Downlink based Intercell Time Synchronization using Maximum Likelihood Estimation

A method to establish a time synchronization for base stations in a cellular network is derived based on the maximum likelihood estimation principle. Its performance is analyzed and compared to a heuristic technique from the literature. The main feature of these synchronization algorithms is that a...

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Bibliographic Details
Main Authors: Jordan, M., Senst, M., Yang Cui, Ascheid, G., Meyr, H.
Format: Conference Proceeding
Language:English
Subjects:
Base stations
Broadcasting
Delay effects
Downlink
Frequency synchronization
Global Positioning System
Maximum likelihood estimation
OFDM
Signal processing algorithms
Time measurement
Online Access:Request full text
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Description
Summary:A method to establish a time synchronization for base stations in a cellular network is derived based on the maximum likelihood estimation principle. Its performance is analyzed and compared to a heuristic technique from the literature. The main feature of these synchronization algorithms is that a time synchronization of the base stations is achieved by measurements from the users in the downlinks that are associated to the base stations. The steady-state is reached after a low number of iterations and a low residual error is obtained. The good accuracy allows the application of this algorithm in the context of single frequency networks (SFN), where a high degree of time-synchronization between participating base stations is required.
ISSN:2167-1753
DOI:10.1109/ISTMWC.2007.4299174