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Exact Error Probability Analysis of Arbitrary 2-D Modulation-OFDM Systems with I/Q Imbalances
Kyongkuk CHO Jaeyoon LEE Dongweon YOON
IEICE TRANSACTIONS on Communications
Publication Date: 2011/01/01
Online ISSN: 1745-1345
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technologies
I/Q imbalance, probability of error, inter-channel interference, orthogonal frequency division multiplexing,
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In OFDM systems, in-phase and quadrature (I/Q) imbalances generated in the analog front-end introduce inter-channel interference and, consequently, error performance degradation. This letter provides an exact expression involving the two-dimensional (2-D) Gaussian Q-function for the error probability of an arbitrary 2-D modulated OFDM signal with I/Q imbalances. The effects of I/Q imbalances on the distribution of an AWGN and the error performance are analyzed.