Joint estimation of carrier frequency offset, dc offset and I/Q imbalance for OFDM systems |
| |
| Authors: | Tao Liu Hanzhang Li |
| |
| Affiliation: | a Department of Communication Engineering, School of Information Engineering, University of Science and Technology Beijing, Beijing 100083, China
b China Mobile Group Shandong Co., Ltd., Jinan 250100, China |
| |
| Abstract: | Orthogonal frequency division multiplexing (OFDM) systems with direct-conversion receiver (DCR) are vulnerable to carrier frequency offset (CFO), dc offset (DCO) and in-phase/quadrature (I/Q) imbalance. In this paper, we propose blind estimator for joint estimation of CFO, DCO and I/Q imbalance in OFDM systems with DCR. Simulation results show that performance of proposed estimator approaches Cramér-Rao lower bound (CRLB) asymptotically, which demonstrates its effectiveness. |
| |
| Keywords: | Blind estimation Carrier frequency offset (CFO) Dc offset (DCO) In-phase/quadrature (I/Q) imbalance Orthogonal frequency division multiplexing (OFDM) |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
