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Location positioning of an object is essential technology for Location-Based Services (LBS). Most location positioning systems use specially designed equipment. Because distribution of this specialized equipment is costly, many studies have been conducted on location positioning using only wireless equipment under a wireless LAN infrastructure. A cooperative location positioning system (CLPS) that uses the RSSI (Received Signal Strength Indicator) between mobile equipment, including mobile equipment and access points, requires great concentration in their applications to increase accuracy. This study investigates the relationship between nodes by analyzing a WiPS (Wireless LAN based indoor Positioning System), a similar type of CLPS, and proposes a improved cooperative positioning system to increase performance.
Date of Conference: Sept. 2006