Performance analysis of star-tree and ring-bus millimeter-wave fiber-radio networks incorporated with cascaded WDM optical interfaces

The performance of wavelength-division-multiplexed (WDM) optical interfaces that support 37.5 GHz-band 25 GHz-separated wavelength-interleaved dense-WDM (WI-DWDM) signals is investigated for networks in both star-tree and ring/bus architectures. The interface offers consolidated base station (BS) architecture by enabling a wavelength reuse technique with transparent optical-add-drop-multiplexing (OADM) to the BS. The results show that the proposed interface can be a suitable candidate in future WI-DWDM mm-wave fiber-radio networks, configured in either star-tree or ring/bus architecture.