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http://dx.doi.org/10.5302/J.ICROS.2012.18.1.047

Performance Analysis of Residual Frequency Estimator in WiBro Geo-location System  

Park, Ji-Won (Chungnam National University)
Im, Jeong-Min (Chungnam National University)
Sung, Tae-Kyung (Chungnam National University)
Publication Information
Journal of Institute of Control, Robotics and Systems / v.18, no.1, 2012 , pp. 47-53 More about this Journal
Abstract
In cellular geo-location systems, positioning performance is influenced by hearability of receivers. Hearability can be enhanced by using long integration at the receiver. When unknown residual frequency remains in baseband signals, however, the coherent integration loss increases as the residual frequency becomes larger. Consequently, length of coherent integration is determined by the residual frequency. By precise estimation and compensation of the residual frequency, integration length can be enlarged. This paper presents a residual frequency estimator for WiBro geo-location and analyzes its performance in multipath environment. By computer simulation, an optimal receiver structure to enhance the hearability of WiBro geo-location is proposed.
Keywords
residual frequency estimator; long integration; WiBro; geo-location;
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Times Cited By KSCI : 1  (Citation Analysis)
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