Method and system of time-of-arrival estimation for ultra wideband multi-band orthogonal frequency division multiplexing signals
US8023595B2 · kind B2 · utility
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Key dates
| Filing date | Jul 21, 2008 |
| Grant date | Sep 20, 2011 |
| Priority date | — |
| Expiry date | Feb 21, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D30/70
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A time-of-arrival (TOA) estimation method for multi-band orthogonal frequency division multiplexing (MB-OFDM) signals uses a simple equally-spaced channel model to recover the impulse response of the wireless channel, and locates the delay of the first channel path by minimizing the energy leakage from the first channel path. The TOA is estimated based on the delay. Such a method does not require channel information for TOA estimation at the receiver and does not require modification of the receiver structure. The method also avoids a sub-optimal solution known to occur in maximum likelihood (ML) estimation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.