Authors : R. Kanmani and A. Jameer Basha
Abstract: To analyze and improve the wireless OCDMA systems performance characteristics such as BER, Q factor and Eye Diagram three distinguishable works have been carried out in this study. Different coding techniques such as OOC, PC and EPC are implemented. The results show that the average BER of EPC, PC, OOC are 7. 01E-12, 4. 64E-10 and 2. 74 E-6 and the average Q factor for EPC, PC, OOC are 22. 12, 21. 254 and 19. 606. From the observed values, it was inferred that EPC is 4% better than PC and 12% better than OOC. Several variations of two dimensional wavelength hoping/time spreading including PC/PC, PC/OOC and PC/EPC OCDMA system codes are implemented and the performance characteristics were analyzed for a user range of 2-20. It was observed that the average BER for PC/EPC, PC/OOC, PC/PC are 1. 01E-12, 6. 06E-8 and 9. 20E-6 and the average Q factor are 22.63, 21.268 and 20.11. From the observed values, it was concluded that PC/EPC performs better than PC/OOC and PC/PC 2D coding techniques. It is proved that using a distance based power allocation algorithm the transmitted power can be saved by 7.85 mW when considered over the distance range of 100-1000 m under high atmospheric turbulence environment.
R. Kanmani and A. Jameer Basha, 2016. Performance Analysis of Wireless OCDMA Systems Using OOC, PC and EPC Codes. Asian Journal of Information Technology, 15: 2087-2093.