Study of the outage probability of the multiply-detected macrodiversity scheme

In this paper, the outage probability of the "multiply-detected macrodiversity (MDM)" scheme is studied. The previously introduced MDM scheme is a non-selection based, postdetection combining scheme, which employs a maximum likelihood decision algorithm on signals received at a number of base-stations. Previously published performance results indicate that the MDM scheme considerably outperforms other conventional forms of macrodiversity throughout a large portion of the cell area. In this paper, we analyze and simulate the outage performance of the MDM scheme and compare those with the (S/I)-diversity scheme. As a point of reference, if the outage probability is defined as BER above 0.0001, the outage is eliminated at least 45% of the time as compared with (S/I)-diversity, for propagation attenuation exponent of 4 and shadowing standard deviation of 4 dB.