Complementary Walsh–Hadamard coded optical CDMA coder/decoders structured over arrayed-waveguide grating routers
✍ Scribed by Jen-Fa Huang; Chao-Chin Yang; Shin-Pin Tseng
- Publisher
- Elsevier Science
- Year
- 2004
- Tongue
- English
- Weight
- 233 KB
- Volume
- 229
- Category
- Article
- ISSN
- 0030-4018
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✦ Synopsis
In this paper, an optical code-division multiple-access (OCDMA) system with complementary Walsh-Hadamard coded optical encoder/decoder configuration structured over arrayed-waveguide grating (AWG) routers is examined. In the proposed system, each network user requires only two AWG routers to accomplish spectral encoding and decoding for complementary keying, thus, resulting a simpler and low cost system. Performance of the proposed system is analyzed by taking the effect of phase-induced intensity noise into account. The result indicates that the established system not only preserves the capability of suppressing multiple-access interference (MAI), but also improves bit-error-rate performance as compared to the conventional coders employing simple on-off keying.