This paper proposes a novel algorithm for Time of Arrival (ToA) estimation in Orthogonal Frequency Division Multiplexing (OFDM) systems. The algorithm performs the estimation starting from the channel frequency samples, in a fully opportunistic way when some known reference signals are already available for operations different from ToA estimation itself. The developed solution, named Difference-Based ToA Estimation (DBTE), exploits the intrinsic properties of a multi-carrier OFDM system to calculate the ToA with a low computational cost. The conceived technique is compared with other existing methods in terms of performance and computational time, in order to outline the interesting accuracy/complexity trade-off that characterizes the presented approach.

A low-complexity approach for time of arrival estimation in OFDM systems

Noschese, Matteo;Babich, Fulvio;Comisso, Massimiliano;Driusso, Marco
2017-01-01

Abstract

This paper proposes a novel algorithm for Time of Arrival (ToA) estimation in Orthogonal Frequency Division Multiplexing (OFDM) systems. The algorithm performs the estimation starting from the channel frequency samples, in a fully opportunistic way when some known reference signals are already available for operations different from ToA estimation itself. The developed solution, named Difference-Based ToA Estimation (DBTE), exploits the intrinsic properties of a multi-carrier OFDM system to calculate the ToA with a low computational cost. The conceived technique is compared with other existing methods in terms of performance and computational time, in order to outline the interesting accuracy/complexity trade-off that characterizes the presented approach.
2017
9781538629130
http://ieeexplore.ieee.org/document/8108096/
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11368/2917055
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