期刊
IEEE JOURNAL OF SELECTED TOPICS IN SIGNAL PROCESSING
卷 9, 期 2, 页码 216-228出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JSTSP.2014.2370934
关键词
Network localization; wideband ranging; energy detection; range likelihood; TOA estimation
资金
- Italian MIUR project GRETA [2010WHY5PR]
- Office of Naval Research [N00014-11-1-0397]
- Defense University Research Instrumentation Program [N00014-08-1-0826]
- Copernicus Fellowship
- MIT Institute for Soldier Nanotechnologies
Wideband ranging is essential for numerous emerging applications that rely on accurate location awareness. The quality of range information, which depends on network intrinsic properties and signal processing techniques, affects the localization accuracy. A popular class of ranging techniques is based on energy detection owing to its low-complexity implementation. This paper establishes a tractable model for the range information as a function of wireless environment, signal features, and energy detection techniques. Such a model serves as a cornerstone for the design and analysis of wideband ranging systems. Based on the proposed model, we develop practical soft-decision and hard-decision algorithms. A case study for ranging and localization systems operating in a wireless environment is presented. Sample-level simulations validate our theoretical results.
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