The Performances of Generalized Selection Combiner in the Presence of Log-Normal Fading

In this paper, the performances of generalized selection combining (GSC) will be observed. Combiner has three inputs. The two strongest signals are isolated and added. For this combiner the probability density function for the output signal, characteristic function and moments for the output signals will be derived and the error probability for BPSK modulation will be determined when log-normal fading is present at the input. The error probability curves will be presented.