OCDMA Network Performance Using Various Detection Techniques

Harun, Hafizul Abdullah (2016) OCDMA Network Performance Using Various Detection Techniques. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

Advancement in fiber optic technology have made long-haul communications systems reach distance that were once unheard of. This long distance communication is made possible by using modulation techniques that do not require a complex link design which best applied in spectral-amplitude coding optical code-division multiple access (SAC-OCDMA) system. Among several kinds of OCDMA systems, SAC scheme attracts more users because multiple access interference (MAI) can be eliminated completely in the system. In this project, the investigation used different detection schemes namely the modified-AND subtraction detection as well as Complementary subtraction and Spectral direct detection for SAC-OCDMA systems. The performance of mentioned techniques which is implemented with Fiber Bragg Grating (FBG) based encoder/decoder is compared via simulation in downstream and upstream access network at point to multipoint (P2MP) configuration.The simulation will be carried out using OptiSystem version 10 and the performance is characterized through the eye diagram, BER and received power at various bit rate and transmission length. The best detection technique is then verified.

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