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OFDM/CDMA峰值受限非线性的一种新处理方法

DOI: 10.13190/jbupt.200605.45.wangj, PP. 45-49

Keywords: 正交频分复用,码分多址,峰值受限非线性,冲激噪声

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Abstract:

提出了研究正交频分复用(OFDM)信号通过高功率放大器产生的带内非线性畸变的一种新方法。与广泛使用的将畸变近似成加性高斯噪声相比,这种新方法应用了平稳高斯过程的高电平渡越特性和散射噪声理论,可以深刻了解削峰畸变的本质、由削峰产生的冲激噪声的详细信息以及它们对于OFDM系统性能的影响。提出的方法还可以用于研究具有较高峰均比和峰值受限非线性的通信系统,并用于大容量码分多址(DS-CDMA)系统下行链路的性能分析等。

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