Time delay estimation in cognitive radio systems
Date
2009-12Source Title
3rd IEEE International Workshop on Computational Advances in Multi-Sensor Adaptive Processing, CAMSAP 2009
Publisher
IEEE
Pages
400 - 403
Language
English
Type
Conference PaperItem Usage Stats
134
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94
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Abstract
In cognitive radio systems, secondary users can utilize multiple dispersed bands that are not used by primary users. In this paper, time delay estimation of signals that occupy multiple dispersed bands is studied. First, theoretical limits on time delay estimation are reviewed. Then, two-step time delay estimators that provide trade-offs between computational complexity and performance are investigated. In addition, asymptotic optimality properties of the two-step time delay estimators are discussed. Finally, simulation results are presented to explain the theoretical results. © 2009 IEEE.
Keywords
Cognitive radioCramer-Rao lower bound
Diversity
Maximum-likelihood
Time delay estimation
Asymptotic optimality
Cognitive radio
Cramer Rao lower bound
ON time
Simulation result
Step time
Theoretical limits
Theoretical result
Time delay estimation
Cognitive systems
Computational complexity
Cramer-Rao bounds
Estimation
Maximum likelihood estimation
Radio
Radio systems
Sensors
Technical presentations
Time delay
Permalink
http://hdl.handle.net/11693/28636Published Version (Please cite this version)
http://dx.doi.org/10.1109/CAMSAP.2009.5413247Collections
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