Two-Step Time of Arrival Estimation for Pulse-Based Ultra-Wideband Systems
In cooperative localization systems, wireless nodes need to exchange accurate position-related information such as time-of-arrival (TOA) and angle-of-arrival (AOA), in order to obtain accurate location information. One alternative for providing accurate position-related information is to use ultra-w...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2008-05-01
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| Series: | EURASIP Journal on Advances in Signal Processing |
| Online Access: | http://dx.doi.org/10.1155/2008/529134 |
| _version_ | 1818931198283481088 |
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| author | H. Vincent Poor Hisashi Kobayashi Andreas F. Molisch Zafer Sahinoglu Sinan Gezici |
| author_facet | H. Vincent Poor Hisashi Kobayashi Andreas F. Molisch Zafer Sahinoglu Sinan Gezici |
| author_sort | H. Vincent Poor |
| collection | DOAJ |
| description | In cooperative localization systems, wireless nodes need to exchange accurate position-related information such as time-of-arrival (TOA) and angle-of-arrival (AOA), in order to obtain accurate location information. One alternative for providing accurate position-related information is to use ultra-wideband (UWB) signals. The high time resolution of UWB signals presents a potential for very accurate positioning based on TOA estimation. However, it is challenging to realize very accurate positioning systems in practical scenarios, due to both complexity/cost constraints and adverse channel conditions such as multipath propagation. In this paper, a two-step TOA estimation algorithm is proposed for UWB systems in order to provide accurate TOA estimation under practical constraints. In order to speed up the estimation process, the first step estimates a coarse TOA of the received signal based on received signal energy. Then, in the second step, the arrival time of the first signal path is estimated by considering a hypothesis testing approach. The proposed scheme uses low-rate correlation outputs and is able to perform accurate TOA estimation in reasonable time intervals. The simulation results are presented to analyze the performance of the estimator. |
| first_indexed | 2024-12-20T04:12:47Z |
| format | Article |
| id | doaj.art-33a3e14acc5e4f94bfe4091b995c4ce5 |
| institution | Directory Open Access Journal |
| issn | 1687-6172 1687-6180 |
| language | English |
| last_indexed | 2024-12-20T04:12:47Z |
| publishDate | 2008-05-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | EURASIP Journal on Advances in Signal Processing |
| spelling | doaj.art-33a3e14acc5e4f94bfe4091b995c4ce52022-12-21T19:53:50ZengSpringerOpenEURASIP Journal on Advances in Signal Processing1687-61721687-61802008-05-01200810.1155/2008/529134Two-Step Time of Arrival Estimation for Pulse-Based Ultra-Wideband SystemsH. Vincent PoorHisashi KobayashiAndreas F. MolischZafer SahinogluSinan GeziciIn cooperative localization systems, wireless nodes need to exchange accurate position-related information such as time-of-arrival (TOA) and angle-of-arrival (AOA), in order to obtain accurate location information. One alternative for providing accurate position-related information is to use ultra-wideband (UWB) signals. The high time resolution of UWB signals presents a potential for very accurate positioning based on TOA estimation. However, it is challenging to realize very accurate positioning systems in practical scenarios, due to both complexity/cost constraints and adverse channel conditions such as multipath propagation. In this paper, a two-step TOA estimation algorithm is proposed for UWB systems in order to provide accurate TOA estimation under practical constraints. In order to speed up the estimation process, the first step estimates a coarse TOA of the received signal based on received signal energy. Then, in the second step, the arrival time of the first signal path is estimated by considering a hypothesis testing approach. The proposed scheme uses low-rate correlation outputs and is able to perform accurate TOA estimation in reasonable time intervals. The simulation results are presented to analyze the performance of the estimator.http://dx.doi.org/10.1155/2008/529134 |
| spellingShingle | H. Vincent Poor Hisashi Kobayashi Andreas F. Molisch Zafer Sahinoglu Sinan Gezici Two-Step Time of Arrival Estimation for Pulse-Based Ultra-Wideband Systems EURASIP Journal on Advances in Signal Processing |
| title | Two-Step Time of Arrival Estimation for Pulse-Based Ultra-Wideband Systems |
| title_full | Two-Step Time of Arrival Estimation for Pulse-Based Ultra-Wideband Systems |
| title_fullStr | Two-Step Time of Arrival Estimation for Pulse-Based Ultra-Wideband Systems |
| title_full_unstemmed | Two-Step Time of Arrival Estimation for Pulse-Based Ultra-Wideband Systems |
| title_short | Two-Step Time of Arrival Estimation for Pulse-Based Ultra-Wideband Systems |
| title_sort | two step time of arrival estimation for pulse based ultra wideband systems |
| url | http://dx.doi.org/10.1155/2008/529134 |
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