??? A ??? B ??? ??? s = ??? A ??? A B ??? A A ??? B B ??? B ??? ??? h g ??? , where s contains the input samples during the desired training-sequence window (26???5+1=22 as described previously), A (N???Lh) and B (N???Lg) are the desired-signal and interferer data-sequence convolution matrices (A is known and constant, B is an estimate for the interferer), and h and g are the desired-signal and in