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A Robust Estimation of Residual Carrier Frequency Offset With I/Q Imbalance in OFDM Systems.
- Source :
- IEEE Transactions on Vehicular Technology; Mar2015, Vol. 64 Issue 3, p1254-1259, 6p
- Publication Year :
- 2015
-
Abstract
- In this paper, we focus on improving the accuracy of frequency offset estimation for an orthogonal frequency-division multiplexing (OFDM) system under the conditions of the joint impairments in both carrier frequency offset (CFO) and in-phase/quadrature (I/Q) imbalance. To propose a robust CFO estimation scheme and to benchmark its performance, the performance of the conventional frequency estimation algorithm in the presence of I/Q imbalance is analyzed, and some modifications to the conventional estimation scheme are highlighted. We show via simulations that such a design achieves a remarkable robustness against I/Q imbalance; thereby, the proposed scheme can efficiently estimate the CFO, irrespective of the I/Q mismatch. [ABSTRACT FROM PUBLISHER]
Details
- Language :
- English
- ISSN :
- 00189545
- Volume :
- 64
- Issue :
- 3
- Database :
- Complementary Index
- Journal :
- IEEE Transactions on Vehicular Technology
- Publication Type :
- Academic Journal
- Accession number :
- 101591477
- Full Text :
- https://doi.org/10.1109/TVT.2014.2311157