LOCATION USING ESTIMATED IMPULSE RESPONSES IN A MOBILE COMMUNICATION SYSTEM

Mobile station location is typically done using techniques based on time of arrival measurements like network assisted GPS and observed time difference of arrival. Other methods are based on network available information like cell-id, cell-sector, timing advanced and received-signal-strength. In this paper, we present a novel method for mobile station location using estimated channel impulse responses (CIRs). The CIR is estimated and used in the demodulating process of wideband mobile communication systems like GSM and UMTS. The method is expected to yield better accuracy than other available methods in areas where significant multipath propagation is present.