Conference Proceeding

Mobile Location Finding Using ATSC Mobile/Handheld Digital TV RF Watermark Signals

Vehicular Technology Conference, 1988, IEEE 38th 10/2010; DOI:10.1109/VETECF.2010.5594101 pp.1 - 5 In proceeding of: Vehicular Technology Conference Fall (VTC 2010-Fall), 2010 IEEE 72nd
Source: IEEE Xplore

ABSTRACT This paper investigates the use of ATSC M/H digital television (DTV) signal for location finding. In comparison to satellite based location finding system, DTV signals have higher field strength, wider bandwidth, lower frequency band, and DTV transmission towers are pervasively available everywhere. They can be used for indoor and mobile location finding in major cities where satellite based system might not function well. The ATSC receiver can obtain the multiple transmitter impulse responses and signal arrival times using the embedded RF watermark (RFWM) signal, and then derives its geographic coordinates based on the position of ATSC transmitters. As a critical step of this process, the transmitter identification in mobile environment has significant impact on the overall accuracy of location finding. In this paper, we present extensive analytical and simulation results to demonstrate the performance of RFWM technology over mobile channels.

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Keywords

ATSC M/H digital television
 
ATSC receiver
 
ATSC transmitters
 
critical step
 
DTV
 
DTV signals
 
DTV transmission towers
 
embedded RF watermark
 
lower frequency band
 
major cities
 
mobile channels
 
multiple transmitter impulse responses
 
paper investigates
 
RFWM
 
RFWM technology
 
simulation results
 
wider bandwidth