工程—电力系统及自动化]
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参考文献22

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共引文献1

同被引文献30

  • 1何湘宁,王睿驰,吴建德,李武华.电力电子变换的信息特性与电能离散数字化到智能化的信息调控技术[J].中国电机工程学报,2020,40(5):1579-1587. 被引量：15
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引证文献3

二级引证文献12

中国电机工程学报
2011年 第4期

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