Abstract
In this letter we propose an optical code-division multiple access (CDMA) system based on amplitude spectral encoding of low-cost broadband sources such as light-emitting-diodes. The proposed system uses a standard nondispersive lens-grating apparatus, and simple direct-detection receivers. We show that by assigning to N subscribers the N cycles shifts of a single unipolar m-sequence of period N, complete orthogonality between the users can be achieved, provided that the spectrum is properly equalized. We show that without any equalization, and for N = 511, up to 200 users can transmit asynchronously with an average error probability equal to 10−9, depending on the received power level. An aggregate network throughput of 100 Gb/s can therefore be obtained.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 479-482 |
| Number of pages | 4 |
| Journal | IEEE Photonics Technology Letters |
| Volume | 5 |
| Issue number | 4 |
| DOIs | |
| State | Published - Apr 1993 |
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Electrical and Electronic Engineering