1.
Opt Express
; 15(19): 12252-7, 2007 Sep 17.
Artículo
en Inglés
| MEDLINE
| ID: mdl-19547593
RESUMEN
We have experimentally demonstrated two novel pulse position modulation techniques, namely Double Pulse Position Modulation (2-PPM) and Differential Pulse Position Modulation (DPPM) in Time-Wavelength OCDMA systems that will operate at a higher bit rate compared to traditional OOK-OCDMA systems with the same bandwidth. With 2-PPM technique, the number of active users will be more than DPPM while their bit rate is almost the same. Both techniques provide variable quality of service in OCDMA networks.
2.
Opt Express
; 15(25): 16442-7, 2007 Dec 10.
Artículo
en Inglés
| MEDLINE
| ID: mdl-19550934
RESUMEN
We experimentally demonstrate a transmission scheduling algorithm to avoid congestion collapse in O-CDMA networks. Our result shows that transmission scheduling increases the performance of the system by orders of magnitude.