Efficient Mitigation of Frequency-Selective I/Q Imbalance in OFDM Receivers

Abstract

I/Q imbalance is one of the main practical obstacles in the implementation of direct-conversion receivers. This paper presents novel DSP-based techniques for the estimation and compensation of frequency-selective receiver I/Q imbalances in OFDM systems. The estimation is based on a special pilot or preamble structure, and frequency-domain smoothing is… (More)
DOI: 10.1109/VETECF.2008.232

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