The cdf of SINR per PRB of the backhaul links of MNs. For MRC and IRC, four antennas are used at the receiver. The detailed parameters used for this plot are given in Section 7. The solid black line is the SINR when no ICIC schemes are used. The dash-dot blue line is the SINR when MRC is used. The dashed purple line is the SINR when the number of ABSs is 30% at the macro sectors. The dotted red link is the SINR when IRC is used.