Reference frequency signal transmission over optical fiber for CDMA-based microcellular system

Abstract

The performance of the frequency stability and the phase noise was described when the reference frequency signal is distributed through the optical passive double star network for a CDMA microcellular system. We calculate and measure the short-term frequency stability and phase noise. In our experiments, the frequency of the RF CDMA signal centered at 892.14 MHz was maintained within /spl plusmn/5/spl times/10/sup -8/ stability. Up to 24 CDMA carriers and a control signal were transmitted with the reference signal without violation of IS-97 standards.