Performance Evaluation of the Recursive Least Square Algorithm in Electronic Dispersion Compensation

Efficient and low-cost dispersion compensation is necessary to achieve useful transmission distances in optical communication systems at bit rate of 10 Gb/s.In this paper electronic feed forward equalization is performed to mitigate the link chromatic dispersion. The filter coefficients are computed by a decision-directed process based on the recursive least square algorithm. Recursive least square algorithm is computationally more complex than least mean square algorithm since matrix inversion is required, but achieves faster convergence. Therefore, this paper evaluates the performance of recursive least square algorithm in chromatic dispersion compensation at bit rate of 10 Gb/s.