Search or add a thesis

Advanced Search (Beta)
Home > Design & Analysis of Secure Optical Communication System With Advance Modulation Formats

Design & Analysis of Secure Optical Communication System With Advance Modulation Formats

Thesis Info

Access Option

External Link

Author

Qamar, Farhan

Program

PhD

Institute

University of Engineering and Technology

City

Taxila

Province

Punjab

Country

Pakistan

Thesis Completing Year

2018

Thesis Completion Status

Completed

Subject

Telecommunication

Language

English

Link

http://prr.hec.gov.pk/jspui/bitstream/123456789/10089/1/Farhan%20Qamar_Telecom%20Engg_2018_UET%28T%29_29%20Jan%202019.pdf

Added

2021-02-17 19:49:13

Modified

2024-03-24 20:25:49

ARI ID

1676727725644

Similar


The growth in web traffic has driven the rise in demand for information measure and high data rates. ‘Advance optical modulation formats’ are taken into account as a promising feature to satisfy the enhanced demand for information measure in broadband and other type of services. Lots of modulation formats have been proposed to increase the data rates but security implementation in optical communication system explicit to these modulation formats is still an open area to explore. In this thesis, the performance of some advance modulation formats as applicable to chaotic/secure optical communication is analyzed. The research work includes the generation of high bandwidth optical chaos through semiconductor lasers by controlling different parameters to get the optimum chaos. Initially, the basic chaotic communication system by synchronizing transmitted and received chaos is developed and tested for ordinary modulation schemes like RZ and NRZ to check validity of the scheme. Later, the long haul secure communication models based on Duobinary modulation and QAM format are designed and their performance is tested against various parameters. The Duobinary format is chosen due to its effective bandwidth utilization and robust performance against the intersymbol interference whereas QAM scheme is selected due to its better support against high data rates. In comparison to chaos produced by fiber lasers which are inherited by low bandwidth, semiconductor laser generated chaos is exploited for embedding the message. The performance of modulation schemes is studied for long distance communication models including non-linear and higher order effects. Various simulations experiments are conducted on latest versions of Optisystem 14.0 and MATLAB. This work can be vii considered as a first effort related to security implementation explicit to the advance modulation formats using optical chaos.
Loading...
Loading...

Similar Books

Loading...

Similar Chapters

Loading...

Similar News

Loading...

Similar Articles

Loading...

Similar Article Headings

Loading...

غلام نبی مہجور

غلام نبی مہجور(۱۹۴۸۔۱۸۸۰) پسرور ضلع سیالکوٹ میں پیدا ہوئے۔ اصل نام غلام نبی اور مہجورؔ تخلص کرتے تھے۔ (۲۰۰) پنجاب یونیورسٹی سے مہجور نے منشی فاضل کا امتحان پاس کیا اور بدوملہی سکول میں اردو عربی کے استاد مقرر ہوئے۔ اسی ملازمت کے دوران آپ احمدیہ جماعت میں شامل ہو گئے اور تبلیغی خدمات سر انجام دینے لگے۔ آخری عمر میں احمدیہ مسلک سے کنارہ کش ہو گئے۔ (۲۰۱) مہجور کا بیشتر کلام روزنامہ ’’احسان‘‘ اور ’’شباب‘‘ میں چھپتا رہا۔ آپ کی مولانا عبد المجید سالک اور آغا حشر کاشمیری سے اچھی وابستگی تھی۔

قاضی عطاء اﷲ عطا اپنی کتاب ’’شعرائے پسرور‘‘ میں مہجور کی ادبی محفلوں میں شرکت کے بارے میں لکھتے ہیں:

بچپن ہی سے شاعری کے جراثیم آپ کے وجود میں موجود تھے جو آہستہ آہستہ پرورش پا کر بڑے جسیم اور توانا بن کر مختلف مشاعروں اور محافل میں اپنی قوت کا لوہا منوا چکے تھے۔ لہذا کانپور اور رمتھرا کے آل انڈیا مشاعروں میں جہاں سیمابؔ‘ فارغؔ‘ صبا ؔاور جگرؔ وغیرہ شریک ہوتے۔ آپ کا کلام اعلیٰ ترین حسنِ تغزل کو لئے سیماب جیسے شعراء کو سیماب پا کر دیتا۔(۲۰۲)

بہت کوشش کے باوجود مہجور کا مکمل کلام بازیاب نہیں ہو سکا۔ کچھ غزلیات اور نظمیں ’’تاریخِ پسرور‘‘ اور ’’شعرائے پسرور‘‘ سے دریافت ہوئی ہیں۔

مہجور کی رباعیات اور غزلیات کے مطالعہ سے واضح ہوتا ہے کہ خدا کا شکر‘ حمد و ثنا‘ تقدیر و قسمت اور مسلمانانِ برصغیر کی حالتِ زار مہجور کی شاعری کے اہم موضوعات ہیں:

جہاں میں خواجگی اور بندگی تقسیمِ فطرت ہے                 عطائے بے سبب پر شکر رحماں کر رہا ہوں میں             

کوئی حاسد نہ مانے خواجگی میری تو نہ مانے                      عدو کو صورتِ سیماب لرزاں کر رہا ہوں میں (۲۰۳)

سلطنت کی کچھ...

فقہ اسلامی اور مغربی قانون کی روشنی میں حقوق دانش کے قوانین کاتحقیقی مطالعہ

Islam always emphasizes to use legal ways and means of earning. In contrary the legal and illegal sources of income have been explained in detail. The “Right of invention” is one of the most discussed issues among the Islamic Jurists. This right is related to the intellectual skills and capabilities of people. However, internationally intellectual property is a known concept that associates with right of publication, right of trademark, patent and right of goodwill et cetera. However, research must be conducted on inquiring rights of intellectual property in Islamic Sharia and comparison of these rights with those in Western laws. In this paper the historical review of the intellectual properly has been presented. Similarly, those various types and concerned ruling have been discussed in contrast with the Islamic and western law on descriptive research methods.

The Camparative Efficacy of Garlic and Other Selective Natural Product Extracts As Quorum Sensing Inhibitors Qsi Effective Against Biofilm Producing Pseudomonas Aeruginosa

Pseudomonas aeruginosa is an opportunistic pathogen of humans, animals as well as of plants. It is the most common Gram-negative bacterium found in nosocomial infections. Pseudomonas associated biofilms are highly resistant to high doses of antibiotics. Recent discoveries of quorum quenching (QQ) mechanisms use quorum sensing (QS) as a potential antimicrobial target. Interference with QS can be a novel and effective tool to manage recalcitrant pathogenic microbes. Therefore, the aim of the present study was to monitor the biofilm formation in P. aeruginosa and to examine the efficacy of garlic extract as antipathogenic drugs in selective P. aeruginosa strains. To achieve this goal we investigated the effect of garlic extract and other compounds on P. aeruginosa quorum sensing in terms of biofilm formation. For this purpose, local identified strain (Pseudomonas aeruginosa strain BTP1 (KU534099) and Pseudomonas aeruginosa strain WPP1 (KU534100)) of P. aeruginosa was used. Biofilm formation of P. aeruginosa was determined through tube method, congo red medium and microtitration plate method. Then the N-acyl homserine lactone (N-AHL) autoinducers of P. aeruginosa were detected through biosensors. Garlic (Allium sativum) extract and other selected natural plants extracts like moringa (Moringa oleifera), neem (Azadirachta indica) were tested as quorum sensing inhibitor (QSI) for P. aeruginosa through N-AHL interference assay, pigment inhibition assay, swarming inhibition assay and biofilm inhibition assay. The results outcomes of present study showed that P. aeruginosa infections were found in above-mentioned hospitals with frequency 13.5% (AH), 9% (DHQ) and 7.5% (NH). P. aeruginosa isolates recovered from following sources with a significant rate throat infections (14.7%), wounds (13.3%), hospital instruments (8.6%) and soil (3.3%). Pyocyanin production, swarming and biofilm could be reduced up to 55-60%, 65-75% and 75-85% by ethanolic extracts of garlic, neem and moringa. Through these studies, we explored the potential of these compounds as antipathogenic drugs.