Micromachined coplanar transmission lines in a GaAs technology

✍ Scribed by O. Dupuis; J. Carbonell; P. Mounaix; O. Vanbésien; D. Lippens

• Book ID: 101268376
• Publisher: John Wiley and Sons
• Year: 1999
• Tongue: English
• Weight: 178 KB
• Volume: 20
• Category: Article
• ISSN: 0895-2477
• DOI: 10.1002/(sici)1098-2760(19990120)20:2<106::aid-mop7>3.0.co;2-u

✦ Synopsis

For low values of the channel modulation index, the performance is affected by Gaussian noise contributions due to shot noise, thermal noise, and laser RIN. For a wide range of m , the system performance turns out to be interference d limited and the BER maintains substantially constant. For higher values of the channel modulation index, the performance is affected by clipping impulsive noise that introduces an abrupt threshold in the BER curves.

V. CONCLUSIONS

Hybrid fiber-cellular radio networks and CDMA techniques can lead to a more effective exploitation of the available radio spectrum for microcellular coverage and to meet the increasing demand of mobile radio communication services. In this hybrid network, the base station can be connected to the cell antenna by an optical fiber remote, in the design of which the nonlinear behavior of the semiconductor laser must be carefully considered. In this letter, the effect due to clipping impulsive noise of the laser diode on the performance of CDMA systems is evaluated to obtain useful information about the design of hybrid fiber-radio networks.