Minimum Cell Size for Information Capacity Increase in a Shadowed Environment of Cellular System Operating at Higher Carrier Frequency

Mathematical analysis, supported by computer simulations is used to find a theoretical limit to cell size reduction in cellular wireless network in a shadowed fading environment. Information capacity measure based on the uplink of cellular wireless network is used for the analysis. Results show that at higher microwave carrier frequencies and smaller cell radius some of the second tier co-channel interfering cells (co-channel cells after the first six co-channel cells) becomes active. This causes a decrease in the information capacity of the cellular wireless network. The results also show that the decrease in the information capacity becomes bigger as the carrier frequency increases and cell size radius decreases.