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Content Provider | IET Digital Library |
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Author | Fereidoony, Foad Sebt, Mohammad Ali Chamaani, Somayyeh Mirtaheri, Syed Abdullah |
Abstract | Time delay estimation is of great significance in multipath propagation to recover overlapped signals and identify the channel characteristics. However, achieving a high accuracy in this purpose may pose many problems in ultra-wideband (UWB) applications. In UWB systems, capturing a signal with high sampling rates cannot readily be done; hence classical methods for time delay estimation substantially lose their precision. To overcome this challenge, the authors incorporate a robust estimation approach and supplementary sampling process in a unified algorithm to retrieve time delays from signals with low sampling rates. Toward that pursuit, a model based least squares estimator is proposed as the main approach to calculate time delays and a modified method based on multiple signal classification (MUSIC) is also presented for comparison aim. Then, the authors have developed the algorithm by embedding two additional pre-processing steps of under sampling and interpolation to achieve a higher sampling rate and a better resolution. To show the high accuracy of work, root mean square error is computed in different values of time delay. Simulation and experiment results show the considerably higher precision of the proposed algorithm in comparison with presented MUSIC type method and also previously proposed methods in literature. |
Starting Page | 376 |
Ending Page | 384 |
Page Count | 9 |
ISSN | 17519675 |
Volume Number | 10 |
e-ISSN | 17519683 |
Issue Number | Issue 4, Jun (2016) |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-spr/10/4 |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-spr.2015.0378 |
Journal | IET Signal Processing |
Publisher Date | 2016-06-01 |
Access Restriction | Open |
Rights Holder | © The Institution of Engineering and Technology |
Subject Keyword | Delay Estimation Estimation Theory Interpolation Interpolation And Function Approximation Least Mean Squares Method Model Based Least Square Estimator Model-based Super-resolution Time-delay Estimation Multipath Propagation Multiple Signal Classification MUSIC Numerical Analysis Overlapped Signal Recovery Robust Estimation Approach Root Mean Square Error Sample Rate Consideration Signal Classification Signal Processing And Detection Signal Processing Theory Signal Resolution Signal Sampling Statistics Supplementary Sampling Process Ultrawideband Application UWB System |
Content Type | Text |
Resource Type | Article |
Subject | Signal Processing Electrical and Electronic Engineering |
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