A Novel Indoor Location Sensing Mechanism for IEEE 802.11 b/g Wireless LAN

Abstract

Wireless LAN, now a day exists in most of the organizations. Hardware is inexpensive to buy and easily available off-the-shelf. More and more offices, organizations and public places are installing it for its ease of utilization. Developing location aware services using WLAN has therefore gained tremendous interest in recent years. It is however, still a daunting challenge for the research community to improve location accuracy inside a building to a few meters by means of computing path loss to find distances based on signal strength of a received RF signal. The accuracy offered by various top-of the-range products using signal strength methods within the indoor environment is not very good. This paper presents a novel method to achieve improved consistency in received signal strength of an RF signal by effectively reducing the multi-path affect on RF propagation inside the building, thus enabling development of better location estimation system.