Exact Closed-Form BER Analysis of OFDM Systems in the Presence of IQ Imbalances and ICSI

In this paper, we derive an exact closed-form expression for the bit error rate (BER) of orthogonal frequency division multiplexing (OFDM) systems impaired by transmit (TX) and receive (RX) in-phase/quadrature (IQ) imbalances and imperfect channel state information (ICSI), in Rayleigh fading channel...

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Veröffentlicht in:	IEEE transactions on wireless communications 2011-06, Vol.10 (6), p.1914-1922
Hauptverfasser:	Lopez-Martinez, F J, Martos-Naya, E, Paris, J F, Entrambasaguas, J T
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Approximation BER Bit error rate Channel estimation channel estimation errors Channels Closed-form solution correlation Covariance matrix Detection, estimation, filtering, equalization, prediction Exact sciences and technology Exact solutions Fading Gaussian Information, signal and communications theory IQ imbalance Mathematical analysis Multiplexing OFDM Orthogonal Frequency Division Multiplexing Quadratic forms Rayleigh fading Receivers Signal and communications theory Signal, noise Studies Subcarriers Systems, networks and services of telecommunications Telecommunications Telecommunications and information theory Transmission and modulation (techniques and equipments) Wireless networks
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Zusammenfassung:	In this paper, we derive an exact closed-form expression for the bit error rate (BER) of orthogonal frequency division multiplexing (OFDM) systems impaired by transmit (TX) and receive (RX) in-phase/quadrature (IQ) imbalances and imperfect channel state information (ICSI), in Rayleigh fading channels. Since the decision metric in this scenario can be expressed as a quadratic form D in Gaussian complex-valued non-circularly symmetric random variables (RVs) with zero mean, we provide a general expression for the calculation of Pr{D
ISSN:	1536-1276 1558-2248
DOI:	10.1109/TWC.2011.032411.101356