Research on multi-access interference in 2.5 Gb/s symboloverlapping optical fast frequency-hopping CDMA system

摘要

Optical encoders/decoders based on fiber gratings are designed and fabricated. Experiment on one interference user2.5Gb/s symbol overlapping optical fast frequency-hopping CDMA (SO-FFH OCDMA) system is demonstrated. Multi-access interference in SO-FFH OCDMA system is studied, and is compared with that of traditional FFH OCDMAsystem. Experiment result shows that multi-access interference will degrade the system performance. With oneinterference user, SO-FFH OCDMA can also decode data correctly at data bit rate 2.5Gb/s.Keywords: symbol overlapping, FFH OCDMA, FBG, multi-access interference