NDLI: ML timing estimation for generalized UWB-IR energy detection receivers

Content Provider	IEEE Xplore Digital Library
Author	Luecken, H. Steiner, C. Wittneben, A.
Copyright Year	2009
Description	Author affiliation: Communication Technology Laboratory, ETH Zurich, 8092, Switzerland (Luecken, H.; Steiner, C.; Wittneben, A.)
Abstract	Timing estimation of the receive pulse is a crucial component for communication systems as well as localization with ultra wideband impulse radio. Standard timing estimation algorithms might not be applicable due to stringent requirements on complexity and power consumption of the receiver. Therefore, we consider maximum likelihood timing estimation at the output of a generalized energy detection receiver, that consists of a squaring device followed by an arbitrary post-detection filter and low rate sampler. Moreover, we assume only the statistics of the channel to be known at the receiver. To the best of our knowledge, this problem has not been treated so far in this generalized set up. Known approaches for specific post-detection filters rely on a Gaussian approximation of the detector output. We show that the estimation accuracy can be improved by using the exact marginal PDF of the energy detector output. This is verified by channel model and measurements. Towards reduced complexity, we approximate the ED detector output as multivariate normally or multivariate log-normally distributed. Verification based on channel model and measured channels favors the log-normal approximation and shows that the correlation is not relevant. Accuracy down to centimeter precision can be reached.
Starting Page	829
Ending Page	833
File Size	345231
Page Count	5
File Format	PDF
ISBN	9781424429301
DOI	10.1109/ICUWB.2009.5288771
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-09-09
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Maximum likelihood estimation Maximum likelihood detection Energy consumption Filters Receivers Detectors Timing Statistics Gaussian approximation Ultra wideband technology
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
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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