Title :
Noncoherent Spectral/Spatial Optical CDMA System Using 2-D Diluted Perfect Difference Codes
Author :
Yeh, Bih-Chyun ; Lin, Cheing-Hong ; Yang, Chun-Liang ; Wu, Jingshown
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
fDate :
7/1/2009 12:00:00 AM
Abstract :
A newly constructed code family named two-dimensional diluted perfect difference codes (2-D DPD codes) and a corresponding architecture for the optical code division multiple access (OCDMA) system are proposed in this paper. The 2-D DPD codes are derived based on the perfect difference set and the dilution method for the spectral and spatial coding application. The 2-D DPD codes have the multiuser interference (MUI) cancellation and the phase-induced intensity noise (PIIN) suppression properties. In comparison with the other 2-D codes, such as the modified quadratic congruence codes (MQC codes), the maximal-area matrices codes (M-matrices codes), or the 2-D perfect difference codes (2-D PD codes), the analytical calculation and the simulation results show that the systems with the 2-D DPD codes have better performance. The proposed system can accommodate much more total number of simultaneous users at the same bit error rate.
Keywords :
code division multiple access; codes; error statistics; interference suppression; optical fibre networks; 2D diluted perfect difference codes; bit error rate; maximal-area matrices codes; modified quadratic congruence codes; multiuser interference cancellation; noncoherent spatial optical CDMA system; noncoherent spectral optical CDMA system; phase-induced intensity noise suppression; Diluted perfect difference (DPD) codes; maximal-area matrices codes; modified quadratic congruence (MQC) codes; multiuser interference; optical code division multiple access (OCDMA); perfect difference (PD) codes; phase-induced intensity noise (PIIN);
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2008.2010721
