H - Electricity – 03 – H
Patent
H - Electricity
03
H
340/72
H03H 7/30 (2006.01) H04B 7/00 (2006.01)
Patent
CA 1259385
Abstract of the Disclosure The present invention relates to a cross- polarization equalizer/canceler which simultaneously performs cross-polarization equalization/cancellation in a tapped delay line (TPL) 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 IDL, 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.
502952
American Telephone And Telegraph Company
Kirby Eades Gale Baker
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