|
|
|
| A Blind Estimation Algorithm of Synchronization Parameter for OFDM Signals Based on Auto-correlation Matrix |
| Wang Qing; Ge Lin-dong; Gong Ke-xian |
| Institute of Information Engineering, The PLA Information Engineering University, Zhengzhou 450002, China |
|
|
|
|
Abstract An algorithm using auto-correlation matrix of received data for OFDM timing and carrier frequency offset estimation is presented in this paper. The algorithm does not need training data. Fractional frequency offset tracking and frame synchronization are implemented by minimizing the modular sum of off-diagonal elements and diagonal elements whose position is corresponding to virtual carrier’s number respectively. Integral frequency offset is estimated exactly based on the position movements of diagonal elements. Mathematical derivation is also provided in the paper. The simulation results show that the proposed algorithm has a large estimation range and a high resolution.
|
|
Received: 28 July 2006
|
|
|
|
|
|
|
|
|
2008, Vol. 30 
