filters produce the reproduced signals for the intersymbol and the cross polarization interference components which are different from the intersymbol and the cross polarization interference components included in the before equalized and compensated signals when the interference components are great defects are therefore inevitable in the conventional cross polarization interference compensating device such that the cross polarization interference component is insufficiently removed when either the intersymbol or the cross polarization interference component grows large referring now to fig2 the description will proceed to a cross polarization interference compensating device according to a first embodiment of this invention similar parts are designated by like reference numerals it should be noted throughout the following description that transversal filters are sometimes referred to simply as filters and that the filters are identical by modifiers first second third and fourth with the modifiers used in an order which will become clear as the description proceeds this applies to address and delay elements in fig2 a part except for a first equalizer 41 a second equalizer 42 a first cross polarization interference canceller 43 and a second cross polarization interference canceller 44 comprises circuits used in the prior art illustrated with reference to fig1 and is similarly operable further description will therefore be omitted here the first equalizer 41 is supplied with the first before equalized and compensated signal produced by the first a d converter 11 and furthermore with the first decided signal produced by the first decision circuit 21 among transversal filters used in the first equalizer 41 a forward tapped portion a first forward filter ff1 13 is supplied with the before equalized and compensated signal a.