GLCP OFDM systems with I/Q imbalance

Author

Cao, Mingzheng ; Ge, Hongya

Author_Institution

Dept. of ECE, New Jersey Inst. of Technol., Newark, NJ

Volume

13

Issue

4

fYear

2009

fDate

4/1/2009 12:00:00 AM

Firstpage

230

Lastpage

232

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.

Keywords

OFDM modulation; communication complexity; fading channels; transceivers; GLCP OFDM systems; I/Q imbalance; frequency-selective fading channels; grouped linear constellation precoded system; in-phase-quadrature imbalance; orthogonal frequency-division multiplexing system; transceiver; Baseband; Decoding; Frequency division multiplexing; Frequency domain analysis; Frequency-selective fading channels; OFDM; Receiving antennas; Transceivers; Transmitters; Transmitting antennas; I/Q imbalance, grouped linear constellation precoding, OFDM.;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2009.090130

Filename

4815066