Abstract
A new position location technique using the transmitter identification (TxID) sequences in the digital TV (DTV) signals is proposed in this paper. Conventional Global Positioning System (GPS) usually does not work well inside buildings due to the high frequency and weak field strength of the signal. In contrast to the GPS, the DTV signals are received from transmitters at relatively short distance, while the broadcast transmitters operate at levels up to the megawatts ERP. Also the RF frequency of the DTV signal is much lower than the GPS, which makes it easier for the signal to penetrate buildings and other objects. In this paper, the proposed position location system based on DTV TxID signal is presented. Performance of the proposed technique is evaluated and compared with other existing position location systems. Possible ways to improve the accuracy of the new position location system is discussed.
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