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Spread Spectrum Technique to Improve the Performance of Radio over Fibre for Microcellular GSM Networks

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Abstract

This paper presents a GSM-specific assessment of the performance of a radioover fibre link between a remote antenna unit and GSM base station. Theintermodulation distortion (IMD) has been analysed for a system using thesubcarrier multiplexing (SCM). A novel technique using direct sequence spreadspectrum is proposed to minimize the IMD by decreasing the signal amplitudeprior to a direct modulation of a laser diode. The results show that theoptical fibre microcellular is outperforming the full wireless system.

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Al-Raweshidy, H., Prasad, R. Spread Spectrum Technique to Improve the Performance of Radio over Fibre for Microcellular GSM Networks. Wireless Personal Communications 14, 133–146 (2000). https://doi.org/10.1023/A:1008957200405

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