Abstract:

A Wireless Local Area Network (WLAN) is a flexible data communication system implemented as an extension to, or as an alternative for, a wired LAN with in a building or campus. However, communications in an indoor environment present problems not encountered in outdoor wireless communication systems. Since cellular type systems are interference limited, the indoor environment is more hostile than the outdoor environment due to the lower propagation constant. In this paper, the equation for the signal to interference ratio in a multistory building will be derived. Finally, the simulation in this research is designed to study the Bit-Error-Rate (BER) of WLAN system in the multistory environment by applying the some CDMA modulation techniques. The procedure allows a quick evaluation of BER level in Wireless LAN system due to the co-channel interference in the multistory environment.