An ESPRIT-based approach for Initial Ranging in OFDMA systems

Abstract--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.

• Type: Journal
• Year: 2008
• Where: CORR
• Authors: Luca Sanguinetti, Michele Morelli, H. Vincent Poor
• Keywords: CORR 2008, Education, Frequency-division Multiple-access Systems, Initial Ranging Scheme, Residual Frequency Offsets