Abstract
We investigate the problem of streaming multiplevideos over multi-hop cognitive radio (CR) networks.Fine-Granularity-Scalability (FGS) and Medium-Grain-Scalable(MGS) videos are adopted to accommodate the heterogeneityamong channel availabilities and dynamic network conditions.We obtain a mixed integer nonlinear programming (MINLP)problem formulation, with objectives to maximize the overallreceived video quality and to achieve fairness among the videosessions, while bounding the collision rate with primary usersunder the presen ....etc

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Generation of linearized optical single sideband signal for broadband radio over fiber systems
Radio over fiber (RoF) technique shows advantages in- cluding low loss, high bandwidth, and immunity against gelectromagnetic interference. In most RoF systems, in- put radio frequency (RF) signals are carried on optical carriers via intensity modulation (IM) and recovered after transmission using direct detection (DD) by photodetec- tors (PDs). Generally, LiNbO3 Mach-Zehnder modula- tors (MZMs) are utilized for IM/DD links. However, harmo ....etc

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sir please provide me ppts &project report on radio over fiber topic. ....etc

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please provide ppts on radio over fiber and also project report onit

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I have apresentation on hybrid access networks where i need explanation on Rof ....etc

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1.1 Wireless Communication Systems
Wireless communication has experienced tremendous growth in the last decade. In
1991 less than 1% of the world’s population had access to a mobile phone. By the
end of 2001, an estimated one in every six people had a mobile phone . During the
same period the number of countries worldwide having a mobile network increased
from just three to over 90%. In fact the number of mobile subscribers overtook the
number of fixed-line subscribers in 2002, as shown in Figure 1.1. It is predicted that
th ....etc

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Presented by:
Bart Lannoo, Didier Colle, Mario Pickavet, Piet Demeester

Abstract

Broadband access in a train environment is a topic which requires still a lot of research. It is especially the combination of fast moving users and high data rates which is still difficult to realize. In our proposed network architecture, we will make use of a reconfigurable Radio-over-Fiber network, which implements a moveable cell concept. By means of a case study, we will evaluate the total concept.

Introduction[/b ....etc

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Presented by:
Jean-Paul M.G. Linnartz

Introduction

OFDM: a form of MultiCarrier Modulation.
Different symbols are transmitted over different subcarriers
Spectra overlap, but signals are orthogonal.
Example: Rectangular waveform -> Sinc spectrum

For more details , please visit
http://wireless.per.nl/reference/ppt/eesi/dsp.ppt ....etc

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Introduction To Ham Radio Circuit Audio Filter

One of the earliest mode of radio communications is the use of Morse Code on a continuous wave carrier(CW) which is interrupted to generate a DIT and DAH in forming an alphabet. Though it looks simple, this method is often make less reliable as the surrounding man-made noise and atmospheric noise caused interference to the receiver station. This project will help to filter out the interference signal and ensure that the signal received from the Morse code station stand out.




Circuit Des ....etc

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presented by:
K.Raghava Vamsi
L.Naga prasad


ROF net-Transmission of RF Signals over Optical Fibers Using Radio Over Fiber Technology
Abstract- Radio over fiber technology is a combination of wireless and fiber optic networks, is an essential and emerging technology in the field of wireless communications, which can be used in a range of applications including the extension of existing radio coverage and capacity. Obviously, we ....etc

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