R. S. Fyath and  Mustafa A. B. Al-Qadi,  Investigation of I/Q Imbalance in Coherent Optical OFDM System.   journal   = {International Journal of Electronics and Communication Engineering}, [online]. World Academy of Science, Engineering and Technology.
    December 2011, vol. 60(12). 1932 - 1937
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/4837.