Figure 1From: Transmission strategies with interference coordination in spectrum sharing cognitive radio networks under outage probability constraintSystem model of the SU coexisting with the PU. A simple CR system is considered shown in Figure 1, where one SU link, Â g , and one PU link, Â h , share the same spectrum simultaneously. Both SU-Tx and PU-Tx are equipped with M t transmitting antennas. Both SU-Rx and PU-Rx are each equipped with a single antenna.Back to article page