Title :
Optical wavelength/spatial coding system based on quadratic congruence code matrices
Author_Institution :
Dept. of Comput. & Commun., Kun Shan Univ., Tainan Hsien
Abstract :
This letter proposes a wavelength/spatial optical code-division multiple-access system based on quadratic congruence code matrices (QCCM). According to the in-phase cross-correlation of the QCCM, multiple-access interference can be fully eliminated by using balanced photodetectors (PDs). Moreover, this proposal provides greater signal power than does the modified quadratic congruence (MQC) coding system. Compared with the maximal-area matrices (M-matrices) and MQC coding system, the simulated results indicate that the proposal can remarkably improve the system performance in the receiver PDs
Keywords :
code division multiple access; encoding; matrix algebra; optical fibre communication; photodetectors; cross-correlation; maximal-area matrices; multiple-access interference; optical code-division multiple-access; photodetector; quadratic congruence code matrix; Bandwidth; Decoding; Multiaccess communication; Multiple access interference; Optical noise; Optical receivers; Phase noise; Photodetectors; Proposals; System performance; Multiple-access interference (MAI); optical code-division multiple-access (OCDMA); phase-induced intensity noise (PIIN);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2006.881210
