Now showing items 1-10 of 13
Measurements, analysis and modeling of the performance of direct detection receivers with an optical preamplifier
(Virginia Tech, 1993-07-16)
In the last few years, erbium-doped fiber amplifiers (EDFAs) have been investigated extensively both for their superior amplification characteristics and their applicability to future optical fiber communication systems. ...
The effects of noise in CATV distribution networks with star couplers and fiber amplifiers
(Virginia Tech, 1994-09-07)
An Improved Approach to Fault Tolerant Redundant Fiber Optic Ring Design for Polled Data Networks
(Virginia Tech, 2000-02-24)
This research investigates alternate methods of implementing a redundant communications ring for polled network applications. FDDI and a unique solution (the tone method) designed specifically for this application are ...
Survivability Analysis of Two Specific 16-Node, 24-Link Communication Networks
(Virginia Tech, 1998-07-15)
A highly survivable communication network is desirable, as service disruption is usually not tolerated. In this thesis we mainly investigate and discuss the survivability of two specific communication networks, termed ...
Effect of Dispersion on SS-WDM Systems
(Virginia Tech, 1998-09-18)
The purpose of this thesis is to investigate the effect of dispersion on a spectrum-sliced WDM (SS-WDM) system, specifically a system employing a single-mode optical fiber. The system performance is expressed in term of ...
Fiber-Based ATM Computer Network Performance and Survivability Issues under Soft Failure Conditions
(Virginia Tech, 1999-08-12)
In this research a suspected "gray" area in computer network performance that might exist between the network's optimum performance and complete network failure was investigated. Changes in performance were studied as seen ...
Modeling and Analysis of the Effects of Impairments in Fiber Optic Links
(Virginia Tech, 1999-09-14)
In digital communication systems, several types of impairments may be introduced to the signal. These impairments result in degraded system performance; for example, high bit-error-rate or power penalty. For optical ...
Low frequency cutoff effects in fiber optic communication systems
(Virginia Tech, 1988-05-05)
<p> The presence of low frequency cutoffs in the forward path of the information signal leads to inter-symbol interference (ISI) and degradation of the signal to noise ratio at the sampling instant in digital on-off ...
Survivability of interconnected ring networks
(Virginia Tech, 1993-09-05)
<p><i>Survivability</i> is a means of introducing redundancy in a network architecture which is utilized to maintain communication capability under failure conditions. The need for survivability exists in most communication ...
Selective cancellation of interference for CDMA
(Virginia Tech, 1996-01-11)
<p>Recently, it has been shown that Multiple Access Interference (MAl) cancellation is a promising technique for improving the performance and capacity of the reverse link in a Code Division Multiple Access (CDMA) cellular ...