Efficient backward-propagation using wavelet-based filtering for fiber backward-propagation
Abbreviated Journal Title
OPTICAL-PHASE CONJUGATION; COHERENT DETECTION; WDM SYSTEM; COMPENSATION; NONLINEARITY; DISPERSION; PRECOMPENSATION; PREDISTORTION; Optics
With the goal of reducing the number of operations required for digital backward-propagation used for fiber impairment compensation, wavelet-based filtering is presented. The wavelet-based design relies on signal decomposition using time-limited basis functions and hence is more compatible with the dispersion operator, which is also time-limited. This is in comparison with inverse-Fourier filter design which by definition is not time-limited due to the use of harmonic basis functions for signal decomposition. Artificial, after-the-fact windowing may be employed in this case; however only a limited amount of saving in the number of operations can be achieved, compared to the wavelets-base filter design. Wavelet-based filter design procedure and numerical simulations which validate this approach are presented in this paper. (c) 2009 Optical Society of America
"Efficient backward-propagation using wavelet-based filtering for fiber backward-propagation" (2009). Faculty Bibliography 2000s. 1580.