“…Suppose that the GBS is equipped with V antennas, while the PR, PB, ST, IDs, and URs are each equipped with a single antenna [13], [26], [27]. For the GBS-PR, ST-PR, ST-UR 1 , UR 1 -PR, UR n -UR n+1 , UR N -D p , UR N -D q , GBS-UR N , GBS-D p , GBS-D p , UR N -E, and GBS-E links, the channel gains are denoted by g GvP , g SP , g SU 1 , g UnU n+1 , g U N Dp , g U N Dp , g GvU N , g GvDp , g GvDq , g U N E , and g GvE , respectively, and the distances are denoted by…”