Abstract-Interferometric crosstalk has been identified as the cause of performance limits in future transparent all-optical networks. A large number of studies have been conducted on this phenomenon using a vast array of evaluation techniques. However, most major studies have considered that although the interfering terms may differ in number, the power contribution that they all make will be identical for all interfering terms. Although this situation is easy to analyze, it does not necessarily represent the situation that is likely to occur in a real network, which will be constructed of nodes with different degrees of connectivity, quite possibly from different vendors, and therefore with differing crosstalk characteristics. This paper describes a study on the impact of unequally powered interfering terms using a rigorous analysis technique. To validate the use of the chosen technique, the paper begins by benchmarking a number of common evaluation techniques against empirically derived, experimentally verified noise performance formulas.
There has been a remarkable take up of wireless and mobile communications in recent years, such that in a number of countries the number of mobile phones now exceeds the number of xed network connections. Alongside this, we are seeing dramatic growth in data on the network compared with voice: the so-called`data wave'. While much mobile network tra¯c is currently voice there is increasing use of the available data facilities with these now being enhanced (e.g. via evolution of the global system for mobile communications and subsequently the introduction of`third-generation' systems such as the universal mobile telecommunications system). Accordingly, there is considerable interest and activity in the research community concerning possible technologies exploiting yet higher frequencies where truly broadband future wireless networks may be realized. This paper will review some of the technology options currently available or under examination for millimetre-wave broadband wireless networks and will go on to consider in some detail a speci c example of` xed-wireless' technology synergies exploiting radio-over-bre techniques to achieve ®exible, recongurable broadband wireless networks.
In recent years there have been rapid advances in the techniques to generate and transport radio signals over optical fibre, however very little has been done to date to develop the concept of a full duplex, multi-wavelength, radio -over-fibre network architecture that intrinsically supports and facilitates the dynamic reconfiguration of the wireless network. Recently the development of suitable architectures has received attention, with some approaches concentrating on the fibre radio link layer [ 1] and others focusing on the optical WDM layer [2,3]. Here we present for the first time an approach which aims to vertically integrate the cellular radio layer, the fibre radio layer, the optical networking layer and the physical layer to achieve a network architecture that enables the dynamic reconfiguration of the cellular wireless network layer.OSIC Code: 060.2330
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