Title :
Performance of radio on fibre for microcellular GSM networks
Author :
Al-Raweshidy, H.S. ; Galbrith, D. ; Prasad, R.
Author_Institution :
Centre for Commun. Networks Res., Manchester Metropolitan Univ., UK
Abstract :
This paper presents a GSM-specific assessment of the performance of a radio-on-fibre link between a remote antenna unit and GSM base station. The intermodulation distortion (IMD) has been analysed for a system using the subcarrier multiplexing (SCM). A novel technique using direct sequence spread spectrum is proposed to minimise the IMD by decreasing the signal amplitude prior to the direct modulation of the laser diode. The results show that the optical fibre microcellular system is outperforming the full wireless system
Keywords :
cellular radio; interference suppression; intermodulation distortion; optical fibre networks; optical modulation; subcarrier multiplexing; GSM base station; IMD; direct modulation; direct sequence spread spectrum; intermodulation distortion; laser diode; microcellular GSM networks; optical fibre microcellular system; performance; radio-on-fibre link; remote antenna unit; signal amplitude; subcarrier multiplexing; Frequency conversion; Frequency modulation; GSM; Laser modes; Laser noise; Optical distortion; Optical fibers; Semiconductor device noise; Semiconductor lasers; Spread spectrum communication;
Conference_Titel :
Vehicular Technology Conference, 1998. VTC 98. 48th IEEE
Conference_Location :
Ottawa, Ont.
Print_ISBN :
0-7803-4320-4
DOI :
10.1109/VETEC.1998.686602
