and a spectral efficiency of 4 bits/s/Hz. ABER for node 1 using the interference-unaware detector withand node 2 with a varying. Dashed lines denote simulation results for node 1 while solid lines denote the analytical upper bound. Since the analytical bound is asymptotically tight, at low ABER the dashed and solid lines overlap. Each constant value dashed-dot line with ‘+’ markers corresponds to the asymptote derived in (34) using (40) for the different values of.