I'm studying the non-linearity effect of power amplifier on multicarrier signal. While modeling the behavior of power amplifier I came across the following integral; I'm not able to figure out how to solve it.(adsbygoogle = window.adsbygoogle || []).push({});

[tex]I=\frac{A^2}{2\sigma_x^4}\int_{0}^{\infty}\frac{r^3}{r^2+A^2}\exp(\frac{j\pi}{3}\frac{r^2}{r^2+A^2}-\frac{r^2}{2\sigma_x^2})dr[/tex]

Please help me to solve this integral.

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# A complex integral

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