In this letter, an initial ranging scheme for orthogonal frequency-division multiple-access systems is proposed by which users that intend to establish a communication link with the base station (BS) perform spreading in both the time and frequency domains and their synchronization parameters are estimated at the BS in closed-form using the ESPRIT algorithm. Compared to existing alternatives, the resulting scheme exhibits increased robustness against residual frequency offsets without involving computationally demanding peak search procedures.
|Autori:||L. SANGUINETTI; MORELLI M; V. H. POOR|
|Titolo:||An ESPRIT-Based Approach for Initial Ranging in OFDMA Systems|
|Anno del prodotto:||2009|
|Digital Object Identifier (DOI):||10.1109/TCOMM.2009.11.080104|
|Appare nelle tipologie:||1.1 Articolo in rivista|