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Title: Analysis of performance assessment of direct-detection OFDM optical receivers with imperfect RF demodulation
Authors: Rebola, J.
Cartaxo, A. V. T.
Keywords: Bit error probability
Direct-detection receiver
Moment generating function
Optical communications
Orthogonal frequency division multiplexing
Radio-frequency demodulation
Issue Date: 2014
Publisher: Optical Society of America
Abstract: An analytical method based on the moment generating function (MGF) is proposed for assessing the performance of direct-detection (DD) orthogonal frequency division multiplexing (OFDM) optical receivers with radiofrequency (RF) demodulation. The MGF-based method is a generalization of the method previously reported in the literature for DD baseband OFDM optical receivers. The proposed method relies on the analytical derivation of equivalent filters that describe the combined effect of electrical filtering + RF demodulation + FFT operation + the equalizer of the OFDM receiver for the real and imaginary parts of the signal at the equalizer output. The method takes into account imperfections of the RF demodulator, namely, power and phase imbalance between the RF demodulator arms and different electrical filtering on its arms. Numerical results show excellent agreement between the bit error probability estimates provided by the proposed method and estimates obtained from Monte Carlo simulation, in the absence and presence of receiver imperfections.
Description: WOS:000330475500009 (Nº de Acesso Web of Science)
Peer reviewed: Sim
ISSN: 1943-0620
Publisher version: The definitive version is available at:
Appears in Collections:CTI-RI - Artigos em revistas científicas internacionais com arbitragem científica

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