IEICE Electronics Express
Online ISSN : 1349-2543
LETTER
Analytical performance evaluation of the OFDM systems passing through nonlinear circuits
M. H. MadaniA. AbdipourA. Mohammadi
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2010 Volume 7 Issue 3 Pages 138-145

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Abstract

This paper presents a new and exact theoretical analysis of performance degradation of OFDM systems due to circuit nonlinearity effects. This nonlinearity is modeled as a fifth order memoryless nonlinear polynomial model. Theoretical analysis shows that the detected data symbol at the receiver consists of attenuated version of the original transmitted data symbol, third and fifth order intermodulation components. Analytical expressions for inter- modulation noise term are derived using combinatorial methods. By use of the derived expressions, a closed form output signal to noise ratio and degradation factor can be evaluated theoretically. The analytical results are compared with simulations outcomes.

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© 2010 by The Institute of Electronics, Information and Communication Engineers
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