The effect of total noise on two-dimension OCDMA codesLayth A. Khalil Al Dulaimi, R. Badlishah Ahmed, Naimah Yaakob, Syed A. Aljunid and Rima MatemEPJ Web Conf., 162 (2017) 01027DOI: https://doi.org/10.1051/epjconf/201716201027