Estimation and Correction of transmitter-caused I/Q Imbalance in OFDM Systems

Authors: L. Brötje, S. Vogeler, K.-D. Kammeyer, R. Rueckriem, S. Fechtel
Abstract: In the presented paper a new method of estimating and correcting transmitter-caused I/Q imbalance in a transmission system based on the WLAN standard IEEE802.11a is proposed. The estimation process consists of an initial estimation followed by an iterative tracking of the I/Q imbalance parameters. Additionally, with the modified preamble structure presented in this paper a further improvement in estimation quality can be achieved. At the receiver the I/Q imbalance correction based on the estimated parameters leads to a significant performance gain as we will show in our simulation results.
Document type: Conference Paper
Publication: Hamburg, Germany, 10. - 11. September 2002
Conference: 7th International OFDM-Workshop (InOWo 02)
Index: 204
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