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幅值压扩降低OFDM信号峰均比方法研究 被引量:1

Amplitude companding method for PAPR reduction of OFDM signals
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摘要 传统的正交频分复用系统因其高峰值特性,在其信号经过放大器时会产生较大的非线性失真,从而影响系统的工作效率。本文针对正交频分复用系统的高峰值,提出了一种基于大信号幅值压扩从而降低OFDM信号峰均比的方法。系统仿真验证了本方法的有效性,且与其他同类方法相比,本方法具有更低的误码率与更好的抑制高峰值效果。 High peak to average power ratio reduces the efficiency of the orthogonal frequency division multiplexing(OFDM)system and produces more nonlinear distortion,especially in the presence of power amplifier.In this paper,a new companding method is proposed to reduce the PAPR of OFDM signals.System simulation verifies the effectiveness of this method.Compared with other PAPR methods,our method has lower error rate and better suppression of peak value.
作者 时恒心 赵祥模 侯俊 SHI Hengxin;ZHAO Xiangmo;HOU Jun(School of Information Engineering,Department of IoT and Networking,Chang’an University,Xi’an 710064,China)
出处 《中国科技论文》 CAS 北大核心 2018年第20期2353-2356,共4页 China Sciencepaper
基金 国家自然科学基金资助项目(61501058) 陕西自然科学基金资助项目(2016JQ6011)
关键词 正交频分复用系统 峰均比 幅值压扩 非线性失真 OFDM PAPR amplitude companding nonlinear distortion
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