A novel iterative approach for Doppler spread estimation in LOS environment
Resource
Communications, 2004 IEEE International Conference on
Journal
Communications, 2004 IEEE International Conference on
Pages
-
Date Issued
2004-06
Date
2004-06
Author(s)
Chen, Po-Ying
Li, Hsueh-Jyh
DOI
N/A
Abstract
In this paper, a novel iterative algorithm for maximum Doppler frequency estimation is proposed. In line-of-sight (LOS) environments, it is known that the performance of the conventional maximum Doppler frequency estimator obtained by the Rayleigh fading assumption will degrade severely. Thus we propose an estimator that estimates the Rician K factor first, then iteratively estimate the Doppler spread and the angle of arrival (AOA) of the LOS component through the autocorrelation function. In addition, the Cramer-Rao bounds (CRB) for the K factor and maximum Doppler frequency estimations are also derived for comparison. Simulation results indicate that the proposed estimator is not only superior to the conventional estimator but also robust to the channel parameters variation.
SDGs
Type
journal article
File(s)![Thumbnail Image]()
Loading...
Name
01313126.pdf
Size
412.24 KB
Format
Adobe PDF
Checksum
(MD5):ec46cba4b33a82ef41e5b3eed583b837