High Data Rate Wlan

The demands on WLANs for functionality and scalability are growing due to the rapid proliferation of new network devices and applications. Wired communication networks can provide the connectivity and performance but not mobility. WLAN provides the solution for portability with connection of mobility as well as performance. The increased demands for mobility and flexibility in our daily life are demands that lead the development from wired LANs to wireless LANs (WLANs). A wireless LAN is based on a cellular architecture where the system is subdivided into cells, where each cell (called Base service Set or BSS) is controlled by a Base station (called Access point or AP). This paper considers the problem of providing gbps user data-rate in indoor environments. To upgrade the data rate of WLANs, the IEEE presented the IEEE 802.11g standard for providing higher data rates up to 54 Mbps at the 2.4 GHz frequency band. In this paper, performance of IEEE 802.11g standard is described with respect to WLANs.