Subspace-Based Propagation Delay Estimation Robust to Frequency Offset for Two-Way Ranging

作者：Oh Daegun; Kwak Myung kyun; Chong Jong Wha^*

来源：IEEE Communications Letters, 2012, 16(2): 216-219.

DOI：10.1109/LCOMM.2011.120211.111824

• Propagation delay
• two-way ranging
• subspace-based

This letter proposes a subspace-based propagation delay estimation algorithm immune to sampling frequency offset and carrier frequency offset. The proposed algorithm is able to achieve a highly accurate propagation delay estimation by combining subspace-based fractional delay estimation with a symmetric double sided two-way ranging protocol. Not only Cramer-Rao lower bound (CRLB) was derived but also the performance of the proposed algorithm was analyzed and verified through Monte-Carlo simulations in additive white Gaussian noise (AWGN) and a two-path channel.

• 出版日期2012-2