Digital predistortion is topic of significant interest in telecommunications – both in the wireless radio field and, more recently, in photonics. In the present letter, the authors undertake a sensitivity analysis of various digital predistortion algorithms. Using recent metamodeling techniques designed for efficient stochastic analysis, the authors show that using predistortion not only leads to a reduction of the error vector magnitude in general but can also make the system less sensitive to uncertainties.

中文翻译：

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CO-OFDM 系统中数字预失真的影响——一种随机方法

数字预失真是电信领域非常感兴趣的话题——无论是在无线电领域，还是在最近的光子学领域。在本信函中，作者对各种数字预失真算法进行了敏感性分析。使用为高效随机分析设计的最新元建模技术，作者表明，使用预失真不仅可以总体上降低误差向量幅度，而且还可以使系统对不确定性不那么敏感。