| 摘要 |
The present invention relates to a cross-polarization equalizer/canceler which simultaneously performs cross-polarization equalization/cancellation in a tapped delay line (TDL) matrix. More particularly, the present equalizer/canceler receives the first and second orthogonally polarized digital signals on separate paths which are each split into a straight through and cross-over paths that include a TDL matrix comprising a separate TDL, with a predetermined number of complex taps, in each of the paths. The individual complex taps are appropriately adjusted in response to control signals from a tap adjusting means which derives the appropriate control signals from current tap signals and computed gradients derived from a predetermined algorithm. Accurate data decisions, however, are not needed. The resultant TDL output signals in the merging straight-through and cross-over paths at the output of the TDL matrix are combined to converge each of the polarized signals for propagation along the straight-through paths.
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