COMVELOC: A Compensation Vector-Based Indoor Localization System in WIFI Environments

A compensation based indoor localization method is proposed for localizing mobile stations utilizing Received Signal Strength Indicator (RSSI). The method consists of two subsystems, a data collection subsystem and a decision making subsystem based on log-distance path loss model. The main contribution of the method proposed is that localization errors caused by multipath fading are estimated and compensated in a vector space. The accuracy of traditional log-distance path loss model based localization method is improved. A new measure of multipath fading is proposed and analysed in comparison to existing measures. Experiments are conducted and results show that an average error of 2.98m and a 31% improvement compared to the traditional log-distance path loss model based algorithms can be achieved.