NDLI: Optimal direct path detection for positioning with communication signals in indoor environments

Content Provider	IEEE Xplore Digital Library
Author	Jiaxin Yang Xianbin Wang Sung Ik Park Heung Mook Kim
Copyright Year	2012
Description	Author affiliation: Broadcasting System Research Group, Electronics and Telecommunications Research Institute, Daejeon, Korea (Sung Ik Park; Heung Mook Kim) \|\| Dept. of Electrical and Computer Engineering, The University of Western Ontario, London, Ontario, Canada (Jiaxin Yang; Xianbin Wang)
Abstract	Recent development in wireless communication-based positioning systems using time-of-arrival (TOA) methods poses a significant challenge for the estimation of signal propagation time in indoor environments. Due to the possible obstruction of the direct path, the signal component from direct propagation can be very weak and therefore, the performance of TOA estimation will be significantly degraded, especially when the received signal experiences severe multipath propagation effects. An optimal direct path detection algorithm using multipath interference cancellation is proposed in this paper to improve the accuracy of communication-based positioning systems. By maximizing the probability of correct identification between the strong interfering paths and noise-only paths, an optimal threshold is derived for interfering multipath component selection. The interference of multipath components is reconstructed and then subtracted from the received signal to enhance the accuracy of direct path detection. The performance of the proposed algorithm is verified by simulations.
Starting Page	4798
Ending Page	4802
File Size	235945
Page Count	5
File Format	PDF
ISBN	9781457720529
ISSN	15503607
e-ISBN	9781457720536
e-ISBN	9781457720512
DOI	10.1109/ICC.2012.6363633
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-06-10
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Channel estimation Signal to noise ratio Interference cancellation OFDM Wireless communication Correlation
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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