Theoretical estimators and lower-bounds for receiver-to-receiver time synchronization in multi-hop wireless networks

Djenouri, Djamel

Abstract

Maximum likelihood estimators (MLE) for time synchronization parameters of receiver-to-receiver protocols are derived. The MLE are first provided for a single-hop model, then generalized to a multi-hop model. The appropriate Cramer- Rao lower bounds (CRLB) for the estimators are then derived, which serves as a theoretical lower bound to any unbiased estimator. The proposed estimators are compared with their respective CRLB through simulation in multi-hop scenarios of up-to eight hops. The results show fast convergence of the estimation precision to the CRLB and demonstrate a high precision, where the mean square error (MSE) does not exceed 10 -6 for the skew, and 10 -5 for the offset.

• Presentation Conference Type: Conference Paper (published)
• Conference Name: IET International Conference on Wireless Communications and Applications (ICWCA 2012)
• Start Date: Oct 8, 2012
• End Date: Oct 10, 2012
• Online Publication Date: Jul 15, 2013
• Publication Date: Jul 15, 2013
• Deposit Date: Mar 3, 2020
• Volume: 2012
• ISBN: 9781849195508
• DOI: https://doi.org/10.1049/cp.2012.2084
• Public URL: https://uwe-repository.worktribe.com/output/5598101