A wireless relay node (100) comprises a receiving side (110) and a transmitting side (120)
adapted for concurrent reception and transmission of an information stream, and at least one
of the two sides has multiple antennas for multi-antenna operation. In the internal design, the
wireless relay node is further configured (130) for cancelling signal feedback from a multi-
antenna dependent feedback channel from the transmitting side to the receiving side based
on an N× M dimensional filter matrix (135) dependent on the multi-antenna dependent …