PERFORMANCE ANALYSIS OF HYBRID OPTICAL-WIRELESS ACCESS NETWORK PHYSICAL LAYER

The hybrid optical-wireless access network (howan) is a favorable architecture for next generation access network. it is an optimal combination of an optical backhaul and a wireless front-end for an efficient access network. in this paper, the new architecture of the howan is proposed and designed based on both a wavelengths division multiplexing/time division multiplexing passive optical network (wdm/tdm pon) at the optical backhaul and a worldwide interoperability for microwave access (wimax) technology at the wireless front-end. it is demonstrated 2 gb/s for downstream/upstream can be achieved at optical backhaul along 20 km of single mode fiber (smf) for each wavelength channel with bit error rate (ber) of 10^-9, at a data rate of 30 mb/s per base station (bs) along a 5 km outdoor wireless link with ber of 10^-5.