A New Cyclic-Prefix Based Algorithm for Blind CFO Estimation in OFDM Systems
Journal
IEEE Transactions on Wireless Communications
Journal Volume
15
Journal Issue
6
Pages
3995-4008
Date Issued
2016
Author(s)
Lin, T.-C.
Abstract
In this paper, a new algorithm based on cyclic prefix (CP) is proposed for blind carrier frequency offset (CFO) estimation in orthogonal frequency division multiplexing (OFDM) transmission over multipath channels. Like other CP-based methods, the proposed method enjoys low complexity. The proposed method is very robust to the symbol timing synchronization error. Closed-form formulas for CFO estimates are derived. In addition, we also carry out the theoretical mean-square-error analysis and derive the Cramer-Rao bound. Simulation results show that the proposed method performs very well.
Type
journal article