“…The antenna number of those secondary users is equally set to 2, i.e., m j = n j = 2 for ∀j ∈ J , while that of the primary receiver's is also 2, i.e., u = 2. The relative distance between any transmitter T x j and its desired receiver Rx j in the group, dist(j, j), is stable at 40m, while the relative distance between any secondary transmitter and the primary receiver, or between any undesired secondary pair, dist(j, i) for any j ̸ = i, are uniformly randomly generated over [40,160](m). In the second case, we consider another MIMO CR-enabled vehicular network consisting of 10 pairs of secondary users all equipped with 3 antennas and one primary receiver whose antenna number is also 3.…”