High Resolution Time-of-Arrival for a cm-precise super 10 meter 802.15.3C-based 60 GHz OFDM Positioning Application

摘要

A 802.15.3c-compatible technique for super 10 meter cm-accurate and precise ranging is introduced, achieving update rates of more than 300 kHz. The implementation is realized on top of the 802.15.3c PHY High-Speed-Interface mode, specifying a multi-carrier orthogonal frequency division multiplexed (OFDM) implementation. The aimed application conditions foresee strong discrete non-line-of-sight fading conditions. The system’s performance is evaluated over these strong channel conditions. Due to the high absorption in the 60 GHz band and thus the poor signal-to-noise ratio at super 10 m distances the algorithm should be noise tolerant. The algorithm combines a classic auto correlation with the MLS-Prony method, a high resolutiontechnique for frequency content analysis.