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The mobile nodes in a network which can communicate with each other through a radio wave without any specific infrastructure is widely known as Mobile Ad-hoc Network(MANET). MANET has a number of routing protocols. The popular routing protocols so far are Dynamic Source Routing (DSR), Destination Sequenced Distance Vector (DSDV), Ad-hoc On-demand Distance Vector (AODV) and Temporally-ordered Routing Algorithm (TORA) routing protocol. Among them the AODV routing protocol meets efficiently with the ad-hoc network specification.
This paper presents the generation of optical carrier suppressed signal for RoF system. RoF refers to an analog transmission over fiber technology where light is modulated by radio frequency (RF) signal and transmitted over an optical fiber link to wireless access. Both optical carrier suppression and signal modulation are made by using a Dual-Drive Mach-Zehnder modulator (DD-MZM). Suppressed carrier modulation is achieved by biasing at the null point of DD-MZM. Optical carrier suppression improves the performance of RoF system such as link gain and noise figure (NF).In this research, a single RF at 2100 MHz having data rate of a 1 Gbps modulates the 1550.12 nm optical carrier in the DD-MZM. In this paper, the carrier suppression and performances of RoF system are investigated by theory and simulation. The various values of optical carrier suppression ratio can be obtained by adjusting the extinction ratio of the DD-MZM.
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Radio Host, Trish Twilley Will be One of Nine Celebrities at Dancing With the Stars of Cobb County
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