Turbo TCM Coded OFDM Systems for Non-Gaussian Channels



I. INTRODUCTION
Orthogonal Frequency Division Multiplexing (OFDM)
modulation has been a promising solution for efficiently
capturing multipath energy in highly dispersive UWB channels
and delivering high data rate transmission. The main
idea behind OFDM is to split the transmitted data sequence
into N parallel sequences of symbols. The transmission is
carried out in parallel on different frequencies which is a
desirab ....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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Orthogonal frequency Division Multiplexing (OFDM) is multicarrier transmission technique. OFDM is a communication technique that divides the communication channel into a number of equally spaced frequency bands. A sub carriers a portion of the users information in each band. Each sub carriers is orthogonal (Independent of each other) with every other sub carrier. OFDM efficiently squeezes multiple modulated carriers tightly together reducing the required bandwidth.OFDM was invested in 1960 s, only recently it has recognized as an excellent met ....etc

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please provide me the bstract and ful details of this project. ....etc

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ABSTRACT
Orthogonal frequency Division Multiplexing (OFDM) is
multicarrier transmission technique. OFDM is a communication technique
that divides the communication channel into a number of equally spaced
frequency bands. A sub carriers a portion of the users information in
each band. Each sub carriers is orthogonal (Independent of each other)
with every other sub carrier. OFDM efficiently squeezes multiple
modulated carriers tightly together reducing the required bandwidth.
OFDM was invested in 1960 s, ....etc

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Abstract

Wireless technology has become the most exciting area in telecommunication and networking. The rapid growth of mobile telephone use, various satellite services, and now the wireless Internet are generating tremendous changes in telecommunications and networking. Wireless is convenient and often less expensive to deploy than fixed service, but wireless is not perfect. There are limitations, political and technical difficulties that may ultimately prevent wireless technologies from reaching their full potential. Regardless of t ....etc

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To get full information or details of Adaptive modulation Performance of wideband OFDM communications please have a look on the pages

http://seminarsprojects.net/Thread-wideband-ofdm?pid=460&mode=threaded

http://seminarsprojects.net/Thread-wideband-ofdm-full-report?pid=51435&mode=threaded

http://seminarsprojects.net/Thread-orthogonal-frequency-division-multiplexing-full-report

http://seminarsprojects.net/Thread-wideband-ofdm-full-report

if you again feel trouble on Adaptive modulation Performance of wideband OFDM communications please re ....etc

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Orthogonal frequency Division Multiplexing (OFDM) is multicarrier transmission technique. OFDM is a communication technique that divides the communication channel into a number of equally spaced frequency bands. A sub carriers a portion of the users information in each band. Each sub carriers is orthogonal (Independent of each other) with every other sub carrier. OFDM efficiently squeezes multiple modulated carriers tightly together reducing the required bandwidth.OFDM was invested in 1960?s, only recently it has recognized as an excellent meth ....etc

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Use of Honey-pots to Detect Exploited Systems Across Large Enterprise Networks



Security a serious problem

Methods for detection/protection/defense:

-Firewall: The Traffic cop
-IDS: detection and alert
These have shortcomings:

-Internal threats
-Virus laden programs
-False Positives and False negatives ....etc

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sir i need ppt for simulation and bit error rate analysis of 4g ofdm systems by using different modulation schemes like qam,qpsk,bpsk ....etc

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