Fiber Bandwidth Utilization Research Articles

ROF V/s Traditional Fiber as a Backhaul Technology: Comparisons of Cellular and Ethernet Networks based on SNR and Capacity

over Fiber is the future technology. It will take over all traditional fiber technology, as it offers quality and service up to the requirement of the users. The ROF is being implemented over traditional fiber widely as it offers replacing of optical fiber's high range and also flexible in wireless mode. Along with the ease, optical fiber bandwidth utilization increase by this. Because fiber is a high bandwidth, low latency, and a scalable solution therefore it is mostly used as a backbone technology in wireless Ethernet and cellular networks. Radio over Fiber technology, it is amalgamation of radio waves and optical based networks and it is an emergent feasible solution for providing high capacity and wireless connectivity, meanwhile reducing costs in the network which is accessible. The purpose of this research is to conduct a comparative study on implementation of ROF over wireless Ethernet network and cellular networks. Recently fiber optics has become a standard medium for these heterogeneous networks and introducing radio technology over this medium can prove to be the next generation solution. SNR and Capacity are the parameters that are critically evaluated for the purpose of comparative study on currently implemented fiber with ROF over these heterogeneous networks. Then comparative study is used to identify ROF is a feasible alternative as compared to traditional fiber as the backbone technology. A modeled ROF and optical fiber network is deployed over MATLAB for acquiring the desired results through simulation to prove the hypothesis. In future some other heterogeneous networks and several parameters like bit error rate and carrier to noise ratio can be analyzed on radio over fiber. A prototype of such an implementation will be proposed and design for small scale deployment to observe the behavior of radio over fiber in terms of aforementioned parameters.

An efficient access protocol and a node multi-buffer architecture for bandwidth utilization improvement in WDM ring MANs

In this paper we study a slotted WDM ring network architecture with a suitable access protocol that avoids both data channels collisions and destination conflicts and decreases the packets dropping probability. Our intention is to increase throughput and to decrease transmission delay. The key idea of this paper is the exploitation of a number of buffers at each access node, in conjunction with the appropriate allocation of the incoming traffic among them and the effective decision algorithm for the appropriate buffer selection for transmission. Simulation results approximate the necessary number of buffers at each access node that maximizes the fiber bandwidth utilization.

An input traffic allocation strategy and an efficient transmission technique for collisions-free WDM ring MANs

This paper presents a wavelength division multiplexing multi-ring architecture with a separate control wavelength for metropolitan area networks. We study the critical problem of low fiber bandwidth utilization that many access ring protocols introduce, especially at high load conditions. In our study this problem is effectively faced by: (1) applying an efficient slotted access algorithm to avoid both data wavelengths and receiver collisions, (2) introducing a number of buffers at each node to effectively allocate the incoming traffic into them, and (3) applying an efficient algorithm for buffer selection for transmission that combines the priority criteria of packet age and receiver collisions avoidance. In this way, we obtain maximum fiber bandwidth utilization. Especially, our aim is to achieve not only significant throughput enhancement, but also essential dropping probability and total delay reduction. Also, the number of transmission buffers per node is investigated in order to manage maximum throughput improvement, while considering the financial cost. Finally, a discrete-event simulation model based on Poisson statistics is developed for the performance measures evaluation.