This paper focuses on the issue of carrier frequency synchronization for filtered multitone wireless transmission over time-frequency selective fading channels. Rather than either relying only on known pilot symbols multiplexed within the transmitted burst or exploiting the specific signal structure in a blind mode, the estimation algorithm we pursue is derived from the maximum likelihood principle and takes advantage of both pilot symbols and also the unknown information-bearing symbols through specific differential decision-directed processing. When compared to conventional pilot-based methods, the proposed approach improves the frequency acquisition range without degrading estimation accuracy at even lower cost in terms of computational complexity.
|Autori interni:||MORETTI, MARCO|
|Autori:||Moretti M; Lottici V; Reggiannini R; Dainelli G|
|Titolo:||Combined Pilot-Aided and Decision-Directed Carrier Synchronization for Filtered Multitone Wireless Systems|
|Anno del prodotto:||2013|
|Digital Object Identifier (DOI):||10.1109/TWC.2012.122212.120215|
|Appare nelle tipologie:||1.1 Articolo in rivista|