OFDM Transmission for Time-Based Range Estimation

OFDM is proposed for time-based range estimation (TBRE) and analyzed with respect to its accuracy, both theoretically, in terms of its Cramer-Rao lower bound (CRLB), and practically, in terms of its maximum likelihood estimator (MLE). The CRLB for OFDM transmission is compared to that for pseudo-noi...

Full description

Saved in:
Bibliographic Details
Published in:IEEE signal processing letters 2010-06, Vol.17 (6), p.571-574
Main Authors: Donglin Wang, Fattouche, Michel
Format: Article
Language:English
Subjects:
Accuracy
AWGN
Bandwidth
Baseband
Channels
CRLB
Delay estimation
Discrete Fourier transforms
Fourier transforms
Lower bounds
Mathematical analysis
Maximum likelihood estimation
Maximum likelihood estimators
OFDM
Orthogonal Frequency Division Multiplexing
Performance analysis
probability of outlier
Propagation delay
Signal processing
threshold region
Thresholds
time-based range estimation (TBRE)
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:OFDM is proposed for time-based range estimation (TBRE) and analyzed with respect to its accuracy, both theoretically, in terms of its Cramer-Rao lower bound (CRLB), and practically, in terms of its maximum likelihood estimator (MLE). The CRLB for OFDM transmission is compared to that for pseudo-noise (PN) transmission, demonstrating a large performance gap in favour of OFDM. Moveover, the MLE for TBRE is compared to the commonly used MLE for channel estimation (CE), demonstrating a performance gap in favour of the MLE for TBRE. Finally, the CRLB for OFDM is compared to its corresponding MLE for TBRE, demonstrating a good agreement in performance except for the so-called ¿threshold effect¿, which is analyzed analytically in this letter.
ISSN:1070-9908
1558-2361
DOI:10.1109/LSP.2010.2047958