Accurate TOA Estimating UWB-IR Transceiver for Ranging System in Multi-Path Environment
| Autor: | Ryosuke Fujiwara, Goichi Ono, Akira Maeki, Kenichi Mizugaki, Tatsuo Nakagawa, Takayasu Norimatsu, Takahide Terada, Masayuki Miyazaki |
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| Rok vydání: | 2011 |
| Předmět: |
Positioning system
Computer Networks and Communications Wireless network Computer science business.industry ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS Ultra-wideband Ranging Sensor array Duty cycle Electronic engineering Electrical and Electronic Engineering Transceiver Telecommunications business Wireless sensor network Software |
| Zdroj: | IEICE Transactions on Communications. :777-785 |
| ISSN: | 1745-1345 0916-8516 |
| DOI: | 10.1587/transcom.e94.b.777 |
| Popis: | In this work, an ultra-wideband impulse radio (UWB-IR) transceiver with accurate time-of-arrival (TOA) estimation for a ranging/positioning system was developed for wireless sensor network applications. The system uses an impulse radio characterized by a low duty cycle and direct-sequence spreading, which enable very precise ranging and good receiver sensitivity. An algorithm enabling the TOA of the first-path signal to be measured accurately in a multi-path environment with simple, low-power and low cost implementations was proposed. UWB chips with CMOS 0.18-μm technology and UWB transceiver modules performed that the accuracy of the proposed ranging system is 18.5 cm in a closed space. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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