“Bit Error and Packet Error Probability for Rectangular Mary-QAM in OFDM Transmission System over Rayleigh Fading Channels”. Journal of Engineering and Sustainable Development, vol. 11, no. 3, Dec. 2007, pp. 149-66, https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/1750.