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Performance Improvement of Hybrid SCM SAC-OCDMA Networks using Multi Diagonal Code | ||
| Al-Ma'mon College Journal | ||
| Article 1, Volume 0, Issue 27, 2018, Pages 336-355 | ||
| Authors | ||
| Rashid Ali Fayadh; Ali Mahdi Hamadi | ||
| Abstract | ||
| Hybrid subcarrier Multiplexing (SCM) incorporating spectral amplitude coding optical code division multiple access (SAC-OCDMA) technology has been investigated both by simulation and mathematical model. Hybrid SCM/SAC-OCDMA system is combined by two schemes in a way that the resulting hybrid system is robust against the Multi Access Interference (MAI) and much enhanced channel data rate. In this paper, the performance of hybrid SCM/SAC-OCDMA system is improved basing on spectral amplitude coding to suppress such impairments and to improve the overall system performance in the sensitivity at a BER of 10-9. As a result, the proposed system based on Multi Diagonal (MD) code show a better performance compared to the conventional code that employing SAC-OCDMA system. We also evaluate the different design's parameters under the maximum number of subcarrier (18 subcarriers in each optical channel) multiplexed for integrating OCDMA technology onto the existing fiber-wireless infrastructure at 155 M bit/s data rate for different fiber length. Furthermore, the BER ≤10-9 has been achieved based on the proposed system for 45 km at 4.81 GHz. | ||
| Keywords | ||
| Subcarrier Multiplexing; sac; OCDMA; MD code | ||
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