Nlend, Samuel, and Theo G. Swart. “Multiple Access Interference Bit Error Rate Evaluation Technique for Direct Detection FFH-OCDMA Bragg Gratings Based Channels”. ECTI Transactions on Electrical Engineering, Electronics, and Communications 21, no. 3 (October 28, 2023): 251467 . accessed December 6, 2025. https://ph02.tci-thaijo.org/index.php/ECTI-EEC/article/view/251467.