IJSRP, Volume 3, Issue 6, June 2013 Edition [ISSN 2250-3153]
Sonal Job, A.K Jaiswal, Mukesh Kumar
There are variety of applications where optical fibers are not feasible, to provide ubiquitous wireless services quickly and more effectively , then in such cases RoFSO links can be used to transmit signals. But inspite of its potential, such links are highly vulnerable to fluctuating atmospheric conditions and also dependent on the deployment surrounding characteristics in particular the weather conditions, severity and duration of the atmospheric effects have direct impact on the availability of the links as well as on the quality of RF signal transmitted over it. Whereas the Radio over Fiber (RoF) technology, as a means of transferring radio signals using optical fibers without changing radio format, has become a candidate for the common platform for wireless access networks. This technology provides a simplified and cost-effective radio access network and supports high-speed multimedia to satisfy the increasing demand when the radio spectrum is limited. It also helps to increase transmission capacity and distance of wireless. However, the applicability of this solution greatly depends on the availability of fiber cable infrastructure and installation costs. Therefore to have communication systems which has low cost, simple, is easy to install, and can be increasingly deployed to offer high-speed, broadband communications links with an ease to provide high-speed communications without the difficulty and cost of deploying optical fiber cable . A heterogeneous structure made up of RoFSO and RoF can be an attractive means for RF signal transmission, providing a versatile role of both wire and wireless system for an optical communication. This suggests us that if a compliance between the two , RoFSO and RoF is made that is the places where there is difficulty in deployment of the RoFSO then the RoF can be used and vice-versa, then there becomes lesser possibility of link failure and hence an improved availability of link can be achieved.