∙ Suitable for digital modulation (QAM, OFDM). ∙ 3rd and 5th order distortion correction. ∙ Iterative Minimum Mean Square Error algorithm. ∙ Complex 3rd and 5th order coefficient estimation and real-time application. ∙ Selectable iterative algorithm convergence speed. ∙ Automatic timing recovery on feedback signal. ∙ Automatic phase recovery on feedback signal. ∙ Automatic forward power control...

Non-linear distortion of OFDM signals can significantly increase the receiver BER. Currently, distortion analyses rely on simulation, not yielding insight into the problem, or apply to specific non-linearities only. In this paper, general analytic results are presented on the errors resulting from distortion. The results are applicable to smooth non-linear distortion of an OFDM signal, which is...

This contribution analyzes non-linear signal distortion in optical OFDM transmission channels. A “weakly non-linear” system approach is used, which treats non-linear signal distortion as additive noise. We review a technique for the separation of observed noise variances into several contributions. Furthermore scenarios are identified for which the compensation of non-linear signal distortion i...