GLCP OFDM systems with I/Q imbalance

Authors:
Mingzheng Cao;Hongya Ge
Affiliations:
Dept. of ECE, New Jersey Institute of Technology, Newark, NJ;Dept. of ECE, New Jersey Institute of Technology, Newark, NJ
Venue:
IEEE Communications Letters
Year:
2009

Citing 2
Cited 0

Space-time-frequency coded OFDM over frequency-selective fading channels

IEEE Transactions on Signal Processing
MIMO OFDM Receivers for Systems With IQ Imbalances

IEEE Transactions on Signal Processing

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Abstract

In this work, a grouped linear constellation precoded orthogonal frequency-division multiplexing (GLCP OFDM) system, with the transceiver in-phase/quadrature (I/Q) imbalance operating over frequency-selective fading channels are studied. A new subcarrier grouping scheme in such a system is proposed. Through analysis and simulations, we demonstrate that with the proposed scheme, low-complexity solutions can be developed to mitigate I/Q imbalance, and provide a performance comparable to (or better than) the optimal subcarrier grouping scheme with no I/Q imbalance.