Optical access networks are the ultimate solution to the problem of the last mile bottleneck between high-capacity metro networks and customer premises, capable of delivering future integrated broadband services. Nowadays, passive optical networks are the most promising and cost-effective class of fiber access systems. This rapid evolvement of fiber in access networks motivates the study of the...

Recent research activities about hybrid optical wireless networks become attractive. In this paper, we provide an overview on integration of an Ethernet passive optical network (EPON) and a worldwide interoperability for microwave access (WiMAX) network. Gateway node that integrates both optical scheduling and wireless scheduling functions gains most interests. We promote a question: how the sc...

Passive optical networks are widely used because of their sufficient bandwidth and low price of individual elements. Based on the European Commission, The Czech Republic ISPs have to ensure 30 Mbit/s (in existing networks) and 100 Mbit/s (in new constructed networks) for each customer in selected areas till 2020. Nowadays, the GPON standard is dominating in the Europe due to its low price and m...

We consider passive all-optical networks using wavelength division multiplexing and wavelength routing, i.e. the path of a signal is determined by the wavelength of the signal and the signal origin. We present upper and lower bounds on the required number of wavelengths to achieve a given blocking probability. Speciically we show that between ?p M (1?P b) and O ?p M wavelengths are required to ...

This paper introduces various techniques for a new fronthaul network segment applied in centralized radio access networks (C-RAN) architecture. The promising fronthaul interfaces are described which are considered to meet physical requirements for the fronthaul network segment and to build a new radio access network solution. Various optical solutions including CPRI (Common Public Radio Interfa...