Outage performance of the distributed antenna systems in a composite fading channel

We define a generalized distributed antenna system (GDAS) as one that has a total N distributed antenna ports scattered around the cell, each port having L micro-diversity antennas, and all NL antennas have a separate feeder to the base station where the signals are combined. We investigate the effect of macroscopic and microscopic diversity of the proposed system on outage SNR performance and compare with the conventional architectures through analysis and simulation under a composite fading channel. This composite channel approach addresses both macroscopic and microscopic fading, modeled as log-normal and Rayleigh, respectively. These comparative results demonstrate how overall performance is affected by system parameters such as propagation (path loss, shadowing intensity), GDAS parameters (N, L) and signal combining algorithm.