Dispersion Effects in Millimeter-Wave Fiber-Radio Systems Employing Direct-Sequence Code Division Multiple Access
✍ Scribed by G.H. Smith; A. Nirmalathas; J. Yates; D. Novak
- Publisher
- Elsevier Science
- Year
- 1999
- Tongue
- English
- Weight
- 181 KB
- Volume
- 5
- Category
- Article
- ISSN
- 1068-5200
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✦ Synopsis
We investigate the impact of fiber chromatic dispersion on the performance of an externally modulated millimeter-wave fiber-radio system incorporating a broadband radio direct-sequence code division multiple access Ž . DS-CDMA scheme. In particular, we investigate the effect of dispersion on DS-CDMA signals with regard to CDMA code rate, center frequency, and modulator chirp. We show that the spreading of the signal spectrum using DS-CDMA can result in significant reductions in data amplitude variations normally experienced in externally modulated millimeter-wave fiber-radio systems. We also demonstrate the successful transmission of a 10-Mbrs data channel over a 39-GHz fiber-radio link employing DS-CDMA and consisting of 25 km of standard optical fiber and a 1-m radio link.