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Improved High Resolution TOA Estimation for OFDM-WLAN Based Indoor Ranging

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3 Author(s)
Ziming He ; Centre for Commun. Syst. Res., Univ. of Surrey, Guildford, UK ; Yi Ma ; Tafazolli, R.

This letter presents three novel approaches, namely peak detection, modified maximum peak-to-leaking ratio detection and channel frequency response (CFR) reconstruction, in order to improve the high resolution TOA estimation technique when using OFDM-based WLAN preamble. Computer simulations show that all the proposed approaches outperform the state-of-the-art in the WINNER A1 LOS channel. Moreover, the proposed approaches demonstrate their advantages in WARP2 board based Wi-Fi testbed.

Published in:

Wireless Communications Letters, IEEE  (Volume:2 ,  Issue: 2 )