Abstract
Performance of optical asynchronous code-division multiple-access (CDMA) systems with double optical hard-limiters is analyzed in the presence of avalanche photodiode (APD) noise and thermal noise. The following effects on the optimal thresholds of double optical hard-limiters and on-off keying (OOK) decoder are clarified: sequence codes, the number of users, the received laser power, and the modulation extinction ratio. The results show that the optical asynchronous CDMA systems with double optical hard-limiters have good performance in the presence of the APD noise and the thermal noise even when the number of simultaneous users is large. Moreover, the optical asynchronous CDMA systems with double optical hard-limiters are shown to be practical in the respect of setting optimal thresholds.
| Original language | English |
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| Pages | 3233-3238 |
| Number of pages | 6 |
| Publication status | Published - 1998 Dec 1 |
| Externally published | Yes |
| Event | Proceedings of the IEEE GLOBECOM 1998 - The Bridge to the Global Integration - Sydney, NSW, Aust Duration: 1998 Nov 8 → 1998 Nov 12 |
Other
| Other | Proceedings of the IEEE GLOBECOM 1998 - The Bridge to the Global Integration |
|---|---|
| City | Sydney, NSW, Aust |
| Period | 98/11/8 → 98/11/12 |
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Global and Planetary Change